Difference in 87 to 88 LB9 engines
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Joined: Nov 2004
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From: Houston MS
Car: 87 GTA Trans Am
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 10 bolt posi 3.23
Difference in 87 to 88 LB9 engines
Well I am new to messing with Chevy engines and I am a little lost so I hope someone in here can help.
I just bought my first f-body and I am really wanting to add a supercharger to this. My only problem is every place I go and find the kits they all seem to cut off at 1988.
What ate the differences in the 2 years. From what I have read it is just the SERPENTINE pulley system as well as a different COMPUTER.
IS that correct??
If that is correct is they anything I should know before changing the computer to a 1988 or newer computer? I dont think there should be any problems changing the belts over to a SERPENTINE system.
I guess I should now post a little about the car. It has a LB9 with only 56,000 miles on it (I think but that is for another post.) I just ordered new headers, y-pipe, calco cat, and hooker cat back system. I am working on learning to burn chips myself. I dought I will actually be adding a supercharger before I master burning my own PROMs but it is something I am defiantly going to add. I also may buy a 5.7 and build it up for the supercharger but that will happen after I get the rest of the life out of the old 305.
Thanks in advance for your help.
I just bought my first f-body and I am really wanting to add a supercharger to this. My only problem is every place I go and find the kits they all seem to cut off at 1988.
What ate the differences in the 2 years. From what I have read it is just the SERPENTINE pulley system as well as a different COMPUTER.
IS that correct??
If that is correct is they anything I should know before changing the computer to a 1988 or newer computer? I dont think there should be any problems changing the belts over to a SERPENTINE system.
I guess I should now post a little about the car. It has a LB9 with only 56,000 miles on it (I think but that is for another post.) I just ordered new headers, y-pipe, calco cat, and hooker cat back system. I am working on learning to burn chips myself. I dought I will actually be adding a supercharger before I master burning my own PROMs but it is something I am defiantly going to add. I also may buy a 5.7 and build it up for the supercharger but that will happen after I get the rest of the life out of the old 305.
Thanks in advance for your help.
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
oi'weh refer to the other post about some kid jsut getting an F-body and wanting to add a supercharger. It just came up like yesterday...
Onto the questions. Yes, the belt system is different. No, the computer is not different. Identical, in fact. 1985 cars had a different and inferior computer, and the '89 ones were basically the same but had a little better coding and no cold start injector. Your car can easily be bumped to the "newer" coding with a PROM burn (go to $6E from $32B). The '90-'92 cars used speed density and were a much different setup than the 86-89 computers..
Onto the questions. Yes, the belt system is different. No, the computer is not different. Identical, in fact. 1985 cars had a different and inferior computer, and the '89 ones were basically the same but had a little better coding and no cold start injector. Your car can easily be bumped to the "newer" coding with a PROM burn (go to $6E from $32B). The '90-'92 cars used speed density and were a much different setup than the 86-89 computers..
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Member
Joined: Nov 2004
Posts: 332
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From: Houston MS
Car: 87 GTA Trans Am
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 10 bolt posi 3.23
Originally posted by DuronClocker
oi'weh refer to the other post about some kid jsut getting an F-body and wanting to add a supercharger. It just came up like yesterday...
oi'weh refer to the other post about some kid jsut getting an F-body and wanting to add a supercharger. It just came up like yesterday...
I will look for that post and thanks for the info on the computer. I have found many pulley systems on ebay and it looks like a easy change.
I would like to do something custom but I dont have access to a machine shop any more so that is out. I was a C-n-C programmer for 8 years and about 2 years ago started my own business. To bad I did not start a machine shop. LOL
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