how much power will I gain?
Thread Starter
TECH Resident
Joined: Aug 2008
Posts: 910
Likes: 0
From: Dubai
how much power will I gain? Hope to get a few more answers this time.
Setup is a 427 + TVS2300 @ 8psi.
Current parts:
- 87mm Throttle body
- 1 3/4 primaries, 3" collectors
- high-flow cats 2.5 to 3" y-pipe
New setup:
- 90mm Ported/polished Z06 throttle body
- 1 7/8 primaries, 3" collectors
- 3" true duals
With a re-tune, how much power should I expect? truck makes 720bhp the way it sits right now.
Setup is a 427 + TVS2300 @ 8psi.
Current parts:
- 87mm Throttle body
- 1 3/4 primaries, 3" collectors
- high-flow cats 2.5 to 3" y-pipe
New setup:
- 90mm Ported/polished Z06 throttle body
- 1 7/8 primaries, 3" collectors
- 3" true duals
With a re-tune, how much power should I expect? truck makes 720bhp the way it sits right now.
TECH Apprentice
Joined: May 2006
Posts: 311
Likes: 3
From: Omaha,Ne
It seems to me not alot, the improvement on the intake to the blower, is very small, and that is where most of the gains, are going to come from.
I have seen bigger throttlebodies, be a restriction on smaller blowers than you have. This example is also on a smaller engine.
Think of it this way, wouldn't a 90mm TB be borderline on a N/A 427, now add 50% more draw(8 lbs)
Turbo outlets could care less what the TB is(pressurized air), but Blower inlets are a different story.(rarefied air)
I have seen bigger throttlebodies, be a restriction on smaller blowers than you have. This example is also on a smaller engine.
Think of it this way, wouldn't a 90mm TB be borderline on a N/A 427, now add 50% more draw(8 lbs)
Turbo outlets could care less what the TB is(pressurized air), but Blower inlets are a different story.(rarefied air)
Thread Starter
TECH Resident
Joined: Aug 2008
Posts: 910
Likes: 0
From: Dubai
so you're saying most of the gains are going to come from the throttle body swap?
I think the exhaust is going to be worth something too, 1 3/4 primaries on a boosted 427 doesnt sound right, neither does a single 3" y-pipe. Swapping to a free-er flowing exhaust should drop the boost and enable me to run more spark advance and make more power?
I think the exhaust is going to be worth something too, 1 3/4 primaries on a boosted 427 doesnt sound right, neither does a single 3" y-pipe. Swapping to a free-er flowing exhaust should drop the boost and enable me to run more spark advance and make more power?
