Headers for 4 speed

[TimBarb]

Replacing the 305 Chevy engine with 350 in my 1981 Formula. Does anyone know of headers that will work without modification to the 4 speed linkage, z bar, and reverse column lock out assembly? Thanks!

[firebirdparts]

I don't, but it seems to me it's a Camaro question, and that actually is helpful.  Mechanically, the car is going to be a 1979 4-speed Camaro.  I actually googled it, but I didn't do very well with that.

Like for instance here be some informed opinions on this exact question:
https://nastyz28.com/threads/what-headers-will-fit-my-1978-z28.122244/

[Fbird]

dime a dozen.....pick your brand. inless you are going for super competition (hooker) or some other 1 7/8 primary....most anything will work. NOTE: you will need to remove a little a-arm brace from the lower crossmember ....if your is still there.
And YES it is now called a camaro (via the chevy power)

[TimBarb]

Thanks for the replies guys. I researched all of the usual sites and brands and almost all state that the reverse lock out assembly would have to be removed to clear the header. mmmmmm, maybe I could confirm fitment with a call to the supplier. - thanks for the input. Unfortunately the Chevy 305 was the only engine available with the 4 speed in 1981. - And yes I always have to list the vehicle as a camaro when searching for mechanical parts. 🤨

[81Blackbird]

Have you thought about Shorty headers?  Not sure if that would give you more room for the linkage or not but worth a look.

[Savage Larry]

Check Hedman. I have their headers for my Pontiac 400 and they clear the reverse lock out linkage. Not sure if they do the same for Chevy engine

[TimBarb]

Yep— checked on the shorties and mid length headers too 81 Blackbird.- They cleared the lockout assembly but had lots of other problems. Savage Larry may have the answer on this one— the majority of the user reviews included comments like “ best fitting headers I have ever used, and “ I was able to install without removing the reverse lock out assembly.— a few more indicated they had to slightly modify one of the column rods a bit...... So it looks like I will be giving the Hedmans a try. I’ll post the results. Thanks to all the experts that posted solutions . You guys are the reason I joined this group!