1987 issues / Help Please - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1987cherokee · 01-08-2012, 07:55 PM

Im in the process of my first 87 swb re-build. 1st issue is with the engine. I put a Comp Cam (268) in an otherwise stock 350/ TBI set-up. Do I need a E-prom change ? Having idle issues.

2nd question.... Have located a rear end from a 1990 454ss. It is supposed to be a stock application 373 posi. What issues will I face trying to install into my 1987 ??

Thanks in advance for any help !!!!

makman1297 · 01-08-2012, 11:01 PM

This should help with your cam selection. http://www.tbichips.com/truckmods.htm

The rear axle will have a different spring perch width and shock mount location, not a direct swap without welding/modification.

01-08-2012, 07:55 PM	#1
1987cherokee Registered User Join Date: Aug 2010 Location: Lexington, Tn. Posts: 2	1987 issues / Help Please Im in the process of my first 87 swb re-build. 1st issue is with the engine. I put a Comp Cam (268) in an otherwise stock 350/ TBI set-up. Do I need a E-prom change ? Having idle issues. 2nd question.... Have located a rear end from a 1990 454ss. It is supposed to be a stock application 373 posi. What issues will I face trying to install into my 1987 ?? Thanks in advance for any help !!!!

01-08-2012, 11:01 PM	#2
makman1297 Registered User Join Date: Mar 2010 Location: Beaufort SC Posts: 583	Re: 1987 issues / Help Please This should help with your cam selection. http://www.tbichips.com/truckmods.htm The rear axle will have a different spring perch width and shock mount location, not a direct swap without welding/modification. __________________ 1981 Dodge D-150 (under construction) 2007 Chevy Suburban 2010 Dodge Charger R/T 1980 Kawasaki KZ 440 2004 Harley Sportster 1200

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