changing prom from 305 to 350, options? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

munroe · 07-23-2007, 11:17 AM

im going ot need to change my computers prom from 305 to 350 in my 87 c10. the reason is im replacing the 350 carb motor that replaced the 305 tbi origional motor with a 350 tbi.the wiring harness and computer were left in the truck when the po did the swap. what im wondering is besides getting a stock prom from gm, could i replace the 305 prom with one from an outfit likr jet or one of the other chip makers? it might be easier to upgrade now as opposed to later. any ideas?

07-23-2007, 11:17 AM	#1
munroe Registered User Join Date: Feb 2007 Location: hants co. nova scotia Posts: 151	changing prom from 305 to 350, options? im going ot need to change my computers prom from 305 to 350 in my 87 c10. the reason is im replacing the 350 carb motor that replaced the 305 tbi origional motor with a 350 tbi.the wiring harness and computer were left in the truck when the po did the swap. what im wondering is besides getting a stock prom from gm, could i replace the 305 prom with one from an outfit likr jet or one of the other chip makers? it might be easier to upgrade now as opposed to later. any ideas? __________________ 87 chev wrangler



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