PRC 227 guys come in
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From: Charleston Illinois
PRC 227 guys come in So I am installing the PRC 227's to go along with the MS4 already in the car. I measured for pushrod length today and its good kinda between 12 and 12.5 turns. so if I go with the 12.5 thats a length of 7.425 before the preload. Just thought that seemed kinda long. What liength pushrods are others running with these heads? I will call TSP tomorrow hopefully. what preload should be ran with these also? Thanks
^ IIRC, stock is 7.5. So that may be right on the money. My buddy is running 7.350's on his MS4 also. Depends on your head gasket too.
The PRLC doesn't lie.
If you feel like doing some side reading.. i got my info from here. (this page has PR sizing info)
https://ls1tech.com/forums/generatio...preload-5.html
The PRLC doesn't lie.
If you feel like doing some side reading.. i got my info from here. (this page has PR sizing info)
https://ls1tech.com/forums/generatio...preload-5.html
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TECH Resident
iTrader: (11)
Joined: Oct 2004
Posts: 889
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From: Charleston Illinois
ok well that make me feel better. I got a little worried when the 7.4's that I ran with the PRC LS6's were way too short. Good thing I measured. lol Thanks for the info guys
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Those heads will require a longer pushrod. Depending on milling options, you should need 7.450-7.500. From what you are seeing you are correct. Let us know when you're ready for them and we'll get you fixed up!
Jon
Jon
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Let us know how those thing run! I've been building them like crazy lately & they're always making some big hp! That without a doubt is the best all around cylinder head for the LS1/LS2 cathedral cars.
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Wondering if you have results you can share to prove that statement...not doubting but I have seen only average results from the PRC215s...
thanks
