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What cylinder head is this.....

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Old 01-21-2005, 02:44 PM
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Default What cylinder head is this.....

Could these be Callies new LS1 heads?????????

Full story:
http://forums.corvetteforum.com/showthread.php?t=996731





Last edited by Phil99vette; 01-21-2005 at 03:31 PM.
Old 01-21-2005, 03:31 PM
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Doesn't Dart make a "All Pro" line of heads?

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Old 01-21-2005, 04:34 PM
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Damn...... looks like AFR just got biotch slapped by callies! Tony...... thats just a joke!

Those look great..... I want WAY more info and I wanna know when they are gunna be availible!

Josh S.
Old 01-21-2005, 06:37 PM
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HOLY CRAP!!! those look seriously nice...for an as cast head i can imagine quite a few porters who could make those some serious flowing heads. I'm guessing 345 and 285 could be acheived.

Nate
Old 01-21-2005, 07:27 PM
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Those are too purtty to put on a car!
Old 01-21-2005, 09:36 PM
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all pro is a company that makes some of the most badass sb heads around. a lot of people havent heard of them though.

Last edited by TrendSetter; 01-21-2005 at 10:05 PM.
Old 01-22-2005, 07:33 AM
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These heads were at the PRI trade show and yes, they are made by All-Pro and for now distributed bt Callies. All-Pro does some killer sprint car stuff and the design here is somewhat similar in thinking by the looks of things, like the runner size, port design, spring pockets size, rocker arm bosses, etc.. The intake runners are a big 237cc, and that is in as cast version, but flow numbers are down some for a port that big. After some work this may be a viable option for a heavy forced induction car or big cubes (427+) Hope this helps.

Mike Norris
Old 01-22-2005, 02:43 PM
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Originally Posted by Mike Norris
These heads were at the PRI trade show and yes, they are made by All-Pro and for now distributed bt Callies. All-Pro does some killer sprint car stuff and the design here is somewhat similar in thinking by the looks of things, like the runner size, port design, spring pockets size, rocker arm bosses, etc.. The intake runners are a big 237cc, and that is in as cast version, but flow numbers are down some for a port that big. After some work this may be a viable option for a heavy forced induction car or big cubes (427+) Hope this helps.

Mike Norris

Speaking of PRI.............where were ya??? First year we haven't run into one another!
Old 01-22-2005, 02:48 PM
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Any word on how big these runners can get before we'll run into water?
Old 01-22-2005, 07:24 PM
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Originally Posted by KingCrapBox
Any word on how big these runners can get before we'll run into water?
The coolant passages have been reduced leaving plenty of material for porting.
Old 01-22-2005, 08:40 PM
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Saw them at PRI also. They flow right at 300 cfm as cast. Guaranteed .250 thick walls, so plenty of room to port. Also, you can get them custom cast.
Old 01-22-2005, 11:58 PM
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As Mike said...the heads are cast, designed and manufactured by All-Pro. Their POTENTIAL is awesome. Speaking for myself, these guys are one of the ones I was waiting for before I invested too much time into R+D on aftermarket LS1 heads.

In my opinion, the majority of LS mods are based on (relatively speaking) limited components at this time. As of now, everyone gets the hint of the HP potential of this powerplant. But the majority of the aftermarket is focused on OEM components and rather conservative. All Pro has never been known to build heads for mass-market....They build heads for hardcore racers....Although I would like to see a few changes (especially in the chamber) I think they will prove in a very short time how to take the LS1 platform to an all new level. It's a shame ALLPro doesn't manufacture intakes at this time also....

I can't wait to see what this topic is like in 5 years....Life is good

Felber
Old 01-24-2005, 07:48 AM
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Hi Chris,

Yeah, pretty hectic which means it was a good show. I meant to call you ahead of time and find you out there, but you know how that goes. heading to Florida anytime soon? Give me a call. Later.

Mike Norris
Old 01-24-2005, 07:54 AM
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I think that these will turn out to be more of a DIY Guy head with a nasty all motor setup, or big power adder.

I do like that option, but I REALLY like to just bolt on a set of AFRs with the supporting mods and make 475 rwhp. Its the biggest No brainer since the LS1 came out
Old 02-17-2005, 06:35 PM
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Any word on these bad boys?
Old 02-17-2005, 07:18 PM
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Yay, another bandwagon for everyone to jump on!
Old 02-17-2005, 07:23 PM
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Beefy.
Maybe they will debut with the Edlebrock heads hahaha....
Something must have sent those guys back to the lab.
Old 04-18-2005, 05:44 PM
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An independant flow test comparing a set of these heads, a set of afr's and a set of as cast ls6 heads ( for comparison sake ) would be nice. Anyone?
Old 04-18-2005, 11:35 PM
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Originally Posted by JL ws-6
An independant flow test comparing a set of these heads, a set of afr's and a set of as cast ls6 heads ( for comparison sake ) would be nice. Anyone?
How best to equally prepare each head before testing? The AFR's are pretty small if purchased unfinished while the AllPro's are much larger. What bore size? What valve size? What valve manufacturer? Radius port entry or with an intake manifold? An exhaust tube or no tube?
Personally I feel that an engine dyno will provide a clearer answer and that may take some time.

Richard
Old 05-04-2005, 05:22 PM
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any of these heads on a running FI car yet?

mine are about a week away w2w



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