Mopar exhaust manifolds

[ram250098]

I am thinking about going back to the stock manifolds since my headmans are beat to crap. What years would be best for fitment and flow....I 68/69 ish?
Also are the A body and B body and E body interchangable when it comes to the discharge location, don't want to rush in and buy something I can't use LOL
Thanks

 

[racedodge]

all of them are rear dumps unless you get manifolds from a truck. As far as best performance and fit for a small block, dude I wish I could help you but I am not a SB guy so I have not done the research at all.

 

[ram250098]

Thanks racedodge I was more looking at the angle of the dump I have looked at so many now it is hard to tell what will fit and won't fit LOL.
AL

 

[moparmarks]

The easiest and cheapest factory ones to find will be the correct 71-4 B/E 3418621/623. The 623 also fits 71-3 A-body.
I may have some 623 but think I'm out of the 621

 

[ram250098]

Thanks Mark I have seen a bunch of those, but I hear the hp flows much better. I have seen a local ad for a pair from a 68? for $400. I figures a good set of headers would be around the same $$ and won't worry about getting my tubes flatend....LOL
AL

 

[beezee]

Hey Al, Beer break, take a run to Frank,s and check the Dart, has the 340 with manifolds that was in the 74 Charger.

 

[ram250098]

Maybe that is why his performance is not what it should be...NO FLOW... LOL.
I talked to Lee at penastar out in Dundalk he has a set for $400 from a 68 I might just bite the bullet and get them.
AL

 

[moparmarks]

68's are going to be the A-body style which is different mainly with the drivers side. Not sure how it will fit your later B. Yes those are way more money. The 71-4 style run about 250.00 for the late 70 and early 71 dates. After that the price goes down.

 

[moparmarks]

Thanks Mark I have seen a bunch of those, but I hear the hp flows much better. AL

These are the 71-4B/E 340 hp's. Also used on 71-up 360 C-bodies. These have bigger ports than the 318 ones that look the same.