Questions and suggestions about swapping a older l98 into a 91 rs
02-18-2018, 08:31 PM
#1
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Questions and suggestions about swapping a older l98 into a 91 rs
So I have a l98 from a 88 iroc with its older computer and harness and a 6 speed from a 95z. Swapping into a 91 rs with a 305 5 speed. My question is would I be better off using my tbi harness and finding a speed density computer or just use the older computer and harness?Anyone due a similar swap? have some tips?
02-19-2018, 06:54 AM
#2
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Questions and suggestions about swapping a older l98 into a 91 rs
You'll need to use the L98 harness and it'll be easier to use its ECM as well.
02-19-2018, 09:53 AM
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Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: Questions and suggestions about swapping a older l98 into a 91 rs
That would take a lot of work to make an '88 harness work on a'91
02-19-2018, 02:45 PM
#4
Re: Questions and suggestions about swapping a older l98 into a 91 rs
I'd either find a 91 TPI harness, mod the TBI harness, or find a 3.1L harness and mod it. Of course all of these options mean sourcing a 7730 ecm and the TPI memcal, which isn't easy to come by.
02-19-2018, 02:57 PM
#5
Re: Questions and suggestions about swapping a older l98 into a 91 rs
https://www.thirdgen.org/forums/engi...d-density.html
You can allways get the memcal reprogrammed if it’s for a automatic.
As long as it’s not all spliced that’s a great deal for the harness and ecm.
Being from a bird some of the connections might be short like the ccp.
You can allways get the memcal reprogrammed if it’s for a automatic.
As long as it’s not all spliced that’s a great deal for the harness and ecm.
Being from a bird some of the connections might be short like the ccp.
02-19-2018, 06:48 PM
#6
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Re: Questions and suggestions about swapping a older l98 into a 91 rs
Thanks everyone for the imput!
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