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Just got back from the dyno today. How do these numbers look?

This is a discussion on Just got back from the dyno today. How do these numbers look? within the Dyno Information forums, part of the Racing Forums category; I just got my 2001 Pontiac Trans Am dynoed on a Dynojet dyno. It is a bone stock automatic 3.23 ...

  1. #1
    Junior Member
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    Pewter
    2001 Pontiac Transam

    Just got back from the dyno today. How do these numbers look?

    I just got my 2001 Pontiac Trans Am dynoed on a Dynojet dyno. It is a bone stock automatic 3.23 geared car. It has the stock air filter and exhaust on it. I had two dyno runs. My best was 296.1 rwhp 318.4 torque SAE numbers. My STD factor numbers were 302.6 rwhp 325.3 torque. I would like to know if these are good numbers for my car. I ran my car a few weeks ago and it ran a 13.5 103 mph 2.08 60 ft on street tires in 83 degree weather with a little wheel hop. Do you think it is possible to run a little quicker at the track with some drag radials and some supspension work judging by my dyno numbers. Also, will a SLP air lid, and a hooker catback exhaust put me over 300 rwhp SAE numbers. Thanks everybody. [

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    Member Huskerz1's Avatar
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    99 SS Vert M6

    I think those numbers are on par. Of course you'll run quicker with drag radials. I would also say 100% yes to the lid and catback puttin you over 300rwhp easy. Were only talkin 4 hp here. You could do free mods to get there also. Your auto would even do better at the track with a torque converter.

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    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    Healthy normal numbers for a stock LS1....now start modding....Hooker Cb is a nice 1st mod, get yourself a lid and some SFC also

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    Senior Member mrr23's Avatar
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    dark bowling green
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    better than my formula did. 276 rwhp 284 rwtq ran 13.60 @ 101.66 all stock.

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    Member ProwlerZ's Avatar
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    2002 Z28

    Not bad numbers, like stated above, 300 is a low goal, so it'll be easy to hit. Do the FRA and shave the lid-ridges, pull the baffles out and put a smooth bellow in and you'll be over 300. Throw on a lid and a cat-back and you'll be around 315, LTs, ory/x and you'll be well over 330. I'd also suggest a stall, but since I'm an M6 guy, I can't really give advice on that. Oh, get some SFCs too, They'll really stiffen things up for you.
    She's baaaaaccccck...

    '02 Z/28 M6 Hardtop

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    Corvette Moderator BlownC5's Avatar
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    2006 E-Force blown Z06

    those are solid numbers for a stock LS1

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    2001 Trans Am WS6

    Those look like good numbers to me. The autos tend to dyno a little less then the manual tranny cars, but run better at the track on the average.
    2001 T/A WS6 M6
    LS6 Cam/Springs, Lid, SLP Pulley, Magnaflow Catback, TBCB, Richmond 4.10 gearing, Panhard Rod, Strut Tower Brace, Low Control Arms, Lou Thesz Short Stick
    Dyno 351rwhp/341rwtq, and tuned by RacePrep via HP Tuners.

  8. #8
    Senior Member Danger731's Avatar
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    nice for stock, whats your milage ?
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    Member GA Country Boy's Avatar
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    2002 Corvette Coupe

    You can dowload some free software and run all kinds of different calculations so you will know about what to expect: www.virtualengine2000.com/draglist.htm
    Michael
    In GA waving from '02 C5 LS1, Z51, D1SC, 60lb injectors,RPM level 5-4L60E, 3:42, Yank 3600, QA1-12 ways, MTI long headers, high flow cats, Borlas, Wilwood, 603rwhp, 542rwtq.(DynoJet 248-C) 10.89@127.57 on street tires, Race Weight 3,640 lbs

  10. #10
    Member GA Country Boy's Avatar
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    Metallic Red
    2002 Corvette Coupe

    Quote Originally Posted by Bob'sWS6 View Post
    Those look like good numbers to me. The autos tend to dyno a little less then the manual tranny cars, but run better at the track on the average.
    You're absolutely right. If you know the RWHP (like off a dyno) you can estimate the engine (flywheel) HP for comparative/baseline/improvement or other purposes. The usually accepted real wheel hp loss factors are 12% manual and 18% automatics or RWHP/.88 = Engine (flywheel) HP manual, and RWHP/.82 = Engine HP (flywheel) automatic. Many just use 15% for both which is not fair to the manuals and is generous to the autos, because autos experience greater drive train loss than manuals.

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