73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Performance => Topic started by: 1979C20 on December 14, 2010, 02:55:25 AM

Title: dyno....
Post by: 1979C20 on December 14, 2010, 02:55:25 AM
I haven't had a chance to take my truck down and have it run on the dyno. So, I was wondering if you guys had a way to predict horse power and torque from specs. 350, standard bored, stock pistons, stock crank ground .010, stock heads, stock valves, Comp Cams 460l, 292d, stock intake, stock rochester q-jet, cooling fan 1inch smaller than stock, headers, no smog, glasspacks, SM465 4spd manual, 4.10 or 4.11 gears, 285xsomethingx16's. If you could tell me how much horsepower/torque to the fly wheel and to the rear wheels, you will get brownie points for whoever is closest when I take it to the dyno.
Title: Re: dyno....
Post by: 1979C20 on December 14, 2010, 02:59:18 AM
Oh, and it would be stock compression ratio and I am running 87octane pump gas. And it is a 1979 C20, if that matters. After the rebuild, I have been able to wind the motor up healthily to 6k rpms.
Title: Re: dyno....
Post by: Captkaos on December 14, 2010, 05:09:37 PM
To the Tire, 200/278

Fat fingered the 3 on there for my guess.
Title: Re: dyno....
Post by: 1979C20 on December 14, 2010, 05:14:13 PM
Okay, guess number 1! Anyone else want bragging rights/brownie points for guessing close? I'm hoping to get her on a dyno after christmas, hopefully before but maybe next year.
Title: Re: dyno....
Post by: Blue 82 on December 14, 2010, 07:25:35 PM
180hp
240 lb/ft
to the ground
Title: Re: dyno....
Post by: 1979C20 on December 14, 2010, 07:36:38 PM
Alright. I got 2 guesses towards the rear wheels, what about just the engine?
Title: Re: dyno....
Post by: mean87 on December 15, 2010, 09:11:21 PM
315hp 370ft-lb at the flywheel 250hp and 300ft-lb of torque at the rear wheel
Title: Re: dyno....
Post by: VileZambonie on December 15, 2010, 09:28:47 PM
165 / 270