ls1 in 91z vert?

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Jan 28, 2005 | 01:09 AM

1hot91

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ls1 in 91z vert?

i want to retain my stock guage cluster. is that possible as i have a 01 ls1 combo i want to transplant? is there something i can buy that will adapt everything?

Jan 28, 2005 | 05:21 AM

crainholio

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91 is a great year for this, given it has an electronic speedometer.

The oil pressure, fuel level, coolant temp are directly compatible. Add a '98 coolant temp sending unit to your LS1 and you'll have gauge output.

Tach requires some black-box electronics to be accurate, as the LS1 PCM returns a 4cyl waveform.

Speedo may work directly with the 4k pulse/mile PCM output, but I'm not positive. MrDude_1 should probably know the answer on this one, PM or email him if he doesn't jump in.

Jan 28, 2005 | 07:06 AM

Kewl_Blades

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also tons of this kinda info on thirdgen.org and other 3rd gen sites.

Jan 28, 2005 | 07:08 AM

crainholio

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thirdgen.org is down for a little while, hardware failure

Jan 28, 2005 | 09:17 AM

MrDude_1

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Quote:

Originally Posted by 1hot91

i want to retain my stock guage cluster. is that possible as i have a 01 ls1 combo i want to transplant? is there something i can buy that will adapt everything?

the only thing you need to buy is a tach adapter.
the LS1 puts out a 4cyl tach signal. the 91 tach is expecting a V8 tach signal.
you can get a box from baker electronics to fix that for $35.

if you had TBI:

your stock 4000PPM (pulse per mile) speedo signal went to a buffer box. the buffer box then split it into a 2000PPM and 4000PPM signals for cruise, ECM and speedo..

if you had TPI:

the 4000PPM speedo signal went directly into the ECM. the ECM outputs the 2000PPM for the cruise and 4000PPM for the speedo

you can feed the LS1 4000PPM output directly to the speedo and it works.

this is probly the most useful thing you'll ever get online for your car, lol :
http://66.83.134.202/travis/91FbodyWiring/

save ALL of thoes PDF files to your computer.... its the ENTIRE wiring for your car.. and its worth its weight in gold... i took thoes files to office depot, and had them printed and bound into a book for garage refrence.

Jan 28, 2005 | 01:01 PM

crainholio

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Quote:

Originally Posted by MrDude_1

this is probly the most useful thing you'll ever get online for your car, lol :
http://66.83.134.202/travis/91FbodyWiring/

save ALL of thoes PDF files to your computer.... its the ENTIRE wiring for your car.. and its worth its weight in gold... i took thoes files to office depot, and had them printed and bound into a book for garage refrence.

Also worth it's value in jail time for copyright infringement.

I hate to keep busting on you, but this is illegal. You shouldn't be putting this board at risk using it to break the law.