Author Topic: Estimate hp/tq and maybe quarter time  (Read 1194 times)

77ta455

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Estimate hp/tq and maybe quarter time
« on: May 30, 2017, 05:43:00 PM »
Hey guys, I'm just wondering what you would put my numbers at so far. Here is my setup


77 trans am
71 455
800 cfm edelbrock carb
Performer intake
96 heads
Summit 2802 cam
Ram air 3 manifolds with full 2.5 inch x pipe
13" continental converter (I believe it's a 2800 stall)
3.42 gears
Butler 1.5 roller rockers

If you need anymore information let me know I'm sure I'm forgetting something.

Let's do quarter time as it would be if I actually got good traction which is far from the truth. I appreciate any input you have or advice on where to go from here to increase performance as much as possible without sacrificing too much of its street manners. I plan on eventually doing a hydraulic roller setup Potentially using the old faithful from sd performance along with potentially an efi setup (I would really like opinions on that)

Thanks everyone.

70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #1 on: May 30, 2017, 05:47:26 PM »
Give me about 1 hour .
I will estimate with DD2000 for You.
Numbers and graphs to look at then.

77ta455

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Re: Estimate hp/tq and maybe quarter time
« Reply #2 on: May 30, 2017, 06:08:50 PM »
Give me about 1 hour .
I will estimate with DD2000 for You.
Numbers and graphs to look at then.

Awesome man thank you.

70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #3 on: May 30, 2017, 06:58:20 PM »
I am searching for the Summit 2802 Cam Card.
Actual IVO, IVC, EVO, EVC numbers as measured at the crank with a degree wheel.
No one has put online prior I see.


70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #4 on: May 30, 2017, 07:03:36 PM »
Found it.

Kinda surprised others have not done the same for the Pontiac world prior.

Well just one other does. Chevy Guy.
Taught us how in a small group of less then 10.

Re: Estimate hp/tq and maybe quarter time
« Reply #4 on: May 30, 2017, 07:03:36 PM »

70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #5 on: May 30, 2017, 07:55:30 PM »





70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #6 on: May 30, 2017, 07:59:40 PM »

70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #7 on: May 30, 2017, 08:03:20 PM »
Not too bad for a budget 455 street build.
With your Butler 1.5 rocker arms.
Cam appears to be a Modified RAIV for the street crowd on pump gas.

Likely improve with 1.65 Rockers.
Not much cam lift  with 1.5 or 1.65 so most pistons off the shelf should be safe with P.T.V.O.C.

70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #8 on: May 30, 2017, 08:10:20 PM »

70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #9 on: May 30, 2017, 08:13:43 PM »
The Wallace 1/4 mile time shows results in actual full drag race RACE CAR Configuration.
Professional driver at the wheel.

Figure you will 1/4 around .4 -.5 seconds slower or more.

« Last Edit: May 30, 2017, 08:15:40 PM by 70RAIV455 »

70RAIV455

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Re: Estimate hp/tq and maybe quarter time
« Reply #10 on: May 30, 2017, 08:36:46 PM »
The Wallace Racing calculators are pretty accurate accounting for drivetrain HP losses I have found.


We used them for years on the Corvette forums & Grumps.

77ta455

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Re: Estimate hp/tq and maybe quarter time
« Reply #11 on: May 30, 2017, 10:23:16 PM »
Thanks so much for the super in depth info man. I appreciate it. Not quite the numbers I was hoping for but that's okay, still plenty to be done. Thanks again.

T/A81blue

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Re: Estimate hp/tq and maybe quarter time
« Reply #12 on: June 04, 2017, 02:45:37 PM »
Thanks so much for the super in depth info man. I appreciate it. Not quite the numbers I was hoping for but that's okay, still plenty to be done. Thanks again.

I honestly thought it was going to make more power myself...

chief poncho

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Re: Estimate hp/tq and maybe quarter time
« Reply #13 on: June 29, 2017, 01:55:23 PM »
Looks pretty accurate.  I had a very similar setup years ago in my '71 TA.  455 running an 068 cam, d-port 96 heads, headers and 2.5" duals, Holley 800cfm carb, stock converter TH400 transmission with 3.42 gears and I could run high 13's to low 14's at 101mph on street tires at an altitude density of about 1500 feet.   I had serious traction issues, and was probably running 2.2 to 2.5 second 60' times.  The car had a lot more in it, if I could get it to hook.  I could not go wide open throttle at any time in 1st gear without getting the car loose.  It, probably would have easily run low 13's to high 12's if I could get it to hook. 
« Last Edit: June 29, 2017, 01:57:18 PM by chief poncho »
1971 Lucerne Blue Trans Am (455HO, Automatic) - currently my project car.
Previously Owned TA's/Musclecars: 2002 Pewter WS6/M6 Trans Am, 1968 Dodge Superbee 383/4speed,  1975 TA 455/4speed, 1989 Mustang LX 5.0/5speed, 1980 TA Indy Pace Car, 1977 TA 400/Auto, 1989 GTA 350TPI, 1990 GTA 350TPI, 1986 IROC 305TPI, 1989 Mustang LX 5.0/Auto, 1993 Mitsu 3000GT VR4 (and probably a few I've forgotten about)

Re: Estimate hp/tq and maybe quarter time
« Reply #13 on: June 29, 2017, 01:55:23 PM »
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