Werewolf SS

iTrader: (3)

Hey Guys I'm getting an 86 Suburban with a Mark IV 454 BBC Carb'd in it.
Just have a few questions.

1.) Will the stock fuel pump in the Camaro (TBI 305 in Camaro) be enough for the carb or do I need to put it at a certain psi and if so what is it?

2.) Since it's being mounted to the stock 700r4 the electronic speed sensor will still work right? The Camaro is a a 1990 RS 305.

3.) I I use the suburban exhaust manifolds can I mount the stock exhaust to it?

4.) Will it fit under the hood as is or do I need a different Intake Manifold?

5.) What Radiator should I go with to keep it cool?

Thanks guys!

five7kid

iTrader: (14)

1) The problem with the TBI pump isn't pressure, it's volume. It would be fine for normal driving, but probably won't keep up under WOT. Figure on upgrading it. And use a return-style regulator to keep pressure between 4-7 psi.

2) Shouldn't be a problem.

3) You might be able to, but it would be a bad idea. The only thing worse than TBI exhaust is V6 exhaust.

4) You'll need a cowl hood if you want to use any kind of a decent intake.

5) The stock radiator in good condition should keep it cool. Might want to go to dual fans, though.

Werewolf SS

iTrader: (3)

Thanks for the response.
So upgrade fuel pump which unit would you recommend?
Also will the block with intake as is now fit without getting a cowl hood?
The plan is down the road to build this engine but for now I just want to get it in the car with as little work as possible for now.

Thanks for the help guys!

five7kid

iTrader: (14)

The Walbro 255 seems to be a popular choice.

The big block is too high for a stock hood, even with a stock intake. You'll need a cowl hood.

Werewolf SS

iTrader: (3)

I'm a fan of the Hawks SS Hood would this be suitable are will I need to go to a cowl hood and if so how big of a hood 2 inch, 4 inch? I want to be as low as possible (not a fan of big cowl hoods).

Thanks!

10secondhopeful

I don't think the SS hood would be enough to clear the intake manifold. a 3in cowl should do it and they don't look half bad

Werewolf SS

iTrader: (3)

I'm reading about the Hot Rod guys who made a stock hood fit with a low profile Intake manifold but it doesn't say which one it was. Any ideas?
http://koolenterprises.com/diff_sol/bbc.html

[A low profile intake manifold and air cleaner
are neccessary to maintain adequate hood clearance.]

five7kid

iTrader: (14)

The real question is what you plan to use the car for. If any kind of performance, build the engine and figure out the hood afterward.

What they used was probably a Torker II. Single plane, high RPM, not very good powerband (2500-6500), and not nearly as good power as say a Performer RPM.

Werewolf SS

iTrader: (3)

Thanks!

The plan is to down the road build it for the strip with occasional road outings.
For now though the plan is to get the engine in the car and drive it as is while the funds to do the build are done.

At the moment it looks like bore and stroke the 454 to a 496.
And do a twin turbo setup. Looking to make 700 to 800 horse and similar torque.
Or just cam the 454 forged internals, raise compressions to 9.5 and twin turbo and shoot for 600 to 700 horse.
Not sure yet.

jupetto

with a 454 mated with a 700R4 can a guy use the stock driveshaft and torq arm or will those have to be custom lengths?? I assume the tranny will be in the same spot as it would be if it were mated to a sbc but just wanted to make sure. if I remember right the 454 sits further forward in the engine bay but not further back putting the tranny and everything after it in its stock location.

Werewolf SS

iTrader: (3)

Your correct the BBC mounts exactly with the SBC points and the engine goes forward. So the tranny, Torque Arm, driveshaft, and rear will all mount up stock.

ModPog84z28

the problem with building an engine after you install it due to funding issues is, crap happens. my question for you is: does the 305 run right now? if the 305 runs, i would stick with it for the moment and build the 454 on the side, then you dont have to sacrifice ne down time on the car and you can save money for the 454. if it doesnt run, why doesnt it? if its completely toast, then your right, drop the 454 in and wait to get your parts, then plan on some down time too build the engine. alot of it is about down time, and do you have another vehicle. if you do, build it your way and get the engine in there. if not, keep it as is if it runs, and build the motor on the side.

i also see lots of chassis reinforcements for a 454 swap, not too mention beefing up the 700r4 pile to handle the BB. i guess just make sure you dont destroy everything with that powerful engine, cuz its a considerable step-up from a 220 horse 305 tbi.

good luck with your swap!

Werewolf SS

iTrader: (3)

The funny thing is horse wise the 454 is just going from 220 (tbi) to 250 (454) but its the torque that's amazing....385. And overall is just a better block to build performance wise.

The engine in the Camaro right now (305) has a blown rod but this is a project car so if it does or doesn't move is not a big issue. The car will slowly and as funds permit me built and its something we would want to cruise in while the build is going on.
The build is going to take 2 to 3 years right now as planned.

five7kid

iTrader: (14)

The f-body 305 TBI engine is rated at 170 HP net.

SSC

Ok the engine will drop right in with the stock intake it fits under a firebird PB hood small cowl hood would be a great idea if you wanted good a air cleaner. Anything other then the stock 80lb intake and you need a cowl hood. The truck exh manifolds fit they exit different from a sb truck engine. The fuel system would benifit from a good rotarty fuel pump as 57 mentioned a return system would be ideal. Big blocks are fun and run soo smooth just make sure when you get that engine all the brackets come with it. BBC brackets are hard to chase down these days at an affordable price it took me 3 weeks to find a power steering assembly that looked like it was burried under ground for 1000 years and it cost $100.