Best 23' SBC head?

Guest · Post by **Guest** » Thu Jun 24, 2004 11:27 am

for 400ci and 6500rpm. Thanks

Guest · Post by **Guest** » Thu Jun 24, 2004 1:23 pm

Street/Strip
Gasoline
4000-6500

Thanks

tk · Post by tk » Thu Jun 24, 2004 8:37 pm

cstraub wrote:My choice would be an Iron sportsman II with 64 cc chambers. Mild clean up, good performance valve job and the head makes alot of bang for the buck.

If you prefer alum. I would go with the small canfield. Alot of bang for the buck.

Chris

I agree or Dart Iron Eagle are very simular too.

Racer7088 · Post by **Racer7088** » Thu Jun 24, 2004 11:23 pm

I would say 23 degree RR Pro Actions if you have to use 23 degree heads.

Also the AFR 227 is pretty good for a regular port 23 degree.

Racer7088 · Post by **Racer7088** » Thu Jun 24, 2004 11:27 pm

Oops,

didn't see the only 6500 rpm but these heads would still be great with smaller cams. You could certainly use a 200-220 cc Pro Action too for a lower performance engine like that with some clean up and a larger cam.

speedtalk · Post by **speedtalk** » Fri Jun 25, 2004 12:34 am

Hey Erik,
Thanks for joining the forum.

tk · Post by tk » Fri Jun 25, 2004 7:38 am

Racer7088 wrote:I would say 23 degree RR Pro Actions if you have to use 23 degree heads.
.

I've never worked on Pro Action heads since my main stream is imports around here.

Is it true they can flow up to 420+ cfm and if so with what size valve?

I think they make a head for Honda's too

Thanks

sw · Post by sw » Fri Jun 25, 2004 2:56 pm

Just spent all day on the dyno with a combo that is very similar to what you are looking for. We used the pro-topline 200cc aluminum heads.With port work these things were amazing. Better than any 200cc head I have ever seen.This motor, with a little over 9-1 comp. made over 400 ft lbs from 2600-6300 with peek torque of 517@4600 and peek power of 518@5800. It held power above 500 to 6300 and still had 486 at 6600.We were pretty pleased with the results. It idles at 750rpm and is really crisp. The motor is getting shipped to Peru, so we might not get any track results right away.Does this kind of fit what your looking for?
TK, yes, those big rolled over protoplines will go over 400cfm. Like anything else, people want to stretch the numbers some, but they are a killer head and make great power.
Shawn

Racer7088 · Post by **Racer7088** » Tue Jun 29, 2004 11:06 pm

Thanks Don. It's good to be here!

There are some race versions of SBC heads that Pro-Topline makes that go over 400 cfm for large circle track and sprint car engines like their 14 degree heads and their other 11-13 degree stuff too but they're far from the 23 degree!

Racer7088 · Post by **Racer7088** » Tue Jun 29, 2004 11:17 pm

Chris, everyone says that but several people have told me someone else is buying them out or something?

dirtnap · Post by **dirtnap** » Wed Jun 30, 2004 12:54 am

A&A Midwest ,Enginequest has got ahold of that deal after all the legal troubles.I think its going to be called EQ Lightning .

Guest · Post by **Guest** » Wed Jun 30, 2004 3:21 pm

Wow well that really sucks!

SW · Post by SW » Wed Jun 30, 2004 6:27 pm

Any word on what is going to happen to all the molds and equipment? Will it be auctioned off?
Shawn

SW · Post by SW » Wed Jun 30, 2004 6:42 pm

Any word on what is going to happen to all the molds and equipment? Will it be auctioned off?
Shawn