Anyone playing with or using the new Pond High Riser head yet ?

[e philpott]

The modern chamber I'm pretty sure could be already " IN " there like Dove heads were , it would be a matter of not having it machined out to factory spec's or it least it looks like a machined chamber instead of cast to me anyways without knowing more about

[Joey120373]

Good point, it does look like a machined chamber, just like the originals. I suppose it’s entirely possible that there is enough meat in the casting prior to final machining that just about any sham we could be cut in there.

Like you said, need more info really.

I also understand why he is sticking to that design, and though it seems silly to me to make any head without a modern chamber, I’m not the one investing untold thousands of dollars.

The more I think about it, the less the chamber design bothers me. would I prefer a modern chamber, yes, should the lack of one keep me from building a HR motor..... he’ll no.

Would love to hear more info on these heads, flow rates, port volumes, engine dyno data.
I am sure most of it would not be relatable to anything I would ever build, as has been said, I’m guessing most of these heads are going on dedicated race engines. But if they are ~ 350 CFM OOTB, should be some really cool 750-800 hp engines out there . 

[Katz427]

If you look closely, you can tell the chamber is more of a "D" shape with more quench than a normal hi riser. I was told the spark plug position was moved slightly, to allow a better exhaust port for one, but also "stands" the spark plug up straighter. These heads were designed for the T-bolt, guys mainly, as something that the NHRA rules would accept as a replacement head. The person who relayed this information to me also said for a " no rules restriction " build that "he" would be seriously looking at Jay Brown's heads, ( which he saw at PRI ). He obviously liked what he saw.

[cjshaker]

If you look closely, you can tell the chamber is more of a "D" shape with more quench than a normal hi riser. I was told the spark plug position was moved slightly, to allow a better exhaust port for one, but also "stands" the spark plug up straighter. These heads were designed for the T-bolt, guys mainly, as something that the NHRA rules would accept as a replacement head.

If you look close, there are lots of refinements to the HR head design, and yes, that chamber is canted and not exactly "stock". I would guess that the chamber is rough cast like that, before final machining, to save on aluminum. And I can guarantee that Pond doesn't care if anyone else likes it; that was not his intention when designing it. It is purely for NHRA purposes. It will be interesting to see what Mr. Pond and Mr. Paquet can do with them. I'm curious if there's a weight penalty to go along with them.

[e philpott]

NHRA legal is why the chamber is not modern .. but .. it's quite a twisted D chamber compared to a original head that favors less valve shrouding by the looks of it

[e philpott]

If you look closely, you can tell the chamber is more of a "D" shape with more quench than a normal hi riser. I was told the spark plug position was moved slightly, to allow a better exhaust port for one, but also "stands" the spark plug up straighter. These heads were designed for the T-bolt, guys mainly, as something that the NHRA rules would accept as a replacement head.

If you look close, there are lots of refinements to the HR head design, and yes, that chamber is canted and not exactly "stock". I would guess that the chamber is rough cast like that, before final machining, to save on aluminum. And I can guarantee that Pond doesn't care if anyone else likes it; that was not his intention when designing it. It is purely for NHRA purposes. It will be interesting to see what Mr. Pond and Mr. Paquet can do with them. I'm curious if there's a weight penalty to go along with them.

I don't think Ray will use them in Super Stock , this head is more for Stock class with no modification to ports or chamber or for people that want a somewhat period correct High Riser without using old wore out parts

[TomP]

It's nice to see a new High Riser head meant for Stock Eliminator. I  guess the precident for the changed chambers and ports was set by the allowable replacement heads for other engines. Crappy orange engines can use a much improved aftermarket head.

[HR427]

I'm curious if there's a weight penalty to go along with them.

5hp.... so if your running AA/SA as Pond does... that's 5x7.50 … extra 37.5 lbs

A/S 40 lbs
B/S 42.5

C/S 45

[TomP]

C/S with a high riser,  64 Galaxie. Someone needs to build that!

[HR427]

C/S with a high riser,  64 Galaxie. Someone needs to build that!

Thats what I'm doing...will run b or c....and a 4 speed.