Posted By: 65rbdodge
sb exhaust manifold outlet size? - 09/14/08 02:35 PM
are there any sb exhaust manifols that have 2.25" outlets? i have a one magnum one that has 2.25 and the other has 2". i think they are off different years though.
sb exhaust manifold outlet size?
Posted By: ademon
Re: sb exhaust manifold outlet size? - 09/14/08 03:11 PM
I know the HP manifolds on my 71 demon 340 are like 2.25" on the driver side and around 2" pass side. 
Posted By: RapidRobert
Re: sb exhaust manifold outlet size? - 09/14/08 04:14 PM
68-70 340 HP ex manifolds 2&1/4"
Posted By: YO7_A66
Re: sb exhaust manifold outlet size? - 09/14/08 04:26 PM
I agree with Rapid, the HP's are 2-1/4" outlets.