Author Topic: HP question  (Read 2026 times)

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Offline Shimy87

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HP question
« on: October 09 2014, 11:15:29 AM »
Just for curiosity, has anyone every gotten any dyno numbers for a stockish buick spraying alky? People always ask me at car shows and I really have no idea?
 
Thanks!
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline good2win22

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Re: HP question
« Reply #1 on: October 09 2014, 11:26:22 AM »
I've run those calculators at wallaceracing. com and there are an assload of ways to calculate it, but using time, speed and weight of the car, my stuff came up just short of 390 hp.  Never been on a dyno
Jason

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Offline Steve Wood

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Re: HP question
« Reply #2 on: October 09 2014, 11:56:41 AM »
There are a few variables involved as one would expect.  I would guess 425 at 25 psi of boost on a healthy engine at the rear tires.

Joe Lubrant came up with this many years ago   http://www.gnttype.org/techarea/misc/lubrant.html   I think it is a good guide
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Offline earlbrown

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Re: HP question
« Reply #3 on: October 09 2014, 02:30:43 PM »
Easy, F=MA

http://users.erols.com/srweiss/calchpm.htm

That calc is a little simplistic as it assumes all cars have the same driveline losses.
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

 

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