Best Crate Motor and Trans for 1999 Tahoe

YukonGTmaster

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hank89, I went with the new MPFI Spider off EBay, sold by motorman. There was a noticeable increase in throttle response. I ran with my OBD scanner plugged in and averaged 14 MPG



As for intake, I could not find any new stock intakes for an L31. The marine intake has external fuel rails, so it is a completely different animal. I have posted the link below of my adventures while doing my Spider and lower intake manifold gasket.


I purchased my 97 Yukon GT new, and started running green coolant after year 3. I have 270k Miles on my engine.

Good Luck!
 
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