I'm thinking that for the money these heads would probably be the best bet. If your running them on your L98 is there anything extra needed, aside form new head gaskets. I'm basically wondering about the compatability/interchangeability with the originals. And lastly, if any of you run roller rockers were any mods needed to get them to function? Thanks.

 

No one here runs these heads?

 

I know they flow very well like 240cfm intake and like 185cfm exhaust or am I thinking of the Holley systemax? They should be compatable, I am not running these heads but hey it's BTT.

 

just my 2c, but i think, for how much extra it is, i'd get the twisted wedge heads... of course, then again, afr190's arent too much more... life's big delimma: finding where to limit yourself

 

Ive been running them for about a year. They came with guide plates and I am running 1.6 roller rockers on it.

------------------
Mark Lock
- 86 IROC-Z - SuperRammed 383/T56
- -= IROC Online =- - The site dedicated to the IROC-Z

 

IM using them on my 406,its still on the stand though. They flow 246-250 cfm on the intakes Out of the box. Thats without CNC porting... They are designed to bolt right in place of your stock heads. Best bang for the buck aluminum heads IMO.

I read a dyno test where they compared them to the Aluminum L98 heads. They made almost 50 more horsepower over the L98s on a mild 350. Alot of people on this board and others use them and like them.



------------------
Black 90 IROC, L98, A4, 323 gear. SuperRamed 406 in the works!

 

What re the differences between the 23* and the twisted wedge? I thought I heared that with the TWs you might need new pistons? Thanks.