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L31 knock after rebuild

I have a 96 sierra 5.7l I blew up a while ago that got put on the back burner for a couple months. Recently finished the rebuild and got the truck running today. Motor has reground crank, new connecting rods and piston rings, new main, rod, and cam bearings, and new oil pump. Crank journals and...
- TBMG270
- Thread
- Mar 7, 2021
- Replies: 12
- Forum: 96+ Vortec Performance + Computer Swaps
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TBI gas tank in Vortec truck?

Just wondering if the gas tank from an 88-95 truck is the same as 96+. My 96 needs replaced and I have the one out of my old truck which is a 94. Almost positive they're the same capacity wise. Both 28(?) gallon I think. 26? Something like that, not entirely sure. I just need to know if the pump...
- TBMG270
- Thread
- Mar 2, 2021
- Replies: 8
- Forum: 96+ Vortec Performance + Computer Swaps
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400 cracked block?

Buddy of mine has this 400 laying around he told me I could have. Gave it a once over and noticed it looks like it's cracked. Only its real shallow and looks awfully uniform to be a crack. I'm not entirely sure so figured I'd get some other opinions on it. Was also wondering if anyone's used a...
- TBMG270
- Thread
- Dec 29, 2020
- Replies: 38
- Forum: Engine Performance + Maintenance
T
Exhaust leak and running rough

New to the forum but I've used the site to help figure things out before. I have a 1996 sierra 1500 4x4 with a 5.7. Bought the truck a few months ago and has been relatively problem free since then. I was on a long drive a couple days ago, about 100 miles, and I've been making this same trip...
- TBMG270
- Thread
- May 2, 2020
- Replies: 2
- Forum: Exhaust