Guest MegaShaft_2000 Posted August 3, 2003 Share Posted August 3, 2003 Have you dyno'd your car? How much power is your GN drivetrain putting to the wheels? Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted August 4, 2003 Share Posted August 4, 2003 I tried to dyno my car once but the chip I use, the way it is programmed and the procedure used by the dyno operator were not compatible. I use a datalogger and feel I have been doing fine tuning on my backroads and the track. As for how much HP, I calculate it with a formula (quite accurate) that factors in ET, MPH and weight w/driver. With 2,750lbs and a best of 10.36 @ 131.75, the formula spits out 484.8RWHP. How does that compare to a dyno? Since a dyno measures peak HP and the formula is more of an average over distance, I would venture a conservative guess of 500+. Hard to say if that is a good estimate because I do not know how long before I reach peak after launch and regain regain peak between the shifts and locking up the converter. For all I know it could be 525 but the only number that counts to me is useable HP. No point in having a big dyno number if you cannot put it to the ground or have to wait endless seconds to get to peak. I believe throwing dyno HP numbers around for comparison is water-cooler chit-chat. The only meaningful thing about a dyno number is how YOUR best pull compared to your 1st pull. Oops. Long answer to a short question Quote Link to comment Share on other sites More sharing options...
Guest Zachb55 Posted August 5, 2003 Share Posted August 5, 2003 wow, i never knew you were putting out those sort of numbers. I have always believed more in the few different formulas out there to figure horsepower too, because it really is more of a "how much horsepower are you actually using thing, not just "how much can you make" thing. now i havent really followed your swap too closely scottie, but what mods have you done to your drivetrain to get that power to the ground and not break a lot of stuff? -Zach Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted August 6, 2003 Share Posted August 6, 2003 -The shortblock has been freshened up with +.020 Fed Moguls hypers pistons. "OH MY GOSH, those pistons are crap and will certainly blow up" :D Just had to get that in. Only other thing done to the shortblock is ARP rod bolts. Those pistons have been in for 2.5yrs with a couple hundred passes. -The heads are ported iron heads with slightly larger valves (not even worth mentioning) but higher quality and port-matched intake -Larger TB, 62mm upgraded from a 57mm. Yes, many L28s have larger TBs than me -Larger turbo, 62 compressor and P-trim, but it is actually a hybrid because it has a t3 .63 turbine housing, internal wastegate -3" mandrel DP and single exhaust -Massive SX pump and filter, -8 feed, stock Z feed as return, 50# injs and LOTS of octane! -Cartech FMIC with 2.25"/2.5" plumbing -Crank up the boost to 24-25psi. -Careful, diligent tuning Power-wise, that's it. Other: 3200 stall 9.5" converter, shift kit and transbrake, ratchet shifter, 26x9.5-16 Hoosier QTPs on 16x8, front skinnies on 15x3.5, know your car and setup so well you become one with it at the track. Quote Link to comment Share on other sites More sharing options...
BRAD D Posted August 6, 2003 Share Posted August 6, 2003 What kind of tires do you use at the track? I am thinking of getting some slicks for the track. This post sums up my first day at the track.... http://www.hybridz.org/phpBB2/viewtopic.php?t=24473 Quote Link to comment Share on other sites More sharing options...
BRAD D Posted August 6, 2003 Share Posted August 6, 2003 26x9.5-16 Hoosier QTPs on 16x8, sorry just had to look Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.