Supercharger vs new crate engine
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Junior Member
Joined: Aug 2008
Posts: 14
Likes: 0
From: Western, MA
Car: '89 Firebird
Engine: 5.7L 350 TPI
Transmission: Auto :/
Supercharger vs new crate engine
I was thinking about getting a stage 2 supercharger for my 89 Firebird. It's a formula 350 with about 123k miles on it. My buddy suggested scrapping that idea in favor of a new crate engine. If cost is roughly the same (4-5 grand) which is going to be the better option? I think I'm leaning towards the new crate solely because it would be new.
Joined: Jun 2000
Posts: 5,364
Likes: 51
From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: Supercharger vs new crate engine
spend the 5 on an LS swap...
Senior Member
Joined: Jul 2011
Posts: 834
Likes: 0
From: FL
Engine: 355 Super Charged
Transmission: B&M Streetfighter
Axle/Gears: 4th gen 342
Re: Supercharger vs new crate engine
Don't base that 5 K soley on your engine if that is your budget, your tranny will need to hold up to that new power. Like Twin Turbo said a LS swap would be a great route,figure out your budget and spreat that money across the car, you want to go fast but the car will need to handle and stop also. Good luck and keep us posted on the build, love to see the new ideas come to life.
Joined: Jul 1999
Posts: 12,100
Likes: 127
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: Supercharger vs new crate engine
I was thinking about getting a stage 2 supercharger for my 89 Firebird. It's a formula 350 with about 123k miles on it. My buddy suggested scrapping that idea in favor of a new crate engine. If cost is roughly the same (4-5 grand) which is going to be the better option? I think I'm leaning towards the new crate solely because it would be new.
-- Joe
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Supercharger vs new crate engine
If the motor is in good shape try to find a used blower kit here or just buy new if you have to. Reallllly need to watch the tune but it will run good, faster than any crate motor you could get for 4-5 grand
Joined: Jul 2003
Posts: 10,538
Likes: 206
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: Supercharger vs new crate engine
Originally Posted by poizonpyo
I was thinking about getting a stage 2 supercharger for my 89 Firebird. It's a formula 350 with about 123k miles on it. My buddy suggested scrapping that idea in favor of a new crate engine. If cost is roughly the same (4-5 grand) which is going to be the better option? I think I'm leaning towards the new crate solely because it would be new...
Member
Joined: Apr 2006
Posts: 221
Likes: 1
From: Morrison IL
Car: 88 GTA, 74 T/A
Engine: 383 stroker (Procharged)
Transmission: TH400 w/brake (new 2013)
Axle/Gears: 12-Bolt S60 - 3.73 (new 2013)
Re: Supercharger vs new crate engine
I just put a procharger (D1SC) on my car this past winter, not sure what kind of supercharger you are looking at or how much boost you want to make, but having a strong base (motor) is key to the potential of what the supercharger can do, along with cam/heads and everything else.
What are your goals? certain amount of HP? Certain E.T.?
What are your goals? certain amount of HP? Certain E.T.?
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Re: Supercharger vs new crate engine
I just put a procharger (D1SC) on my car this past winter, not sure what kind of supercharger you are looking at or how much boost you want to make, but having a strong base (motor) is key to the potential of what the supercharger can do, along with cam/heads and everything else.
What are your goals? certain amount of HP? Certain E.T.?
What are your goals? certain amount of HP? Certain E.T.?
Member
Joined: Apr 2006
Posts: 221
Likes: 1
From: Morrison IL
Car: 88 GTA, 74 T/A
Engine: 383 stroker (Procharged)
Transmission: TH400 w/brake (new 2013)
Axle/Gears: 12-Bolt S60 - 3.73 (new 2013)
Re: Supercharger vs new crate engine
I started out with 4.25 pulley and just went down to a 3.70 pulley. No the motor wasn't stock (383 stroker), it ran 12.90's on motor before I put the supercharger on. Real quick, I have a scat forged crank, scat rods, j.e. pistions all in a 4 bolt main block with 1" billet steel stud caps. Dart pro 1 alum. heads. Victor jr intake w/ C&S blow through carb.
Just scaled the car last night, with a 1/2 tank of gas (6 gal.-I have aftermarket billet alum. tank) it was 3660 with me in it (I'm 200lbs).
Motor is @ 8 1/2 to 1 compression.
Just scaled the car last night, with a 1/2 tank of gas (6 gal.-I have aftermarket billet alum. tank) it was 3660 with me in it (I'm 200lbs).
Motor is @ 8 1/2 to 1 compression.
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