Build update - 4T80 3800 Turbo (Page 10/10)
LFiero67 SEP 13, 09:23 PM
technical difficulties lol

[This message has been edited by LFiero67 (edited 09-13-2025).]

Jncomutt SEP 17, 02:54 PM
That thing needs a trans brake. ๐Ÿ‘
LFiero67 SEP 17, 06:04 PM
Trans brake would just be harder on axles and differential. I need to get suspension working again and it should be able to do a 1.3 60โ€™ on prepped surface.

No issues holding on the line and can build more boost than I can launch with. For the airport I was pulling 15 degrees of timing on the launch and ramping in after 0.5 seconds through 2 seconds to keep traction. Run I lost traction I shortened up the time it was -15 and the time it ramped back in and thatโ€™s why it spun and went left.
LFiero67 SEP 20, 01:58 AM
Finally ran a 9 second pass!

Car battled me all night, ended up taking a bunch of power out of the launch and it finally stuck. Ran 1.472 60โ€™, 6.319@110.99 mph 1/8th mile and

9.850@139.43mph 1/4mile
Video: https://youtu.be/YY9vKmMml-U?si=OfO_023NeJbbhISH

[This message has been edited by LFiero67 (edited 09-20-2025).]

fieroguru SEP 20, 06:48 AM
Congrats! That makes you the quickest Fiero with a transverse drivetrain, bumping darkhorizon from that spot.
Dennis LaGrua SEP 20, 10:58 AM

quote
Originally posted by fieroguru:

Congrats! That makes you the quickest Fiero with a transverse drivetrain, bumping darkhorizon from that spot.



Yes a 9.85 is the quickest 1/4 mile ET ever for a boosted 3800 in a Fiero . Scott ran a turbo 9.87 ET with nitrous to get that ET. All this talk about fast Fieros has me wondering why some of the LS 4 swaps have not tried to break the record. Maybe one day we will hear how the V8 stacks up.

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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 "