I was wondering if these heads where any good the number is 333882 there on my 1981 Z28 350.

I have a set of modifided 305 heads with a 1.94 intake would hey be better the the 882 heads?

 

They are tough heads, BUT they are smog heads that are normally found to be restrictive.

 

Mortec. com will have alot of info on casting numbers.

 

I have read good and bad about these heads.They are fairly prone to cracking if they are overheated,but I have read about people getting decent flow out of them with some work for on a street motor,but they are big chamber heads.There are some discussions about these heads at NastyZ28.com.You can search the website for them. They would be worth reading.

 

Thanxs for the replys I`m sure I`ll have a lot more questions to come since I just bought my 2nd gen

 

I pocket ported a set of 305 heads off an L69 years ago. I measured the ports and found the intakes were close to the ports of 041 heads (off a 70 SS 350) and the exausts were a little smaller. Heads went on a 350 and it ran like a champ. My brother now owns the 69 Camaro the engine ended up in, but my constant browbeating has not convinced him to hurry up and finish making the car road worthy (was parked for years) so we can take it to the track for times. Something about being too busy running his business.

I'd vote for the 305 heads to kick up your compression. That is if they are L69 type heads from the 80's.

 

I had "882" casting heads on the 383 in my '81 Z28, and my dad currently has them on the 355 in his '73. IMO, they seem to work fine? I mean, I know there are way better heads out there, but with flat-top pistons, and the ~76cc chambers they have, I think compression is somewhere around ~9.5:1 - 10:1, which is certainly enough compression to make some power. I had a .480"/.480" lift cam in the 383, and my dad is running a .471"/.488" solid cam, and the heads seem to flow well enough for those cams. I'm sure they could be P & P'd to make them flow better, but they're not total junk IMO.

Just my $.02.

 

^ I'm with stupid

 

good site for casting numbers ..

http://www.mortec.com/castnum.htm

 

Nice. Real nice. What did I ever do to deserve that?

(why I oughtta!!!!!!!! *shakes fist* )

 

hey captn pete .. too bad there isn't a muzzle option on this board huh ? ..

 

It's an avatar on most of the boards... I like it a lot, and I use it even when it's not available. I concur with what you say though.

L8erZ,
Extreme

 

extreme79z .. why would u call some one stupid ?? not very nice .. or is that the kinda guy u are ?