opinions of any cylinders used on a 305.please include other mods and info on the rest of the engine. cam, bottom end, intake

thanks

EDIT...this includes aftermarket heads..

 

The ones you have are about as good as they get. Should be 416s. Same casting as LG4, Cross-Fire, etc. in all cars including Caprice, Monte Carlo, Cutlass, etc., and the 85-86 TPI 305s.

 

Ported World S/R Torquer 305's are slightly better than ported 416's or 601's.

I went with the Worlds because they start out as performance-oriented heads (rather than mass production) with thicker deck, 1.94" intake valves, and screw-in rocker studs; and I wanted to reduce down-time for the upgrade process. They do need some basic bowl-area porting to begin to realize their potential, though.

 

I would think the LB9s on the newer TPIs would be better than those.

 

They're about the same. Except that the older ones are a hell of alot easier to find.

 

any vortec opinions from someone who used them on a 305

 

They work great for me.

 

no to stray off topic, but if you consider the cost of buying a good set of heads then porting them, you may want to consider a healthy used 350. Cubes=Power I looked into building my 305 and IMHO it's not worth it. For the cost of building it up I can find a rebuilt 350 and then have a much stronger starting point.

-Z-

 

they i have to worry about the exploding t-5 from the torque.

 

:shrug: you can blow up a t-5 just as easily with a 305.... i don't see how that is a valid point.

 

sorry its not..its just the first thing that comes to mind when i think of a 350...the second would be why fix something if it isnt broken..my bottom end has 83,000 miles on it..im not looking to build a race car just a quick street car...besides by the time i swap the motor i will still want a decent set of heads.

 

Then don't get heads that are ideal for a 305.

 

And both of these points bring me back to my original point of "Built 305" vs "Rebuilt 350"-- My T5 is in rough shape and has only had the stock non-HO 305 put through it. 120 horse, I think. Any engine can damage a tranny if enough burn outs are logged. I'm not building a strip car either, just something w/some cajones. And it's easier to build a 350 than a 305, because you start off stronger with more cubic inches. Good 350 heads can work on a 305 and vice versa, it's just in the tuning and the carb setting yadayada..... but my point is that if money happens to be a factor, it's better spent on the overall package rather than picking a single part of an already weak combination to beef up.

-Z-