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I am putting a good, used (35K) older Vortec short block under my 1999 Tahoe's (062) heads and CFI injection and cannot seem to come up with a combination of pushrod/rocker arms that produce proper valve operation. something wierd in there on that ******* stepchild motor?
- Highwayman
- Thread
- Jun 20, 2021
- Replies: 1
- Forum: Engine Performance + Maintenance
Headers difference

I have a ‘99 Tahoe with a 5.7 I would like to put headers on, but don’t want to spend a fortune. All listings change at ‘99! Is it because of that damn EGR tube? Earlier models fit if it is eliminated?
- Highwayman
- Thread
- Mar 26, 2021
- Replies: 2
- Forum: Exhaust
Too many Oxygen sensors!

My Tahoe has the 4 oxygen sensor setup before and after the cats. On an off-road truck with no cats, anyway to reduce that number and still send the proper signals.
- Highwayman
- Thread
- Jan 19, 2021
- Replies: 28
- Forum: Engine Performance + Maintenance