What are gt-40 power bands like?
Should be interesting to see what kind of numbers we put up
01-20-2008, 10:34 AM
#14
3rd Gear Member
Join Date: Dec 2006
Location: chicago
Posts: 875
RE: What are gt-40 power bands like?
ORIGINAL: WLingle92lx
With my old H/C/I set-up of GT40/Explorer intake, milled & mildly worked GT40P heads with a Ford "Z" Cam I was shifting at 6800 rpm. You should see around 6300-6500 rpm with that set-up, not much more because of the rpm range of the cam. A set of slicks will put you well into the 12's though. I used to go 12.5's with my 92lx all day long on 26x9" slicks and 288rwhp.
With my old H/C/I set-up of GT40/Explorer intake, milled & mildly worked GT40P heads with a Ford "Z" Cam I was shifting at 6800 rpm. You should see around 6300-6500 rpm with that set-up, not much more because of the rpm range of the cam. A set of slicks will put you well into the 12's though. I used to go 12.5's with my 92lx all day long on 26x9" slicks and 288rwhp.
01-20-2008, 10:50 AM
#15
4th Gear Member
Join Date: Feb 2006
Location: Md
Posts: 1,119
RE: What are gt-40 power bands like?
ORIGINAL: Stella94GT
this is probably a dumb question but where you putting 288 to to flywheel or to the ground?
ORIGINAL: WLingle92lx
With my old H/C/I set-up of GT40/Explorer intake, milled & mildly worked GT40P heads with a Ford "Z" Cam I was shifting at 6800 rpm. You should see around 6300-6500 rpm with that set-up, not much more because of the rpm range of the cam. A set of slicks will put you well into the 12's though. I used to go 12.5's with my 92lx all day long on 26x9" slicks and 288rwhp.
With my old H/C/I set-up of GT40/Explorer intake, milled & mildly worked GT40P heads with a Ford "Z" Cam I was shifting at 6800 rpm. You should see around 6300-6500 rpm with that set-up, not much more because of the rpm range of the cam. A set of slicks will put you well into the 12's though. I used to go 12.5's with my 92lx all day long on 26x9" slicks and 288rwhp.
01-20-2008, 12:14 PM
#16
Banned
Join Date: Dec 2005
Location: Lil' Rhody
Posts: 22,376
RE: What are gt-40 power bands like?
ORIGINAL: flyinghigh2k8
What do you guys think I will be shifting at?
What do you guys think I will be shifting at?
waiting any longer will slow you down
01-20-2008, 12:29 PM
#17
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Join Date: Feb 2006
Location:
Posts: 604
RE: What are gt-40 power bands like?
If you use a pretty steep gear (somewhere around 4.10-4.30) your car will still pull, even after your peak rpm. My car makes peak power at 6900rpm but it still pulls hard right before I shift at 7500.
If youv'e even seen the power curves of an NMRA pure street car they peak at around 7000rpm, but they shift there cars at close to 9000. This has to do with the small 26" tire and 4.56-4.88 gears.
If youv'e even seen the power curves of an NMRA pure street car they peak at around 7000rpm, but they shift there cars at close to 9000. This has to do with the small 26" tire and 4.56-4.88 gears.
01-20-2008, 01:44 PM
#18
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Join Date: Mar 2007
Location: Buffalo, NY
Posts: 1,541
RE: What are gt-40 power bands like?
Flyinghigh: I'm build the same exact set up as you this winter except I am going with the Trickflow stage one cam and I already have my Tubular gt-40 intake. I will be curious to see the power differences we put down with just the difference in cam.[/align][/align]not to hack the thread... but might i see a 12.9 on motor with tfs stg 1 cam, ported gt40 heads, tubular gt40 intake, 70mm tb, 75 mm maf, 24# injectors, 3.73 gears, and some bfg d/r?[/align]what about with my 100 shot?[/align][/align]Adder: have not seen you in awhile, nice to see you back[/align]
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