What cylinder head is this.....
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From: Port Tobacco, MD
What cylinder head is this..... Could these be Callies new LS1 heads?????????
Full story:
http://forums.corvetteforum.com/showthread.php?t=996731
Full story:
http://forums.corvetteforum.com/showthread.php?t=996731
Last edited by Phil99vette; Jan 21, 2005 at 03:31 PM.
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
Nate
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
Mike Norris
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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
Mike Norris
Speaking of PRI.............where were ya??? First year we haven't run into one another!
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Brett Foote
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Joined: Jul 2004
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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
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
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
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
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
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
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?
Personally I feel that an engine dyno will provide a clearer answer and that may take some time.
Richard
w2w