Stock GM BIN Question / Advice
05-06-2009, 04:59 PM
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Car: 87 IROC
Engine: 420 EFI
Transmission: TKO500
Axle/Gears: Moser 9" 3:50
Stock GM BIN Question / Advice
Hi Guys,
In addition to my own 355 TPi tuning project, my nephew and I rescued another IROC-Z that was destined for the crusher.
The goal for his car is a stock setup.
The IROC-Z is a 1987 5.0 TPI / T5 setup.
Based on some rough measurements, I think the differential gear set is 3.73:1. Very steep when combined with the T5!
I searched for a few "close" stock GM BIN options and arrived at the following conclusions.
1122ACXC
1139ACYD
The only "published" BIN options that I have found via the web are listed below.
ACXS
1135ACYC
What was the application for the ACXS BIN?
Any other "close match" BIN suggestions?
Best Regards,
Bruce
In addition to my own 355 TPi tuning project, my nephew and I rescued another IROC-Z that was destined for the crusher.
The goal for his car is a stock setup.
The IROC-Z is a 1987 5.0 TPI / T5 setup.
Based on some rough measurements, I think the differential gear set is 3.73:1. Very steep when combined with the T5!
I searched for a few "close" stock GM BIN options and arrived at the following conclusions.
1122ACXC
1139ACYD
The only "published" BIN options that I have found via the web are listed below.
ACXS
1135ACYC
What was the application for the ACXS BIN?
Any other "close match" BIN suggestions?
Best Regards,
Bruce
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