Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Brian 89KBlazer, Mar 31, 2001.
On a 1989 TBI 350?? Are they 68cc, 72cc, 76cc,???
Best guess; 64cc.
I checked my fav catalog (G.M. Performance Parts) and looked for years, found p/n 10125377 cyl head. It is used on 285hp engines, has 1987 and latter intake bolt pattern
Check for a casting number 141013978 or 14096217, if you got those, then its a match (I think). Thats my best guess. Hope it helps.
Thanks Twiztid but their the stock 1989 350 TBI heads. I guess I'm the only one in the world who has those!!!
Come on!! Some one must know! I need to know so that I can order the right 383 stroker kit to end up with the right comp ratio.
Not sure about the 89's but I have a 90 adn my heads are 60cc. That may give you a ball park. Get the VIN and call the dealer adn ask them.
Will work for beer, parts and tools.
90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
<A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
Try calling a dealer for the cyl head p/n, I don't know if they can get a cc rating on their data base, but it might help chase it down. I would think its close to those 64cc heads (above)
I have a GM parts book that says 87 up heads are 64cc.
your right. I don't understand the jeep thing!
I am including this only because you are building a 383...those heads suck. i thinkyou would be much better served by heads that are capable of supplying the power that the 383 can supply. I posted that there is now a TBI vortec intake, and with that, you could run Vortec heads. Not sure if you already have TBI, if all you need is the intake or not...
Just seems like a waste to build a 383 and have it restricted by crappy heads. IMO
My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
Separate names with a comma.