496bbc twin turbo
05-02-2010, 07:12 PM
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Car: 91 and 87 camaro
Engine: 91 360ci and 87 350ci
Transmission: lt1 t56 ,wc t5
Axle/Gears: 3.23 2.42
496bbc twin turbo
those anyone has an idea of what kinda horse power can i get out of 496bbc with like 15 to 20 psi of boost??
05-14-2010, 10:39 PM
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Car: 92 RS, 89 Formula, 84 Iroc
Engine: Carb 350, TPI 305, TBD
Transmission: T-5, 700r4, TBD
Axle/Gears: 3.42 Posi, 3.08 Posi, Moser 3.73
Re: 496bbc twin turbo
Well its not too hard to get 1 hp per cubic inch so you start with 450 hp or so. If I remember right 14 psi will "double" your engine size so that would be in the 900 hp range. So I'd think a conservative number would be in the 750-800 range. This is just a guesstimate.
Last edited by windowrattler; 05-14-2010 at 10:40 PM. Reason: extra word
05-14-2010, 10:50 PM
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Car: 1991 Camaro Z28
Engine: 357, Canfield heads, solid roller,
Transmission: Upgraded 03 Cobra T56
Axle/Gears: 9" 3.50 gears and Detroit Locker
Re: 496bbc twin turbo
Personally I would be pissed if I spent over 10 grand building a TT 496 and had any less than 800 HP. I dont even think that 1000 is that drastic. Its going to take a serious driveline to handle that though. Hope you got deep pockets 
05-14-2010, 11:48 PM
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Re: 496bbc twin turbo
Depends on how radical the 496 motor is. If it has great heads and a decent sized cam, on 15 psi it could make WELL over 1000 hp. More streetable mild setup on 15 psi 800-1000 hp.
My 401sbc isnt that radical and on 15psi is probably 850hp based on track performance and mustang dyno numbers thru loose converter. More aggressive build would approach 1000hp on motor which is in the 800-850whp range I assume based on losses.
I dont know the block strength of a typical factory block so that may be an issue.
My 401sbc isnt that radical and on 15psi is probably 850hp based on track performance and mustang dyno numbers thru loose converter. More aggressive build would approach 1000hp on motor which is in the 800-850whp range I assume based on losses.
I dont know the block strength of a typical factory block so that may be an issue.
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