355 should run mid 13s

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May 10, 2005 | 12:16 PM

Calico

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Joined: Jul 2004

Posts: 218

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From: Eastside

Car: 1985 Buick Regal T

Engine: 87 3.8 turbo/lc2 drive train

Transmission: 200r4brf

355 should run mid 13s

Last edited by Calico; Jan 13, 2006 at 01:26 PM.

May 10, 2005 | 06:14 PM

KiLLJ0Y

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Joined: Feb 2005

Posts: 2,642

Likes: 2

From: Pleasant Grove, Utah

Car: 1993 GMC Typhoon

Engine: 4.3 Turbo

Transmission: 4L60

Axle/Gears: 3.42

...................... what?

May 10, 2005 | 08:58 PM

gmgod

Supreme Member

Joined: Mar 2002

Posts: 1,176

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From: Springfield, MO

Car: 92 T/A VERT

Engine: LB9

Transmission: AUTO

Axle/Gears: 7.5 / 3.42's

What cam...... which heads?

May 10, 2005 | 09:39 PM

Fast355

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Posts: 10,409

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From: Hurst, Texas

Car: 1983 G20 Chevy

Engine: 305 TPI

Transmission: 4L60

Axle/Gears: 14 bolt with 3.07 gears

What year? Speed density or Mass Air? Could be a tuning issue.

May 11, 2005 | 12:47 AM

Mr Badwrench

Junior Member

Joined: May 2005

Posts: 44

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From: Sin City, NV

Car: 88 RS

Engine: 2.8 untill the 3800 swap

Transmission: Auto

What's the o2 voltage where it starts falling on it's face? Sounds like a plugged fuel filter or just no fuel pressure. scan data snap shot would be real helpful.

May 11, 2005 | 02:17 PM

BlackRob91

Junior Member

Joined: Dec 2004

Posts: 6

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Car: 1991 FireBird Formula

Engine: 355 TPI

Transmission: 5 Speed Manual

355 should run mid 13s

Its has stock cam I believe and L98 heads that were dremmled out I believe. I just dont know what the problem is I think it might be a computer issue too, maybe I dont have the right computer or chip, maybe my fuel pressure is to low because I do have an adjustable regulator. It fuels as if the power is lagging? its thier but not quite. Ihave no clue what it could be?????