Chev1979 350 exhaust man. question

[zuk88]

My passenger side manifold has that heat riser valve which keeps leaking so I'm looking at a different year to eliminate that. A 89 has a different style with an exhaust donut but looks similar , has any one switched before or is there a better year manifold to use?

 

[zukkev]

I've run headers on all my sbc stuff in the past..my 1975 stock manifolds did not have any heat riser crap attached to the manifold...

 

[JAWS]

Its possable to cut out the flapper in the heat riser and weld up the hole... But since manifolds for SBC are cheap and usually easy to replace.. I would go the route you are. With a completly different manifold..

 

[99redtj]

Get a earlier year manifold that doesn't that crap.my 84 has that crap

 

[zuk88]

The 89 didn't have that valve. If I get one from auto and it doesn't work they will refund it.