Anyone tried PRC 237CC full aftermarket casting heads?
#2
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Yea you going to have to really look around for info on them,Its out there though.
Very nice heads its what im putting on my 427 boosted motor. I think there better then afr225 for a few reasons. I think the deck is thicker/ I love the fact the rail is raised a little.
come with nice springs and for 60 more very nice springs which a great for high rpms or boost. Flow very good numbers. the prc 237 heads are flowed with out a pipe. alot of heads are flowed with a pipe cause it raises the flow numbers which looks better on paper.
Very nice heads its what im putting on my 427 boosted motor. I think there better then afr225 for a few reasons. I think the deck is thicker/ I love the fact the rail is raised a little.
come with nice springs and for 60 more very nice springs which a great for high rpms or boost. Flow very good numbers. the prc 237 heads are flowed with out a pipe. alot of heads are flowed with a pipe cause it raises the flow numbers which looks better on paper.
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We're getting ready to run another big run pretty soon. After that you'll have some results. We have dyno results on the engine dyno comparing the cylinder heads your discussing, but I don't want to post the results. Needless to say they worked very well though!!
We recently had several 418s go over 670flywheel hp with the 237cc heads.
http://www.texas-speed.com/shop/item...d=992&catid=40
We recently had several 418s go over 670flywheel hp with the 237cc heads.
http://www.texas-speed.com/shop/item...d=992&catid=40
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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
#5
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We're getting ready to run another big run pretty soon. After that you'll have some results. We have dyno results on the engine dyno comparing the cylinder heads your discussing, but I don't want to post the results. Needless to say they worked very well though!!
We recently had several 418s go over 670flywheel hp with the 237cc heads.
http://www.texas-speed.com/shop/item...d=992&catid=40
We recently had several 418s go over 670flywheel hp with the 237cc heads.
http://www.texas-speed.com/shop/item...d=992&catid=40
i saw the PRC 215cc heads making very good power.
thanks.
#7
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I saw TSP say 13 degrees for the 215cc head in another thread. I'm really liking the little bit of info that's coming out from actual owners of these heads (215cc). It's just about swayed me from the trickflows since I can save about $700 over them and get the same, if not better, performance.
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#9
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The 215's and 237's are 13.5ş valve angle
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Yes sir, they do require longer than stock pushrods (measure it to be accurate!). They work perfectly with a 3/8" pushrod!
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http://www.texas-speed.com/shop/item...d=152&catid=51
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I have been in the head market for awhile and both the 215's and 237's i have looked into before. How would either of these guys stack up on a stock shortblock ls1 with a 224/230 114lsa cam? Car is a weekend warrior street car that rarely sees the track.
#20
i just finish to install PRC237 on my 427 LY6 and i lost 15wtq trough out the powerband and 10rwhp on top end so i removed them and re install my prc stage 2.5 heads..237 heads were 64cc and 5.3 stage 2.5 were 61cc...i was a very desapointed..!! put down 525RWHP and 506RWTQ with 2.5 and in a leaning condition of 13.5afr.. 516 and 493RWTQ with 237cc