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Chevrolet Repair/Identify 1227747 ecm chip

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Expert: Robert Summers - 4/2/2008


Question
I have a chevy astro that has a tbi 350, 3 speed hd 350 transmission (vacuum modulated), 3:73 rear end gear ratio. The ecm says 1227747 ACSU. What is this ecm out of is there a better one? And does a limited slip out of a awd astro have better gear ratio.

Answer
Hi Lance... you can buy performance chips from a good speed shop,they have a program where you can enter your truck info and it will suggest a better chip... as far as a rear end out of an awd astro goes it would depend on the ratio... calling your local GM dealer with the Vin # will get you that info from the truck you are thinking of taking gears from...hope this helps

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Robert Summers

Expertise

domestic auto/truck repair, auto body, painting. I currently own a large auto/truck/marine repair shop. 40 years certified 310S,310T,310B in ontario Canada

Experience

40 years certified 310S,310T,310B ontario qualified, 7 years with GM have owned my own shop now for the past 27 years.was automotive marketing director for large auto parts supplier.

Organizations
CFIB (current) past member AARO and APAA.

Education/Credentials
grade 12 plus 2 years college. many aftermarket training courses

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