cpi to tbi

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#11

09-28-2007, 03:13 PM

swartlkk

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Join Date: May 2005

Location: Waterloo, NY

Posts: 41,173

RE: cpi to tbi

Yes, to your '95 motor, they should be the same. Please put your vehicle information in your signature and attach it to your posts so questions can get answered more clearly.

#12

09-29-2007, 08:56 PM

SirLDragon

Join Date: Sep 2007

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RE: cpi to tbi

Quote:

ORIGINAL: Hanr3

That answer depends on the year of the truck, not the CPI/TBI/fuel injection system.

In '95 GM changed the angle between the heads and intake manifold. Intakesprior to '95 can be swapped on engines prior to '95. Intakes after '95 can be swapped on engines after '95. You cannot swap intakes prior to '95 on engines after '95 and vice versa. That is hte simplified version.

Ok, that's completely off from what I've been told prior to this. And kind of confusing since the CPI ("W" code Vortec) intake is the same from '92 to '95. Or is there a difference to the inside of the lower plenum where the bolts are?

#13

09-30-2007, 12:08 AM

Hanr3

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Join Date: May 2005

Location: Central Illinois

Posts: 3,890

RE: cpi to tbi

This may help.
http://www.babcox.com/editorial/ar/ar40047.htm

'95 is a confusing year. GM made changes over the life of the engine, however '95 is the most confusing.