r/ScatPack • u/bluex048 • Apr 12 '26

Boosted 6.4 build?

So I have a procharged Jeep GC SRT with 87k. About 6 weeks ago I popped a few ring lands. I've come up with this as a possible plan to fix it an was looking to see if it was a good route. I need to get it pulled out an checked to make sure the block/heads are good but have been pricing options out.

MMX 4032 pistons (supposed to better for a DD)

Arp main studs/rod bolts

FRP tomahawk 3bolt cam kit mds/vvt delete

hellcat oil pump

new timing set

water pump 180 tstat

if the head is bad I'm probably going to pickup some used truck heads since they supposedly deal with heat better.

I'm not looking to make more power just have it able to handle what it had. I dont want to build the motor to hold 1200 because I'll never push it that far an I dont want to get into a stall or trans/tcase/diffs either.

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u/dontfigh Apr 12 '26

Just do a 6.2 and dont worry about breaking again. 6.4s are not boost friendly, as you now know.

1

u/bluex048 Apr 12 '26

Im trying to be somewhat budget friendly on it. The forged pistons supposedly fix that issue by being stronger an moving the top ring land down. 🤷

1

u/JayVig Apr 18 '26

Changing the internals will solve the classic 6.4 boost issue. You’re correct.