[ylwgto]

I have full length Hedman headers and switched to a mini starter decades ago...got tired of bashin my heat-siezed original starter with a hammer to allow me to get the car running. I also run a remote starter solenoid (a-la-Ford) mounted on the inner fender.

There is still very little room and my rag joint contacts the header when reversing and they make AT removal and oil filter changes epically difficult (not for long on the latter, installing a remote filter relocation in the Spring), but they will stay on for the time being (and I love the tinny sound they make up front).

 

[GrandTO]

Some reliable sources Support RAR's claim that they are similar castings to the classic RA repros offered through Ames and other sources. Except, the castings are basically ported and do have better flow numbers than the bare casting offerings. Many of the websites list both as being available until you place in your cart and place order than they are placed in backorder status. You're probably right about the casting location. Just got off the phone with A.P.E. and was told the classic repro's were cast oversees. RAR makes no claim they are cast here, just porting process.

 

[Baaad65]

FWIW saw a pair of new aftermarket 2.5" HO round port exhaust manifolds 68'-72' on eBay for 795.00 plus 40.00 shipping.

 

[Baaad65]

Just curious has anyone heard of or done a porting job on ram air exhaust manifolds to try and get the most out of them or is it even possible or worth it? I've heard of port matching them.

 

[PontiacJim]

Just curious has anyone heard of or done a porting job on ram air exhaust manifolds to try and get the most out of them or is it even possible or worth it? I've heard of port matching them.

If you get the RAR manifolds, not much needs to be done on those. The other brands might benefit slightly.

Warning: DO NOT port match the cylinder head to the headers. Many headers have ports that are larger than the ports on the head. This design helps resist the reverse flow of exhaust.

 

['65 Lamnas]

Just curious has anyone heard of or done a porting job on ram air exhaust manifolds to try and get the most out of them or is it even possible or worth it? I've heard of port matching them.

You should reach out to the guys that run their cars in F.A.S.T. I bet they port them in key areas and use extrude honing, etc.

 

[Baaad65]

Just from looking at those round port exhaust manifolds on ebay the guy dropped them to 750.00 from 795.00....wish I had round port heads to go with them 😉

 

[O52]

Buy them now in the event you do find a set of heads.

 

[Baaad65]

Buy them now in the event you do find a set of heads.

I wish but I'm extended to much already after this last year and the rear end, I just look around and day dream if money were no object sometimes, but they sure would go nice on a set of KRE high ports and a 488 below 😁