Few videos from this weekend at the drag strip. Suspension changes fixed the traction issues I had last year. I was able to pull all the launch retard out of the tune and still get it to stick. Next step will be to reduce the boost ramp from 1.25 seconds back down to about 0.5 seconds like I used to run. If I can get a 1.42 60’ again or better it is easy 9 second run, even with the extra weight the 4T80 added. Best run on stock computer, 4t65 and 6262 turbo was 10.007&138mph. Approximately 200lbs heavier now and only running 1.549 60’, getting a 10.047@138mph is very encouraging. The new PSR 6466 turbo seems to be helping as well as I only ran a 10.20@135 in 20degree cooler air last fall with the Precision 6262.


27lbs with a few issues:
https://youtu.be/pYKz-3SMpdw?si=khVvqAYig_fQ50xV


23lbs clean run-fastest run I’ve made at this boost setting
https://youtu.be/gZWs0KMgAd8?si=EBL43Z7EI8PeTpD8


Street boost:
https://youtu.be/NpkmHBRXbgI?si=t1rx1_0ADJzT5uPL



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10.007 @ 135.54MPH. <-- Video
Best 60' 1.42
Best mph 138.82
Billet 6262 Precision turbo, PT1001 intercooler, ST1 cam, 140lb springs, comp pushrods, HV3, stock L32 bottom end and heads.

Old M90 XP Cam time -
11.425 @115.60
1.543 60'

[This message has been edited by LFiero67 (edited 06-11-2025).]

Just watched your videos.
I would love to be able to get into the 10s!
Your car is really impressive!

What size tyres are you using at the rear? They seem kind of "fat" and they fill out the wheel well / fender housing perfectly.

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"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France! @turboslugfiero
https://youtu.be/hUzOAeyWLfM

Wow ! Very impressive 1/4 mile time with a 3800. Do you believw that using a GM 6T45 have gotten you into the 9's? .

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

255/50R16 on GTP 16x8 wheels.

Dennis, I’m assuming you meant 4T65, and yes at the weight I was with the 4T65, it likely would have ran a 9, but only with a $$$ built 4t65 would it be possible reliably.

This is a stock 4T80 that I have had in the car over a year that cost 1/4 or less than my old GMRacing equipped 4T65(1” chain, aermet 100 input shaft, Z pak 3rd, etc,etc). I broke both styles of zzp input shafts and multiple 7/8” chains in less than a year with the turbo before getting the GM racing stuff. 4T80 is heavy, but so far has put up with everything I’ve thrown at it, the 4t65 didn’t even survive a month of street driving/tuning before breaking first input shaft and stretching first 7/8” chain in 2012.

[This message has been edited by LFiero67 (edited 06-11-2025).]