alpinecrick
I'm Awesome
Well gm engineers made heads that are prone to crack,
When the engine is overheated (abused, and/or not well maintained), yep, heads crack--and the lower intake will most likely warp, too. One of the sure signs of poor maintenance of the cooling system is pitted surfaces on the intake.
the 3-4 in a 4l60e was designed with bad fluid flow and cooling issues that a couple drilled holes fix and it took racers to figure that out not overpaid dummies. You can keep on the factory is best bandwagon and I'll keep on using my non gm parts in trans and engines I mean sunnex parts are doing great in my trans but that's jus me
Got me there. My rebuilt 4L60e's are drilled. Then again I wonder how my friend's all original heavy *** '98 Suburban with the factory 4L60E has lived for 230k here in Western Colorado where long, sustained 3000ft elevation gains with the TQ unlocked are common (and where the air is less dense and doesn't cool nearly as efficiently) . Might be because he takes good care of it........
Those same racers also recommend 8 clutch packs, and as it turns out those clutch packs don't live very long with those same long, sustained 3000ft elevation gains with 3 ton+ vehicles. Here in Colorado any of the trustworthy rebuilders I know won't warranty a Colorado trans rebuild with those racing clutch packs. It took the builders of reliable transmissions to figure that out.
And I have the upgraded Sonnex sunshells and pinions among other upgraded parts in two of my rebuilds--but I have no idea if they are race parts or not........
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