how much power will I gain?
10-23-2011, 07:12 PM
#1
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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.
10-23-2011, 08:04 PM
#2
TECH Apprentice
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)
10-24-2011, 09:31 AM
#3
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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?