[TMC]

Has anybody used these? They have 180cc and 200cc intake heads. Both are iron and the propaganda says they weigh 50 pounds less than stock heads.

There are just too many choices for performance parts?!?!

 

[Todd]

They are World heads that have been reworked a little for better flow numbers.

But I can't imagine that one set of iron heads is going to weigh 50 lbs lighter than another.

I have edelbrock heads and they only weigh about 40-45 lbs lighter than stock heads.

I would say for the money the edelbrock are best for reliability and hp gain and the factory like fit.

 

[TMC]

Todd, do you have the RPM or plain Performer 5.0 heads and what size valves, 1.94 or 2.02?

Thanks

 

[Todd]

I have the 1.90's with the 2.02 you have to notch the pistons, so I went with the smaller ones. I saw some figures on both and the 2.02 heads don't pick up until .500 lift, and even then they don't win by a large margin it was around 235 vs 240 and the exhaust was the same on both 175ish.

And I got the performers with the pedestal mount
6037 is the number I think.