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PRC LS7 Small Bore Cylinder Heads Nears Production! 390cfm on a LS3 Bore!!

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Old 05-15-2011, 09:52 AM
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Originally Posted by Mas280
I had the same problem when I called Friday. So I placed my order with Mast. The staff did not know anything about the heads at all.
Jon@TSP. did you hear that? LOL
Old 05-16-2011, 09:09 AM
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Originally Posted by Stang's Bane
Also, will they fit on a ls2 bore without valve to cylinder wall contact?
No sir, minimum is 4.065" for these small bore LS7 heads!

Originally Posted by Mas280
I had the same problem when I called Friday. So I placed my order with Mast. The staff did not know anything about the heads at all.
Jon and I were here all day Friday, and anybody who called got all the information we have. What information did you want that you didn't get?
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Old 05-16-2011, 10:30 AM
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Originally Posted by Matt@Texas-Speed
No sir, minimum is 4.065" for these small bore LS7 heads!



Jon and I were here all day Friday, and anybody who called got all the information we have. What information did you want that you didn't get?
hey matt

I actually spoke to you last week ( not on friday it was earlier in the week )and you ( unless there are two matts there ) told me that you had no info on these heads yet and that there would be posts on the boards when there was some avail... Im Not jumping on you guys but I had credit card in hand ready to order.
Old 05-16-2011, 10:34 AM
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If you called before we had information, yes, you would have been told that. We had all the information, including firm pricing, as of Thursday afternoon.
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Old 05-16-2011, 10:54 AM
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Just got an update, we are now looking at 4 weeks on the next run of castings getting here due to a small tooling change. You can place orders now if you like. Just trying to keep everyone updated.

Jon
Old 05-16-2011, 11:03 AM
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Originally Posted by Matt@Texas-Speed
If you called before we had information, yes, you would have been told that. We had all the information, including firm pricing, as of Thursday afternoon.
Sounds good
Old 05-16-2011, 11:19 AM
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It will be a month before i need them anyway. So no biggie. im thinking these will be my choice when the rubber hits the road.

Consdiering offaxis' sig...this looks like a good comparo to do
Old 05-16-2011, 06:45 PM
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Does anybody have these heads on a 416/418 yet?
We need some real time #'s.
What intake to run, what cam, anything would help.
Old 05-17-2011, 08:53 AM
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Not to my knowledge. I believe the first run all went on bigger cube motors and we used another set on our shop 2010 Camaro SS.

Jon
Old 05-17-2011, 09:58 AM
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Bigger cube...LS3 427?
Old 05-17-2011, 10:28 AM
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#'s on any motor and flow data would be nice
Old 05-18-2011, 06:42 PM
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Originally Posted by Jon@Texas-Speed
Just got an update, we are now looking at 4 weeks on the next run of castings getting here due to a small tooling change. You can place orders now if you like. Just trying to keep everyone updated.

Jon
Thanks Jon. I appricate the effort of keeping us imformed.

Jim
Old 05-19-2011, 07:55 PM
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Any flow data on these heads?

Also is there any info on any of the cars with the 427`s that got the first run of these heads?

Ive bought everything except my current cam from you guys and I know If I was given access to the first run of these heads there would be dyno and track numbers already posted. Just sayin
Old 05-21-2011, 08:29 PM
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Anybody on the board here get these heads yet? I'm looking for independent #s
Old 05-25-2011, 09:14 AM
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Placing an order with Scoggin Dickey today for the LS3 stroker...hopefully when i get it there will be someone with LS7 small bores ready

Any ideas on chamber size? or did i miss that in the thread..

Last edited by TwoValveKid; 05-25-2011 at 09:28 AM.
Old 05-25-2011, 10:26 AM
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Originally Posted by TwoValveKid
Placing an order with Scoggin Dickey today for the LS3 stroker...hopefully when i get it there will be someone with LS7 small bores ready

Any ideas on chamber size? or did i miss that in the thread..
Originally Posted by Jon@Texas-Speed
The first small run of castings are gone. Guys can place an order any time you are ready. We should have more castings in another week or two.

6-bolt castings are standard
70cc Chambers out of the box (milling is available)

$2399.99 - Stainless Valves
$2699.99 - Hollow-stem Valves
$2999.99 - Titanium Valves
+ $50 for PRC EHT Springs
+$225 for PRC .700" Springs

Jon
Here you go, chambers are 70cc.
Old 05-25-2011, 01:51 PM
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I knew it was here somewhere. lol. Thanks!
Old 05-26-2011, 01:50 PM
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All i need is flow numbers and port cc's and ill be in business with a customr cam
Old 05-26-2011, 07:00 PM
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IIRC.......... intake port was only 4 or 5 cc more than stock LS3
Old 05-26-2011, 08:44 PM
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These use an LS7 intake and rocker arms, correct?


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