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Indy Head vs Edelbrock Head crossover point

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jcisworthy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Sep/30/2018 at 8:45pm
I will have some numbers on a set of NHRA Edelbrock heads with a 2.100 intake valve in a week or so
Specializing in engine building and cylinder head porting

https://rbjracing1.wixsite.com/website
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Sep/30/2018 at 9:25pm
Originally posted by kingsX kingsX wrote:

Street/strip car. Stroker crank kit John got for us. Ported Indy heads flowing around 330 IIRC, .630 lift cam, 4 bolt mains, extra head bolts, vortec V3 blower using Bulltear serpentine supercharger brackets, Fitech EFI running E85, American racing headers 1 7/8” primaries. Should be a monster!!

I’m not sure he’s compared numbers he’s got off the Eddy heads to what he got out of mine. He just said it took a ton of work on the Indy’s. I think if your not going to add the extra head bolts you’re just as good going with the Eddy’s.


Yeah that's a little more that what I have in mind LOL

Thanks for the specs, my build will be a walk in the park compared to that. Clap

Can't wait to see it in action Smile
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was Green/green now T/A red w/blk leather

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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Sep/30/2018 at 9:35pm
Originally posted by jcisworthy jcisworthy wrote:

Indy heads have more raw power potential because of the CSA is larger compared to the Edelbrock heads but the work it takes to make them into a real good set of heads is pretty extensive. 

In my case they peaked out around mid 320's with a stock entrance which is a decent number but with a runner and valve that size, its not steller. 

I think the Edelbrock heads will move more average air than the Indy heads with a stock entrance, 2.100 valve and have more velocity due to the smaller runner which can make them potentially better for everything but all out builds

The Indy heads have a lot of modification potential out of the box. 

The application will be the biggest factor for which one is best


Great explanation John,
 thank you.

I've wanted Indy's for this build, but maybe I should re-think it.

 NA Street-strip car, something fun that's not afraid of RPM's, maybe with the UR-18, or HLR intake on it just for fun.
 Not looking for a .630 cam or an E85 build tho.

71 Javelin AMX P-code Go pac 360/4spd/3.91's
was Green/green now T/A red w/blk leather

88,89&98 Jeeps
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klvn8r View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote klvn8r Quote  Post ReplyReply Direct Link To This Post Posted: Oct/02/2018 at 9:36pm
In 2000, I bought what was said to be the first Indy heads in Texas. Back then, I was part of a group who had petitioned Edelbrock, with a "no thanks", reply. So yes, I bought while I could, and don't regret it. My 401 is 10.5:1, a solid lifter Crower,1 3/4" Hookers, an 830 dp Holley on an AirGap. Real dyno figures of 446 hp and 486 lb.ft on 93 octane. 12.70s at 110 on 235/60s true street tires. Richmond six speed and 2.73s. Yes, 110 mph in third gear. Runs great at 80 on the highway. Hope this helps.

klvn8r
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