427 SBC dyno test with 245 AIRWOLF heads

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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by revolutionary »

1bossnova wrote:
revolutionary wrote:Looks good. How long was that second sweep? Seemed like it was there forever!
the dyno sheet said 11.1 seconds
Trying to wring every bit out of the dyno sheet, eh? Just curious if you ran it on a 600rpm/sec sweep and how much it lost.
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by redsmokin57 »

Bringing this post back up again as I'm looking for a set of heads for a simillar build, Want to stay with 23* heads and these look to be some of the bigger ones available off the shelf so to speak. Wanting to know any more thoughts on this build or from anyone else running these airwolf 245's
Just recieved a Shp Pro block from over there and while our dollar is still good want to organise the top end. Will run compstar 3.875 stroke X 4.125 6" sj rods and 14.5:1 comp with CP pistons if using these heads as I beleive they have a part no. to suit. will run on E85, and like this build will try my 4150 on super vic first before trying the Dom. set up.
Cheers Steve
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by rocketmanpj »

I just caught this. I'm curious on the headers, can you post the lengths of the sections. I'd assume that with that power band the primary tubes were close to 30"?
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by A Atwood »

redsmokin57 wrote:Will run compstar 3.875 stroke X 4.125 6" sj rods Cheers Steve
I didn't think the Compstar crank you refer to was available in the sj (2.0"). I wish they did though. Would make putting a 3.875 stroke into a SBC a piece of cake. Clearances would almost be the same as a 3.75 stroke with 2.100 rods. Rod to cam clearance would virtually be the same as a standard 400 set up (would only be .0125" closer).

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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by PWMAX »

simply have it or grind it to the sj size. Thats what I do. Have done it numerous times. Last 421 I built, I used a scat 4340 3.875 stroke. Had it ground to standard sj size. For that very reason. I have also used Compstar comet ultra light cranks, 3.75 lg, offset ground to 2 inch, and 3.840 stroke. One of them is in a 900+hp 422 inch Sb2.2 drag deal. 3 seasons, still going.

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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by A Atwood »

PWMAX wrote:simply have it or grind it to the sj size. Thats what I do. Have done it numerous times. Last 421 I built, I used a scat 4340 3.875 stroke. Had it ground to standard sj size. For that very reason. I have also used Compstar comet ultra light cranks, 3.75 lg, offset ground to 2 inch, and 3.840 stroke. One of them is in a 900+hp 422 inch Sb2.2 drag deal. 3 seasons, still going.

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What about the surface hardening?

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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by A Atwood »

I don't understand why no one offers such a crankshaft. It seems like the perfect crank for a SBC. I would also like to see it with a one piece seal for the SHP block build.

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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by bigjoe1 »

Most steel rods use the same bolt spacing for the 2.00 and the 2.100 bore size, so you would not see any gain in clearance


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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by A Atwood »

The Comstar rods do give the extra clearance. I measured them.
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by levisnteeshirt »

comp star has a small body , small journal rod ,,,, RPM makes a 5.85 I beam rod for a 4.6 thats 2.0 journal ,, looks like the pin end might need changed to .927 , shouldn't be too much i don't think ,,
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by redsmokin57 »

Still yet to decide on crank,3.75 or 3.875,either way if not 2" pin then will get ground, not yet used the sm jnl compstar rods but if I have read older posts correct, they are machined smaller with the shorter 1.4 length bolt.
But back to my most pressing question, about these heads, trolling the net I can't find a lot of builds using them even though they sound ideal for the larger ci builds. And looking through the complete build on this 427 in the magazines, seems it to be a fairly straight forward sort of build, yet 820HP seems quite impresive, all in the heads and manifold?
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by KnightEngines »

The manifold is the problem, you either port the crap out of a super vic or maybe look at the new profiler intakes or the AFR plastic one.
Other than the AFR composite intake there is almost nothing available that'll get the job done without a lot of work.
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by BrazilianZ28Camaro »

KnightEngines wrote:The manifold is the problem, you either port the crap out of a super vic or maybe look at the new profiler intakes or the AFR plastic one.
Other than the AFR composite intake there is almost nothing available that'll get the job done without a lot of work.

Edelbrock Victor Ram comes to mind :D

Should be plenty :mrgreen:
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by Fatman »

KnightEngines wrote:The manifold is the problem, you either port the crap out of a super vic or maybe look at the new profiler intakes or the AFR plastic one.
Other than the AFR composite intake there is almost nothing available that'll get the job done without a lot of work.

What results have you seen from the AFR manifold?

What is the new Profiler intake? Any info online. I have searched but not found anything.
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Re: 427 SBC dyno test with 245 AIRWOLF heads

Post by AA Performance »

Just curious but what are you guys seeing in the AFR composite intake? To me it doesn"t look like it is suited to a big cube SBC. Plenum doesn't look any larger than a super Vic either. What am I missing?
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