Gen 5 454 carb conversion

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gen 5 454 carb conversion

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Remove All Selections. Chevy big block Gen V. Search Within Results. Narrow Your Results. I am in the United States.Peanut port WOW! Aug 29, Messages: 4, Likes Received: Heres one for you,back in the day my shop partner decided to help his father throw together a 69 Chevelle just for fun.

Chevrolet Big Block Engine Generations - On the Mark

They stabbed a little cam,old weiand dual plane intake,some headers and a carb onto a truck big block. The car had a glide in it,I donated a stall convertor I had sitting around. They had a 4. Thru full street exhaust,with little 14" rims and street tires at it ran We went to look at an 80 Malibu that was for sale in the heart of the Newark NJ ghetto back about 18 years ago. It had a 12 bolt with all jusk underneath,a bigblock with smashed to fit chevelle headers,a stock iron intake and Q jet with 2 plates under it,and was a known 10 second car in full street trim.

Idled like a boat,and ran 10's. Had about hp of nitrous on it. Big blocks rock. Heres a good combo for you. Back in the day I borrowed a friend's bigblock friend mentioned in my first post. It was a 9. It had smashed to fit small tube headers and a stall convertor behind it. We dropped it in my Firebird with the 2 speed and 5.

At it ran I think with some 4. Messages: 1, Likes Received: 0. What I am seeing from all the budget builds is that if you had a little more compresion and a little more cam in your plain peanut port head big block you would be making about hp and close to ftlbs of torque.Welcome to Club Hot Rod!

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Parts, overview, and the TEST MULE- James L29 Vortec 454 build Ep2

When you removed the EGR valve, did you clean the surface and ensure it was flat before installing the delete gasket and block off plate? Thank you all for the compliments. Apply your base color and let it dry completely. Turn on the acetylene to a very low flame Hey gents, So I'm helping my buddy work on this 37 Chevy pickup fender.

We've been learning lots about metal bumping, etc but there's one spot we can't get to respond. There was previous damage in I believe it runs to a ported vacuum switch which I did end up capping off. Did you plug the vacuum hose that went to the EGR? If not, you will have a vacuum leak that may be the culprit. Remember Me? Thread: 7. Results 1 to 6 of 6. I've been trying to find info on how to perk it up some.

I'm thinking: headers, dual exhaust, hi-output coil and a spacer between the throttle body and manifold. Currently, the engine is bone stock and runs good.

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Does anyone have experience with this ? Can you make recommendations? What kind of increase am I looking at with the above mods? Any help is much appreciated. Thanks, MoralDK. Register now for free! Welcome to CHR! Pat McCarthy is our resident BB expert - none finer - if it's been done, he's done it more often and better than anyone.

He will be able to give some good advice about most anything aftermarket or internal for big blocks. With my "limited" experience I'd recommend that you first make sure that any modifications you make will stand up to emissions laws.

Washington State requires emissions testing every 2 years and I believe Spokane County is included. The intake in particular will give a noticeable bump as it removes the stock air filter housing and you're no longer sucking air through a tiny little funnel. The throttle body and MAF sensor are two more components that may have a few horsepower hiding in each of them but make sure the throttle body is compatible with your cruise control.

Key for the MAF is overall air flow. So - with "bolt-on" components that won't violate your emissions laws you can get HP or so.However, they can be improved.

I recommend upgrading to the Vortec lph fuel pump which can support up to hp and plugs right into a factory TBI sending unit. Stock TBI makes hp and tq so stock fuel pump is maxed out right off and a typical will run better with a fuel pump upgrade even with stock chip.

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Always a big complaint with TBI trucks. Nothing is going to help that fuel mileage more than overdrive. As with the other TBI and most vehicles in this era, the exhaust is terrible restrictive.

So I recommend upgrading to dual 2. As for headers, you could if you want but at that power level your just going to give yourself headaches with exhaust leaks and burnt plug wires.

gen 5 454 carb conversion

So I am not going to recommend that. Now when you do open up that exhaust with true duals, you need to look into doing a 3 wire heated o2 sensor conversion to keep the o2 sensor good and hot so that it reads accurately and gives you better fuel mileage.

1995 CHEVROLET 7.4L/454 Chevy big block Gen V Intake Manifolds, Carbureted

People either skip this entirely, or skimp on the parts used or go crazy. TBI is a simple injection system. No MSD or other ignition boxes. That just makes diagnosis harder and have yet to see any gains on this system from adding one.

gen 5 454 carb conversion

First, if the distributor is out for cam swap or engine replacement then change the pickup stator with a new AC Delco D pickup stator. I only use AC Delco electrics as most all others is poor quality chinese parts. AC Delco still chinese but have better handle on quality control. If your distributor has over k miles on it.

You just asking for a headache that neither of us need. So what to use. GM performance parts division now offers a performance replacement distributor. For coil, up to rpms stock coil just fine. If your going to rev her on up then I recommend a Pertronix D Good coil for the money. Too many issues with the MSD and Accel coils to recommend them lately. For plugs AC Delco again seems to give me the best plug coloring.

Here is the parts list needed to accomplish that.Though it is possible to replace the injectors and throttle body, and to reprogram the computer, many find it simpler to "down-grade" to a carburetor setup. The most basic things you'll need to convert from TBI to a carburetor is a carb and a matching manifold. Simply remove the old manifold, drop the new one in its place and install the carburetor. One ancilliary you'll need to replace is the distributor.

The stock distributor is computer controlled, which is a bad thing considering the fact that you'll be removing the computer. If you're using a roller-lifter camshaft, then you're going to have to swap out the distributor's drive gear for a softer bronze unit, or risk damaging the cam gear.

Keep in mind that the HEI distributor is likely wider and taller than your stock unit, which will be a problem if your engine is close to the fire-wall.

The TBI system uses fuel pressures far in excess of what a carb requires, so you'll need to install an adjustable fuel pressure regulator into the existing line. The stock fuel system does use a return line, so the fuel pressure regulator will need provisions for this. Of course, the simpler solution is to simply replace the fuel pump, which will serve the dual purposes of simplifying installation and replacing the worn fuel pump with a new unit.

Though the swap is fairly straightforward, be forewarned that vehicles with the computer controlled 4LE automatic overdrive transmission will need additional work. The transmission is a bolt-in replacement for the 4L60E, but your going to need a stock replacement or adjustable aftermarket throttle kick-down cable. Some THs differ in length enough from the 4L60E that you may need to change the driveshaft length while you're installing the new THspecific yoke.

This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

To submit your questions or ideas, or to simply learn more about It Still Runs, contact us. Fuel System The TBI system uses fuel pressures far in excess of what a carb requires, so you'll need to install an adjustable fuel pressure regulator into the existing line.

Transmission Troubles Though the swap is fairly straightforward, be forewarned that vehicles with the computer controlled 4LE automatic overdrive transmission will need additional work.

About the Author This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.The Mark IV uses a two-piece seal top ; the switch to a one-piece seal in the GEN V big-block above required major changes in the rear main-bearing cap, crankshaft, oil pump, oil pan, and flywheel.

There are big differences in the size, shape, and location of the core holes in the big-block's deck surfaces.

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There may not be enough material on the deck to seal the early-model heads properly. Mark IV head gaskets have two openings at the front; a GEN V-VI gasket has only one opening to force coolant to flow rearward through the block and cylinder heads.

Mark IV engines use conventional threaded studs that allow changes in valve lash.

RECOMMENDED 454

All Mark IV blocks have a mounting boss for a mechanical fuel pump. The cast cover uses a reliable O-ring seal. This smaller sump provides more clearance for chassis crossmembers in early-model passenger cars. The oil-filter pad on a Mark IV block left is recessed from the oil-pan rail. Motors, like music, were much simpler in the '60s. When Chevrolet unveiled the big-block V-8 back inthe only decision in a record store was whether to buy the single or the entire album on vinyl.

Since then, we've witnessed the advent of four-track, eight-track, quad-sound, laser discs, and cassettes; today we've got CDs, DVDs, and digital audio files on the Internet. Like rock 'n' roll, the big-block Chevy V-8 has been transformed by evolution and revolution.

For more than 25 years, Chevy's big-block V-8 was a rock of stability. It didn't take months of research to become a Rat-motor expert because virtually everything was interchangeable. As long as you could remember the difference between heavy-duty truck and passenger-car blocks, and recall which crankshafts needed external counterweights, you could pass as an authority.

In those innocent days, confirmed Chevy fanatics could make fun of the Ford guys who had to deal with incomprehensible parts combinations. Ford parts seemed to change almost daily, and a block built in August sometimes couldn't be used with a crank forged in October of the same year.

gen 5 454 carb conversion

A degree in big-block genealogy is now a prerequisite before mixing and matching heads, blocks, camshafts, and cranks. Can we turn a pile of parts into a whole car in one week? A collection of Camaro products any gearhead would like to own. Treat your classic Corvette to a professional dyno shop super tune. We take you through the short but careful process of installing an aftermarket passenger sideview mirror on a C3 Corvette. Corvette Chief Engineer shared insights about the C8 Development.

Chevy High-Performance. How To. View Full Image. Connect With Us. Get Latest News and Articles. Newsletter Sign Up. Related Articles. Get a professional dyno shop super tune Treat your classic Corvette to a professional dyno shop super tune.

C3 Corvette Side Mirror Install We take you through the short but careful process of installing an aftermarket passenger sideview mirror on a C3 Corvette.The Jalopy Journal. Terms of Service. Privacy Policy. Log in or Sign up. Atomic Industries www. Register now to get rid of these ads! The H. How do I convert to carb from TBI? I have a and would like to get rid of the brain to have a stand alone engine and trans. What grouping or type of intake should I be looking for?

Air-Gap made for small ports DeucesOct 7, Gearhead GraphicsOct 7, Easier yet. Im pretty sure the big blocks used the same Q-jet intake manifold they used for years and just added an adaptor plate for the throttle body to bolt to. Take that off, put on a quadrajet, a mecanical fuel pump, and an HEI dizy and your set. Gus68Oct 7, I looked for a manifold,Man! Don't know what the right one is. It also say not for a "tall block" ,I don't think my is a tall block. How can I tell? Your choice of manifold depends on what the vehicle will be used for.

Reliable daily driver? Need more details on what it is and what type of driving you do with it.

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GrumblerOct 7, Glad to see TBI is cool on a and considered traditional Can't believe there are a million places to ask this question and it gets posted on the best traditional site on the net. Hmmmm, SPark. LM14Oct 7,


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