New Cylinder Heads
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Joined: Aug 2009
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New Cylinder Heads
So my 383 shortblock is complete and I need to decide on a set of aluminum heads to buy. I have a 268h comp cam and edelbrock performer intake. Budget is around 1200 dollars and I am shooting to hit 400hp if possible. I have my eye set on these trick flow 23s http://www.summitracing.com/parts/TFS-30400002/
any suggestions or recommondations? Edelbrock performer rpm heads look pretty good as well.
any suggestions or recommondations? Edelbrock performer rpm heads look pretty good as well.
Racer
Joined: Aug 2006
Posts: 330
Likes: 3
From: Wellington, New Zealand
I went with the edelbrock 60739 (70cc) rpm heads, most people choose the 64cc version rather than the 70cc but looking at the flow rates on edelbrocks web site, the 70cc heads flow better than the 64cc heads. The larger chamber un-shrouds the valves better and allows better flow. Compression ratio can be brought up by using a slightly dommed piston if you wish to get in to the 10:1 ratio zone, with a flat top piston a 70cc head will put you in the 9.6:1 area.
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
AFR 195 Eliminator's. $1464 at Summit.
Talked to a guy at car show on Saturday. 383 with a 230ish hyd roller cam. Turbo 400 tranny. Went from 330 rear wheel hp to 370 rear wheel hp just by swapping from the old AFR 195's to the new AFR 195's.
Worth the $$$ IMHO.
Talked to a guy at car show on Saturday. 383 with a 230ish hyd roller cam. Turbo 400 tranny. Went from 330 rear wheel hp to 370 rear wheel hp just by swapping from the old AFR 195's to the new AFR 195's.
Worth the $$$ IMHO.
Drifting
Joined: Nov 2003
Posts: 1,874
Likes: 7
From: l In
Melting Slicks
Joined: Apr 1999
Posts: 2,010
Likes: 3
From: Moon Twp. PA USA
So my 383 shortblock is complete and I need to decide on a set of aluminum heads to buy. I have a 268h comp cam and edelbrock performer intake. Budget is around 1200 dollars and I am shooting to hit 400hp if possible. I have my eye set on these trick flow 23s http://www.summitracing.com/parts/TFS-30400002/
any suggestions or recommondations? Edelbrock performer rpm heads look pretty good as well.
any suggestions or recommondations? Edelbrock performer rpm heads look pretty good as well.
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Le Mans Master
Joined: Mar 2000
Posts: 8,950
Likes: 4
From: Lafayette LA
I had a set of the first generation Trick Flow twist wedge heads that I bought around 1996. Back then, they were $795 complete and new from Summit. No one knew who Trick Flow was either. Jegs didn't sell them. They were flat-out awesome heads. That's the only experience I have with TF.
I currently have a used and complete set of GMPP Fastburn heads for sale. PM me if interested.
I currently have a used and complete set of GMPP Fastburn heads for sale. PM me if interested.
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
Trick Flow 23* heads are good....they wake up with a port job and can easily support 500hp with the right cam...not a bad choic....
AFR 195 eliminators and a better matching cam....you will make way more then 400hp....probably more like 450hp with a mild cam...500+ with a decent sized hyd roller.
I believe Makoshark 72 had a NEW set of GM Fastburn heads for sale in the C3 Parts section....those would work well....
A 268H (if it is the old school comp 268h) is a TINY cam for a 383.....if that is the final choice on the cam....don't worry about spending too much money on the heads as it would be lucky to make 350-375hp with that cam.... Maybe just throw some Edelbrock RPM heads or something cheap on there....maybe some Vortecs....you could build a torque monster with Vortecs, 383" and that cam...
If you are sticking to a hyd flat cam....maybe something like this would get you in the 450-475hp range....
http://www.lunatipower.com/Product.aspx?id=1985&gid=287
If you are wanting something more mild in a "268" style cam, maybe this one would still allow that 383 to breath....some...
http://www.lunatipower.com/Product.aspx?id=1984&gid=287
This one ^^^ would be very mild, and still make way more power then the comp 268h.....
Just thinking out loud here...
AFR 195 eliminators and a better matching cam....you will make way more then 400hp....probably more like 450hp with a mild cam...500+ with a decent sized hyd roller.
I believe Makoshark 72 had a NEW set of GM Fastburn heads for sale in the C3 Parts section....those would work well....
A 268H (if it is the old school comp 268h) is a TINY cam for a 383.....if that is the final choice on the cam....don't worry about spending too much money on the heads as it would be lucky to make 350-375hp with that cam.... Maybe just throw some Edelbrock RPM heads or something cheap on there....maybe some Vortecs....you could build a torque monster with Vortecs, 383" and that cam...
If you are sticking to a hyd flat cam....maybe something like this would get you in the 450-475hp range....
http://www.lunatipower.com/Product.aspx?id=1985&gid=287
If you are wanting something more mild in a "268" style cam, maybe this one would still allow that 383 to breath....some...
http://www.lunatipower.com/Product.aspx?id=1984&gid=287
This one ^^^ would be very mild, and still make way more power then the comp 268h.....
Just thinking out loud here...
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
They don't belong on a mild 350ci anymore, these are serious heads
