Looking for parts to rebuild/restore the 250 cid OHC six-cylinder in my ’68 Firebird? Anyone know a good source of parts for this engine? What about putting a four-barrel manifold and carb to put on while I’m doing this.  

http://primatechmotorsports.com is the best place to find NOS, rebuilt, and newly engineered parts for the unique OHC.  

I have a copletely rebuilt 1969 OHC6 4bbl out of a firebird sprint. Everything new (crank,cam,pistons,bearings,belt,etc...)with matching belhousing 4 speed trans and shifter. Iended up using a pontiac 350 with a turbo 350 trans. Many parts left over some used some new. Trying to clear out garage.If you need additional info you can reach me on my cell at 240-422-1926 Bert (Maryland).I'm new to this site so I'm not sure about the process of contacting other members.