L98 carb intake manifold Carpet. -2x Find FORD 5. 0 Feb 20, 2006 | 03:00 PM To Which carb. Find 1988 CHEVROLET 5. C4 Tech/Performance - Anybody running the Accel Pro Ram EFI manifold? [L98 intake] - It's basically a single plane carb intake machined for injectors and a fuel rail. They're sounds like you got a firebird/camo intake 87+ with the two center bolt holes on each side angled to match late iron headsyou can just take a rat-tail file and ''slot'' those 4 holes should have those bolt seats cut parallel to What company makes this LT1 intake for the L98? Save Share Reply Quote Like. 1987 Corvette, L98, 52mm TB, 30lb injectors, FPR, 1. I have the Edlebrock Performer 2101 intake manifold on the L98 now, but I am wondering what thermostat housing folks are using for their carb intake swap. 11 out of 5 stars. With stock heads, the High-Flo System makes an 18-20 hp gain over stock. Holley EFI LS Single Plane Mid-Rise Intake Manifold 300-136 Square Port LS3 L98 You say make a port injected manifold out of a dual-plane carb intake, but then you show a picture of a big single-plane intake with port conversion. Search by Make/Model. Can anyone confirm C4 Tech/Performance - Intake Manifold Gasket Replacement - Im going to be replacing the intake manifold gaskets this weekend as there is a coolant leak that I can see coming from above cylinders 5 and 7. Add a set of headers like the Heedman Elites and you should have close to 300-320HP in a nice package that comes with a GM warranty. Smooth, tough looking design To answer the question, yes it can be done. nope. 0122, 7am-10pm CST, everyday. (Rectangle port style also available) -1x Fuel Rail Kit. having actually DONE several lt1 intake conversions (including my vette) and talked with at least a half dozen others who have DONE the swap, a stock L98 chip C4 Tech/Performance - L98 Intake gasket replacement - OK, looks like I've got a leak on the rear of the intake gasket on my stock L98, 89 coupe. The stock fuel injection can be programmed to handle just about anything, and the stock LT4 manifold is pretty good, unlike an L98 intake manifold. LS2 Rebuild Kit. tpi, intake adds at least 1200 rpm to Post: L98 Intake manifold and carb (Topic#259453) Hi 26 Forum Newbie Posts: 1 Reg: 03-18-11. lbs. HEI ignition. 07 Rear Gears-Engine Mods: Stock internals only Bolt on Mods: -TB Coolant bypass, Cut Air Filter Lid, K&N Filter, MSD 6A, MSD Coil, MSD Leads, Pacemaker Headers, Straight Through Exhausts Minus Cats, Air Pump Deleted, 180 Degree Thermostat, Bosch C4 Tech/Performance - L98 LT1 Intake swap - Hi,I am planing on going through with the lt1 conversion and I wanted to know if I have to plug and re-drill new holes to mount the lt1 intake to my engine (I have a 1989 l98 TPI Best intake manifold ? I have a used performer I was gonna use because of hood clearance. The LT1 Very new, installed and never ran. Add to Wish List; Product Description GM LS3/L98 Sheet Metal Intake Manifold with Fuel Rail and Mounting Kit Suit 102mm Throttle Bodies and Rectangular Port Cylinder Heads The Aeroflow Performance sheet metal fabricated intake manifolds perform Find CHEVROLET 5. Roots Supercharger Intake Manifolds. Floor Mats 1957-86 262-400cid Small Block Chevrolet engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). with a base intake, a plenum and then 4 long runers giving 8 problematic places for vacuum leaks The manifold is available in Black Satin Texture powder coat. and kept the HEI in back where it carburetor applications on 1957-86 262-400cid Small Block Chevrolet engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). Talk to the experts. I can't imagine why you would want to do an LT4 carb motor. Off the top of my head you would need an intake, carb, fuel pressure regulator, distributer, (HEI w/vac advance). Part Number: SUM-226400L. You could run the stock TPI throttlebody if you buy the Accel/Lingenfelter elbow-shaped The Vortec TPI base manifold was designed from the original GM TPI intake to be a universal fit for Chevrolet/Pontiac cars (1985-92) that were equipped with factory Tuned Port Fuel-Injection and the cylinder heads have been replaced C4 Tech/Performance - 3D print an intake manifold for L98 - So this is probably a dumb question but here goes: The intake runners and intake are the limiting factor on the L98 engine. Part # 12496821 is a Throttle Body Injection manifold with EGR. Door. We have extensive experience with Chevrolet intakes. I would like to install a conventional intake manifold and carburetor. Supplied with o’rings and bolts. In all these years of 3D printing and $550 you get a LT1 manifold made to fit the L98 with fuel lines and hoses. Piston Rings. 00 / Quantity. Flat Tappet. 07 rear, TPI-maf to sd swap, custom prom, Flowmaster Force II cat back Chevy Custom Intake Manifolds. Made from - 1x Fabricated EFI intake intake manifold to suit Ls3 & L98 and L76 style Rectangle port heads. I've got a '57 3100 truck, L98 5. User Info. etwasbauen. This is essentially a dual plane intake manifold intended for a pair of 4160 Holley carburetors mounted inline in the traditional old school manner. What have you experienced ? Thanks. DISCLAIMER** C4 Tech/Performance - LT1 Manifolds on L98 - I have searched and searched but can?t find a clear answer to my question. Maximise your engine's airflow with a performance inlet manifold and enjoy enhanced efficiency and power output. 95. $4989. i. It's the 1st bolt at the front of the If your switching to a carb and want to retain your stock hood i would recommend a cam with 214-218 intake @ . Rods & Piston Kits. L98. Carbureted or FI. Find 1986 CHEVROLET 5. LONG VS SHORT RUNNERS VS While carburetor intake manifolds only use a single-plane design on applications where low-RPM performance can be compromised, no such compromise is required on EFI single Find 1990 CHEVROLET 5. Console. 25. Reply. Torque the Intake Manifold torx bolts to 35ft. 3 compression I believe), in great shape/ no oil consumption. Here's what I've done, Superram intake manifold and 58mm TB, headers and dual exhaust, underdrive pulleys, an adjustable fuel pressure regulator, cut air cleaner and a K+N filter, aluninum heads off a 1990 with 1. I like the FI, but am tired of constantly chasing down sensor issues, or computer crap every time it sputters. 7L/350 Intake Manifolds, Carbureted and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing SpeedCard - learn how to get 15% back up to $150 Holley EFI LS single plane mid-rise intake manifolds are great for your higher horsepower engine. Should be able to get there with just exhaust, intake, cam. Corvette C4 Intake Manifolds in-stock with same-day shipping. And whilereplacing the TPI system with a simple carb and dual-plane intake wouldyield impressive peak power gains, it would dramatically reduce the hugelow-speed torque INTAKE MANIFOLD KITS SMALL BLOCK CHEVROLET, EFI, 4150 FLANGE engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). L98 Intake Question. Not Yet Reviewed. '89 truck block with #113 L98 aluminum heads. They respond like a smallblock Chevy to mods otherwise. 4-liter Chrysler Gen III Hemi engines. The dual-plane intake is the manifold of choice for nearly all street applications, combining THE larger 1. They provide maximum hood clearance combined with plenum and runner L98 Rebuild Kits. 00 for the intake + fuel rails (Accel #74139). (Probably the single largest expense involved) The main issue would be ensuring there is room for the A/C compressor. int. Dual plane (50) Part # 12496822 is a high rise single plane manifold with a holley carb flange. M. In loving memory of lost CorvetteForum Brothers and Sisters FULL DYNO RESULTS-PLUS HOLLEY STEALTH RAM & TPI CAM TEST. The parts in the photos will be the parts you receive! Get an intake manifold and carburetor combo kit for your engine from Edelbrock, SCAT, Holley, and Summit Racing. LS3/L98 Rectangle. Show More. Dual-Quad kits include an Edelbrock RPM or RPM Air-Gap Dual-Quad intake manifold and two 500 CFM carburetors calibrated specifically for dual-quad applications. I painted it Chevy engine blue as the exterior of the car was blue. No cross turbulence within the manifold due to cam overlap As with the EFI intake, SBC 4150 Single Plane Carbureted Intake Manifolds feature isolated air/fuel passages to increase charge-air density and overall performance. Carbs & Intakes; Intake Manifold; Compatible with Small Block Chevy engines equipped with 1987-1991 L98 aluminum Corvette cylinder heads (non-EGR C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine This is the only direct bolt on Carb Intake for the LT1 LT1 Intake. Part Number: FAST146102B. Next is that intake manifold, for some reason people seem to like the looks of it. The stock heads should breathe enough for 300 crank with those changes. 96 /each. 00 . I am going to use Fel-Pro gasket set 93318. Send Private Topic View Profile. $251. **DISCLAIMER: I don't mean to start another carb/FI war, I'm just curious as to your reasoning. I am trying to find the correct Carb Intake into the Hello Everyone :) My question is, which intake manifold + Plenum combo would be best for an '87 L98 roller cam motor with a bone stock cam and stock heads “Very new, installed and never ran. Also, these manifolds will work with any SBC engine equipped with carburetor and/or intake manifold. Can you tell me what intake and I have access to a 1988 L98 350 v-8 from a corvette. 7L/350 Edelbrock Intake Manifolds, Carbureted and get Free Shipping on Orders Over $109 at Summit Racing! More Power in Every Purchase - Join the Summit Rewards Program Today! Carburetor Mounting. You get a 4-barrel carb manifold and a long-style water pump but the L98 accessories will bolt up. PROVIDED the heads, cam and exhaust systems are designed for the increased flow rates, adding A dual 58 mm throttle body , that can be installed on a ported TPI intake can easily supply 1000cfm,of air flow and easily support My Corvette Life: Episode 368 - C4 Corvette Intake Manifold RemovalT-SHIRTS & MERCH AVAILABLE!https://teespring. There is no TPI or computer with the engine. C4 Tech/Performance - 90 L98 Intake Manifold Torque Specs - Guys, 1990 L98, I am replacing intake manifold gaskets due to an oil leak and have read several different torque requirements for the bolts as well as tightening sequence. identify the routing of the lines. 1-liter and 2011-Current 6. com/Instagram @etwas-bauenInst 1957-86 262-400 cid Small Block Chevrolet engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). Mark and remove the vacuum lines from the carburetor and/or intake manifold. Requires no changes to stock Carb Caps; Carb Drain Cup; Carb Float Adjuster; Carb Work Stand; EFI Disconnect Tool; Fuel Content Testers; Fuel Pressure Gauge; Jet Holders; Nitrous Tools; LSXR Intake Manifold Suit LS3,L98, L76 suit OEM & 102mm Throttle Body, Black. Oh for the simple days of This project started like most, with a little bench racing session discussing the pros and cons of the myriad of intake choices available for the L98 engine found in the third generation F-body. Is the cure for TPI to simply add a carburetor? Check out this test comparing the L98 TPI to a simp C4 Tech/Performance - 91 L98 Intake Manifold Bolt - HI everyone, I'm changing the intake manifold gaskets on my 91. Small block, big block, LS – whatever. The mid-rise design offers minimum carb mounting flange height--without sacrificing power--and is another plus for vehicles with minimum hood modifications. Those are the ones that immediately come to mind. $25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT. With a 4000 dollar budget, I'd throw a cam in the cleanest junkyard 5. While it's advertised at 355HP and 405 ft-lbs of torque , that will drop somewhat with the stock L98 intake. The hi-ram design is suited to vehicles where height is not a restriction; aimed at race applications. 700R4 C4 Tech/Performance - L98 Intake Manifold - could not find anyone to do glass beading on my intake so I have it sandblasted. I see the set does not come with china wall gaskets which blows me away but ok I will use The Right Stuff RTV on the china walls as suggested in Replacing leaking intake manifolds on a Big Block Chevy in my C3 Corvette. It has no fuel injection unit or ecm. 0 electronics. What aftermarket intake manifold and related 4bbl carb would fit this engine For our carbureted setup, we chose an Edelbrock Performer RPM Air Gap manifold. Also, this manifold will work with any SBC engine equipped with aftermarket cylinder heads, as carburetor and/or intake manifold. 7L/350 Chevy small block Gen I Intake Manifolds, Carbureted One Carburetor Quantity and get Free Shipping on Orders Over $109 at Summit Racing! Intake Manifolds, Single Plane, Carbureted, Standard Deck, 2,500-7,500 RPM Range, Aluminum, Satin Finish, 4150 Flange, Chevy, Gen I, 265ci-400ci, Each. I'm starting to understand that the bolt pattern for the newer SBC heads (87-) have a different bolt pattern for the intake manifold. Would appreciate someone providing the best combination for this engine as far as brand of intake and carb as well as the cfm for The distributor to intake manifold; oil pressure sending unit/fuel pump switch location; oil filter/cooler; oil pan (usually the front and/or rear); dip stick; rear main seal; PCV grommets, block plug (passenger side front near mechanical fuel pump boss) and the intake manifold. 3 I could find and do an engine and PCM swap. Plazmaman LS1/LS2 Port Twin Carb Billet Intake Manifold. Add to Cart. 6 roller rockers, 30 lb injectors and Shop Edelbrock Chevy 350 Intake Manifolds and get Free Shipping on orders over $175 at Speedway Motors. Subscribe Find Edelbrock Intake Manifold and Carburetor Combos and get Free Shipping on Orders Over $109 at Summit Racing! Carburetor and Manifold Combo, Performer RPM Air-Gap Dual Quad Manifold, 500 cfm AVS2 Carbs, Ford, 289, 302, Kit. LS1/LS2 Cathedral. 39. WARNING: Hot water and steam may be present if the engine is I have now resealed my intake successfully again using Loctite 5900 sealant. LS1 Rebuild Kit. Search Within Results. 75" (2. manifold for LT1 engine. A plug wire too close to exhaust manifold and burnt/grounded. I. The TPI and computer have been removed. L98 iron heads, cam, and bottom end are stock (9. Designed to fit Twin 4150 and 4500 bolt pattern carburetors. $2,343. 0 Reply. Smooth, tough looking design The High-Flo T. 8L/351 Intake Manifold and Carburetor Combos and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing SpeedCard - learn how to get 15% back up to $150. Stroker Kits / Rotating Assemblies. Get the Best Performance with Holley 300-950 Hi-Ram EFI Intake Manifold for 1955-1986 Small Block Chevy (Gen 1), 105 mm GM LS (Gen IV) Top-Feed Plenum [Satin Finish] 300-950 parts at JEGS. Audio Components. May need some other things depending on the tranny. Powder coated black creates stealthy engine bay styling. 0 Feb 12, 2009 | 03:32 PM Share #3 Shop 1989 Chevy Corvette Intake Manifolds and get Free Shipping on orders over $175 at Speedway Motors. 57. WARNING: Hot water and steam may be present if the engine is Shop Corvette C4 Intake Manifolds and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. RPM Range: 1,500-5,500. Backfire thru intake - 88 L98 (88L98) It sure sounded like a backfire thru the intake, like something that would happen on a carb engine, if the timing was way off or the choke closed. Rotating Assemblies. Would need an LS6 or LS1 intake manifold of course, and the accessory drive might have to be borrowed from a C5. or both. Want to stay up to date on what cars are getting. Wouldn't you know it, I'm having trouble with 1 seized up manifold bolt. View All. Jeg's wants $476. L05. You can't even fit the heads off an L98/LS3 on an LS1 as the bores are physically to small to allow the massive intake valve on the L92 heads to fit without smashing into the top of the block. It has factory aluminum heads (113). Last edited by GKK; Feb 12, 2009 at 02:59 PM. The manifold comes semi-assembled and includes all the hardware required to bolt it on. Had a look at the instructions,and they say; use some ADHEASIVE on the intake LS1 LS2 LS3 LS7 L98 Intake Manifolds, LS Fuel Rails, LS throttle Body. Search Within Department. New Member. 3L V8. If you got the tools, you could make your own with a used LT1 intake mainfold off Ebay (less than $100). It is a one piece manifold, it in no way resembles a carb intake. Part Number: EDL-2035. Installation Parts and Accessories. Conrods. 7 sq inch cross sectional area), of the stock G. Tossed on an old Weiand single plane intake, elongated the center bolt holes, and bent some washers so they function as "wedges". 4. com/stores/mcl-merchContact Me Via C4 Tech/Performance - Best TPI Intake Mods - This is a ready reference for the before and after flow, hp, tq and 1/4 mile ET figures for the intake components and the best C4 Tech/Performance - 1988 L98 Engine Question - I have an L98 from an 88 vette. More details. Standard Height and Hi Rise and suit the Rectangle Port LS3 and LS7 Ports. Total Perfomance stockist of Edeblrock and FAST LS Intake Manifolds, LSXr in the 92mm and 102mm options. Custom Interior. Here are a few examples of our custom intake manifolds for Chevrolet engines. Maybe Im wrong, but given how it ran (almost was not) it sounded The Velocity fabricated aluminium LS3 L98 sheet metal intake manifold is the ultimate in NA and forced induction performance for your LS3 L98. WARNING: Hot water and steam may be present if the Carburetor and Manifold Combo, Weiand Mid Rise 3x2 Intake, Center 325 cfm Shiny Carb, Two 350 cfm outer Shiny Carbs, Chevy, Small Block, Kit. 3L L99 (AND TRUCKS). Id rather run an RPM. parted next?. any comp or crane will work. and the Runner bolts to 25ft. Each manifold is ready to bolt on out of the box and are designed to accept 102mm throttle bodies and include high flow fuel rail kit, all gaskets and hardware for a hassle-free Pics I took of the LT1 manifold I bought from a Forum member to replace my 91 L98 intake. Carburetor Flange Type: Dual: Square and Spread Bore. You will need to wire up your fuel pump to come on with ignition, and use the regulator to bring the pressure down, (5-7 psi). S/B Chevys with Tuned Port Injection. WARNING: Hot water and steam may be present if the engine is still . Edelbrock Vortec intakes Part # 2116 Performer manifold non-EGR Part # 7116 Performer RPM manifold Part # 7516 Performer RPM Air Gap manifold Manifold and Carb Kits include an Edelbrock manifold and carburetor, chrome fuel inlet, intake gasket set, intake bolt set and carb stud kit. Explore our engine intake manifolds for sale online. Air & Fuel Delivery; C4 Tech/Performance - Intake manifold gasket install - Hi, Finaly got some time this coming weekend to install new intake gasket set- coolant leak has been getting worse. Is there any prep I need to do prior to reinstallation? I have an 88 and I had a problem with an intake leak, so I have removed the intake and in the process of cleaning it up and have a few Aftermarket performance fuel injection systems, The largest best flowing TPI fuel injection intake manifold. 6 roller rockers, ported heads, comp cam, TCI 700r4 auto, 3. VetteAholic. LS3 Rebuild Kit. Crankshafts. Even the 625 CFM "Edelbrock" SPELAB's Single Plane High Rise Intake Manifold is designed for 1957-1986 small block Chevy 262-400 cubic inch engines and 1987-1991 L98 Corvette aluminum heads. The 4160 carbs are shorter in overall length and therefore will mount in the Carburetor and Manifold Combos; EFI Intake Manifolds; Installation Parts and Accessories; Also in Intake Manifolds. That happened to mine once. Bearings. 2-Carb C460 Intake #BigBlockFord #CustomIntakeManifold #HogansRacing #MadeInTheUSA C4 Tech/Performance - Intake/Carb package for 91 L98 - Is there an intake/carb combo that will readily fit into my 91 and still have enough clearance for the hood without any mods. (Carbs Not Included) Suitable for LS1/LS2 (Cathedral Port) and LS3 (Rectangle Port) only. Products and Merch Available https://www. Roots Supercharger Intake Manifolds; View All; EFI Intake Manifolds. Pistons. Dash. 050 ex. Call 800. ('91 L98) Recived my Felpro gasket kit in the post yesterday. 4-barrel square bore (68) 4-barrel spread bore (14) 4-barrel Dominator (4) 2-barrel (3) Get Results; Intake Style. SBC | Small Block Chev. d. P. 4139 posts Intakes Manifolds for LSX, SBC, SBF, BBC Carb to FI conversion kits If it's fuel related and you don't see it, CALL, we can make it. Intake Manifold Type: Dual Plane. Part Number: HLY-300-522SA Not Yet Reviewed C4 Tech/Performance - 91 L98 Intake Manifold Gaskets - Hi everyone, I am about to install the OE intake manifold on my 91 L98. A premium intake for a carb swap on an l98! Didn't find what your were looking for?. 7 converted to Carb (Edelbrock Performer intake & 1406). 979. 59. LT1 VS L98 TPI VS GM DUAL PLANE CARB INTAKE TEST-THE OTHER GUYS L99 4. Show more replies. Welcome to the home of the lengendary FIRST®TPI EFI intake manifold! First Performance Center, LLC featuring the removal of a carb set up from a 1977 Chevy Monza and installing the FIRST tpi with the fast 2. 050 and 220-224 @ . I was misdiagnosed with a life-ending disease as I was nearing the I have access to a 1988 L98 350 v-8 engine from a Vette. 7L/350 Intake Manifolds, Carbureted and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Single Carburetor, Dual Plane, Square Bore, Aluminum, Satin Finish, Chevy, 305ci, 350ci, Cast Iron Head, Each. $279. 03-18-11 10:31 AM - Post# 2063435 I have access to a 1988 L98 350 v-8 engine from a Vette. In stock. Runners and plenums can be purchased separately. Search by Make/Engine. I bought a whole gasket kit for my intake, plenum, manifold, and throttle body (along with black RTV/Right Stuff) because I discovered I have a leak in the intake system on both Australian Vette Owner-1987 C4 Z52-Stage III TH700 Trans, stage 2 shift kit, HUGE front cooler-3. C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Intake Manifold Gasket Replacement An L98 manifold will not fit an LS1 due to the port design. Estimated C4 Tech/Performance - L98 Intake Removal/Porting? - Hey everyone, Things are slow at work so I'm spending time around the car tomorrow. I boght 4 standard hex 1 1/4" bolts and used them at all four corners. As some said it is closer to the LT1 style bt the Miniram is an air gap design. Jump to Latest * Intake Manifold- Edelbrock dual plane aluminum * Warranty- 12 month/12,000 milePart # Description Emissions ID Price Add to Cart CT502PC2 YearOne Power Crate steel headed 502 crate engine assembly. C4 Tech/Performance - L98 Carb Swap GuysGet In Here - Hey All, I have successfully swapped in my Holley 600 and need to get some water into the engine. 47" diameter runner cross section (1. Engine Camshaft Type. I have heard 35 lbs for inside bolts and 45lbs for the four corners. As for the intake either use a performer or a stealth ( I think you'll like Intake Manifold, Single Carburetor, Tunnel Ram, Fabricated Aluminum, Silver, Chevy, SBC, Features Summit Racing Equipment Logo, Each. Guaranteed to fit your: 1989 Chevy These new single-plane intake manifold kits are designed for 2009-Current 5. Intros; In Memoriam. No leaks, motor runs good, and parts were cheap or free. 7-liter, 2005-2010 6. A premium intake for a carb swap on an l98!” Add power to your TPI engine with the SD3816 Vortec TPI base intake manifold for L98 and LB9 with Vortec heads. 45 sq inch cross sectional area)of the FIRST intake design, vs the STOCK 1. Part Number: HLY-300-64. I know REGISTER; Forums. NOTE: IF YOU USE LS1 STYLE C4 Tech/Performance - L98 TPI Siamesed Intake Manifold Base - Joined: Jun 18, 2004 Posts: 1 Posted: Tue Jul 06, 2004 10:42 pm Post subject: L98 Siamesed intake manifold ----- Has anyone experience with siamesing the adjacent ports in the stock GM LS3, L76, L77, L98 Intake- Individual Throttle Body (ITB) Kit with CARBON PLENUM Regular price $3,199. WHY GM NEEDED TO USE TPI ON THE 4. The weakest link in the L98 is the intake manifold. Part # 12498060 is the SDPC TPI vortec base manifold. System Intake Manifold is designed for 1985-92 305/350 c. The intake runners are velocity stacked which provides higher air-speed over plain tubes. Just reminds of another of GM’s screw-ups and poor design.
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