496 AFR 290's. - Chevelle Tech
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post #1 of 46 (permalink) Old Jan 11th, 12, 11:18 PM Thread Starter
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Reed.
 
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496 AFR 290's.

93 octane pump gas bought at the local Racetrac...



a little video..

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post #2 of 46 (permalink) Old Jan 11th, 12, 11:32 PM
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Re: 496 AFR 290's.

Nice!
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post #3 of 46 (permalink) Old Jan 11th, 12, 11:34 PM
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Chris
 
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Re: 496 AFR 290's.

Wow great numbers. Gotta love the 290's. What size cam do you have? Infact, got some detailed specs?
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post #4 of 46 (permalink) Old Jan 11th, 12, 11:46 PM Thread Starter
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Re: 496 AFR 290's.

pretty basic combo, off the shelf Scat 4340 profiled crank, Scat 6.385 H beams, SRP#212157 pistons, Moroso windage tray, Milodon Chevelle pan. 1989 .060 454 block, ARP main studs, mains line honed. Cometic head gaskets, ARP head studs. Oval port Weiand Team G ported to the heads. Holley ultra HP 1050 Dominator reworked from Racecraft Racing Carburetor's. Cam is a custom Comp solid roller .726in/.705ex, 252in/258ex @.050. This thing idles like a Cadillac, but revs like a pro stock..very happy with it!!
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post #5 of 46 (permalink) Old Jan 11th, 12, 11:50 PM
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Re: 496 AFR 290's.

Very nice
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post #6 of 46 (permalink) Old Jan 12th, 12, 12:23 AM
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Re: 496 AFR 290's.

Wow...Impressive numbers...Sweet

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post #7 of 46 (permalink) Old Jan 12th, 12, 12:25 AM Thread Starter
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Re: 496 AFR 290's.

thanks guys! As I'm sure most on this forum know Mike Lewis at Wolfplace is a great guy to deal with and was able to price these heads well under what most others sell them for as well as answer a number of I'm sure annoying technical questions for me. Chris Straub who is also one of the best on here gave me the hook up on a Bullet cam, Romac Rollmaster Gold series chain and GS Ultra Pro solid rollers. He also answered the numerous phone calls from me concerning this build, again great guys to deal with!
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post #8 of 46 (permalink) Old Jan 12th, 12, 12:28 AM
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Re: 496 AFR 290's.

That's sweet. What did final compression end up at? What is the cam LSA?


What's it going in?



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post #9 of 46 (permalink) Old Jan 12th, 12, 12:31 AM
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Re: 496 AFR 290's.

Yes they are a couple of good dudes & certainly put up with alot with all of our question! Very nice build...congrats

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post #10 of 46 (permalink) Old Jan 12th, 12, 12:42 AM
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Re: 496 AFR 290's.

Nice numbers, but what's up with the torque?

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post #11 of 46 (permalink) Old Jan 12th, 12, 12:49 AM Thread Starter
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Re: 496 AFR 290's.

Quote:
Originally Posted by 540Hotrod View Post
That's sweet. What did final compression end up at? What is the cam LSA?


What's it going in?



JIM
10.7 was the final on that. The cam is a 4/7 swap with 110+4 LSA. Its going in my day2 style 67 Chevelle...
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post #12 of 46 (permalink) Old Jan 12th, 12, 12:51 AM Thread Starter
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Re: 496 AFR 290's.

Quote:
Originally Posted by steelcomp View Post
Nice numbers, but what's up with the torque?
good question.. kinda walks around on there. I saw that after the final pull.
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post #13 of 46 (permalink) Old Jan 12th, 12, 2:08 AM
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Re: 496 AFR 290's.

Hi Reed
Thanks, glad we could help a little
Looks nice but something is really goofy with that torque, almost looks like the dyno was loading & unloading the engine?

What was the weather like on the day you tested?

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post #14 of 46 (permalink) Old Jan 12th, 12, 4:39 AM
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Re: 496 AFR 290's.

Quote:
Originally Posted by X--B/MP67SS View Post
thanks guys! As I'm sure most on this forum know Mike Lewis at Wolfplace is a great guy to deal with and was able to price these heads well under what most others sell them for as well as answer a number of I'm sure annoying technical questions for me. Chris Straub who is also one of the best on here gave me the hook up on a Bullet cam, Romac Rollmaster Gold series chain and GS Ultra Pro solid rollers. He also answered the numerous phone calls from me concerning this build, again great guys to deal with!
I am thinking "Wow those are some great numbers. We have got a new player here at team chevelle. I got some questions for this guy." Then I read Mike Lewis and Chris Straub. All questions answered. mark
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post #15 of 46 (permalink) Old Jan 12th, 12, 7:47 AM
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Re: 496 AFR 290's.

Quote:
Originally Posted by steelcomp View Post
Nice numbers, but what's up with the torque?
It moves around a little, but seems like a really broad, relatively flat, quite impressive, torque curve.

My amateur eyes thought nothing bad about it until you guys mentioned it.

Could you experts elaborate? Inquiring minds want to know.

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