The 1947 - Present Chevrolet & GMC Truck Message Board Network - Help in ID'ing this '87+ 5.7 year engine pls.

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Oilbrnr

11-16-2011 01:39 AM

Help in ID'ing this '87+ 5.7 year engine pls.

2 Attachment(s)

Prior, prior owner yanked the original I6 out of this '80 K20, and put this later model 350 in. I put the intake manfold on, thinking it was around 1990ish heads. I'm want to order some Hedmans for it, and was wondering what the year range it might be. When did the exhaust ports change from oval to rectangle?

Thanks!

BigBlocksRule

11-16-2011 08:56 AM

Re: Help in ID'ing this '87+ 5.7 year engine pls.

Those will have ovals, just like all the old stuff. Pretty much any header will fit.
Fitment issues arise when you start running aftermarket heads with huge exhaust port openings.

Oilbrnr

11-16-2011 09:39 AM

Re: Help in ID'ing this '87+ 5.7 year engine pls.

Thanks BBR that's what I needed to know! Just wanted to make sure. Now to clear the clutch linkage... :lol:

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