377 vs 383 vs 400
08-15-2003, 05:05 PM
#1
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Car: 86 T/A
Engine: 383
Transmission: 700R4
Axle/Gears: 3.27 9 bolt
377 vs 383 vs 400
Im currently interested in swapping out my 305 for something bigger and better. My question is which setup can i get more hp and torque out of.
Utalizing a smaller bore with bigger stroke like with the 383
or
Take a 400 block with 3.48 stroke, this i hear will rev up alot higher.
or just go with the 400 block and a 3.75 stroke.
What am i going to be able to get the most power out of? Also i was wondering if my TPI setup off of my 305 would bolt right up to a 400?
Utalizing a smaller bore with bigger stroke like with the 383
or
Take a 400 block with 3.48 stroke, this i hear will rev up alot higher.
or just go with the 400 block and a 3.75 stroke.
What am i going to be able to get the most power out of? Also i was wondering if my TPI setup off of my 305 would bolt right up to a 400?
08-15-2003, 06:17 PM
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Car: 1991 Formula
Engine: 350 firebreathing inches of Small Block Chevrolet
Transmission: A 700R4 that has trouble handling the formentioned 350.
Well I have never heard one good thing about a 377, aviod it. But if you want good sized power #'s (any thing over 300HP). I would suggest a Stelth Ram on top of a 400 bored to 406. Get some nice heads and headers and you will have a great engine set-up.
Good Luck, Later, Garrett
Good Luck, Later, Garrett
08-15-2003, 10:05 PM
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08-18-2003, 11:58 PM
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Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
No replacement for displacement... and (pick a number)hp in a 400 will be more durable and reliable than (same number)hp in a smaller engine.
08-20-2003, 07:42 PM
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Car: '95 Trans- Am
Engine: 5.7, Baby
Transmission: Auto
Of course it will. Don't know why you'd want to though. That's no where near the airflow you will need for a powerful 400. However It would work pretty good on a 383 seeing as how all of its power is downlow. There is nothing wrong with a 377 however because they like power at the top end there not that good on the street.
Steve
Steve
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08-21-2003, 06:08 PM
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Car: 1986 Z28
Engine: 355
Transmission: th400
the real question is.. how fast do you want to go.
what kind of use will the car see.
what type of gas do you want to run.
What is your budget.
what kind of use will the car see.
what type of gas do you want to run.
What is your budget.
08-23-2003, 01:08 PM
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Car: 86 T/A
Engine: 383
Transmission: 700R4
Axle/Gears: 3.27 9 bolt
Well i would like to keep it street legal, but yet i want the sucker to scream. All i run for gas anyways is 91 octane. I dont want to be having to put in octane booster in every tank, or have to stop at the track every day for race gas.
08-23-2003, 09:29 PM
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Car: Guess
Engine: Crazy 8
Transmission: So close to being a manual I can taste it
Like said No Replacement for Displacement. If you want a screamer, find yourself a good 400 block, get a light weight billet steel crank, titanium rods, lightweight pistons. Titanium valvetrain, solid roller cam. Huge heads and equally huge manifold, huge flowing that is. Now you have a car engine with the RPM band of a crotch rocket!!!
Seriously though a 383 with a Mini Ram or Stealth Ram and a well choosen valvetrain will pull great on the street. The only 377s I ever heard much about were on race cars. Mostly small, lightweight cars. They didn't need the gobs of torque to get moving, they wanted high RPM charge. I say stay away from it for a heavier car, especially if it is going to see much street duty.
Seriously though a 383 with a Mini Ram or Stealth Ram and a well choosen valvetrain will pull great on the street. The only 377s I ever heard much about were on race cars. Mostly small, lightweight cars. They didn't need the gobs of torque to get moving, they wanted high RPM charge. I say stay away from it for a heavier car, especially if it is going to see much street duty.
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