GM Crate Engine quality??
GM Crate Engine quality?? I was talking to a guy about this the other day and was curious. Are the GM Crate engines that you get from places like GMCrateenginedepot and SDPC the same quality as what came in the car originally? He was saying that the manufacturing tolerances/quality are different and that he's had nothing but terrible luck with buying crate engines... Burn oil, low compression, short service life, etc...
I always assumed they were of the same quality and tolerances as what came in the cars as original equipment...
I always assumed they were of the same quality and tolerances as what came in the cars as original equipment...
What's the difference for anyone who knows, between the GM performance crate engines and just the GM Goodwrench LS1, LS6, LS2, etc?? I saw them listed as two separate deals when I was reading about them earlier...
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
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From: So.Cal.
The GMPP motors are put together in small production runs, with performance parts, with a little more care, quality is better than OEM stock... these are upgrades.
The GM Goodwrench motors are put together in large production runs, with stock parts, not necessarily with any care, quality is no better than OEM stock... these are warranty replacements.
The GM Goodwrench motors are put together in large production runs, with stock parts, not necessarily with any care, quality is no better than OEM stock... these are warranty replacements.
Production engines run a different validation test than a performance crate engine.
Production engines must run at 110% of rated power for 100 hours without failure as I recall, the performance crate engines reduce that to 100% rated for 50 hours. They both are very tough tests that validate the parts used can take the heat!
Kurt
Production engines must run at 110% of rated power for 100 hours without failure as I recall, the performance crate engines reduce that to 100% rated for 50 hours. They both are very tough tests that validate the parts used can take the heat!
Kurt
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Production engines run a different validation test than a performance crate engine.
Production engines must run at 110% of rated power for 100 hours without failure as I recall, the performance crate engines reduce that to 100% rated for 50 hours. They both are very tough tests that validate the parts used can take the heat!
Kurt
Production engines must run at 110% of rated power for 100 hours without failure as I recall, the performance crate engines reduce that to 100% rated for 50 hours. They both are very tough tests that validate the parts used can take the heat!
Kurt
Has anyone on here ever had issues with a GM crate? I figured the hot rodders would love the LS6, LS2 and LS3 crates... Slap heads/cam/intake/exhaust on it and drop it in. Ready to go with reliable power...
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teh goodwrench engines are the same as factory stock. they have a nice warranty and is exactly the same as the original engine. some the production engines are also being sold as GMPP engines (like 5.3,6.0, etc) they have a 3 year or 100k warranty on the goodwrench motor. i order them all the time and have only seen a problem with 1 in the last seven years at a dealer. it was a 3.1L malibu engine that had the rocker arms loose.
