LS1TECH - Camaro and Firebird Forum Discussion
LS1-LS2-LS3-LS6-LS7 PERFORMANCE
Conversions & Swaps
Losing power on top end

Conversions & Swaps LSX Engines in Non-LSX Vehicles

Sponsored by:

Losing power on top end

Reply Subscribe

Search this Thread

Old

Nov 25, 2019 | 10:12 PM

#1

Thread Starter

Registered User

Joined: Nov 2019

Posts: 2

Likes: 0

Default

Losing power on top end

I have a 85 Oldsmobile cutlass with a stock 5.3, 350 transmission 3500 converter and 4.10 gear, my 60 foot 1.62 330 5.06 594 7.42 1/8th et is a 7.96 @ 84 mph. Could anybody have any idea to why my top end falls off so bad ? Could it be lack of fuel ?

Old

Nov 26, 2019 | 06:36 AM

#2

Restricted User

Joined: Mar 2014

Posts: 7,192

Likes: 109

From: Ohio

Default

Its a stock 5.3? Power peaks at just 5300 in a stock LM7 and starts to fall off. You haven't really said what "top end" is.

Old

Nov 26, 2019 | 06:45 AM

#3

TECH Fanatic

iTrader: (13)

Joined: May 2010

Posts: 1,372

Likes: 215

From: Lafayette, Louisiana

Default

What is the fuel system on your setup?

Old

Nov 26, 2019 | 07:13 AM

#4

Restricted User

Joined: Mar 2014

Posts: 7,192

Likes: 109

From: Ohio

Default

Yeah there's a lot of questions that could be asked here. You didn't give us any real information.

Old

Nov 30, 2019 | 08:27 AM

#5

TECH Senior Member

iTrader: (3)

Joined: Jun 2004

Posts: 5,639

Likes: 71

From: GA, USA

Default

Data logs could help with the supply of information.
As Joe said, need more info.

Reply Subscribe

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 11:29 PM.