Moparts

Porting 516 Heads

Posted By: DusTed74

Porting 516 Heads - 08/09/10 12:09 AM

Has anyone ever ported a set of 516 heads using the Mopar templates? If so what were your results?

Thanks in advance..........Ted
Posted By: bobby66

Re: Porting 516 Heads - 08/09/10 12:48 AM

There used to be a long and informative post in the archives dealing with ported 516 and 906 heads. Lot of interesting reading in that one if it's still around. Dwayne Porter wrote it, IIRC.
Posted By: Mr.Yuck

Re: Porting 516 Heads - 08/09/10 01:25 AM

no idea how to do it, but I have 516's with 2.14/1.81's and the flow really well. I have the numbers in the garage but I think it's like 270/190 @ .500
Posted By: therocks

Re: Porting 516 Heads - 08/09/10 01:27 AM

Yuck I had a set also.Mine were reworked some with the ports and bigger valves.I know my machinist said you had to be careful with the bigger valves and the porting.He was doing a set and hit water.Mine were great and now reside on my kids 62 300.I went Stealths.Rocky
Posted By: R/T1968R/T

Re: Porting 516 Heads - 08/09/10 03:58 PM

The templates worked fine. I did a set a while ago. First I had the machine shop do a 75 degree throat cut in the pockets. a lot of metal came out and saved me work. Install a 1.74 exhaust valve. Those heads are 84cc from the factory, will give you a slight increase in compression, but you can use them for a quench motor build. Put in on paper first. If it cost too much there are better options!
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