Anyone have an update and some accurate spec's on these head's?
Wow, that's awesome flow!The small 265 version will be our first product launch.....it flows over 340 CFM with excellent low and mid-lift numbers
Good question actually.....we decided to design them just like the later GM stuff in the "roval" configuration. The main reason was I felt that shaped entrance would ultimately be more conducive to a better approach/design heading into the critical short side of the intake port.Tony, will these "oval" port head's be the 049 type port or something different like the 502 version of an oval port and will the 295cc port use the same dimension on the raised exhaust? i.e. .350? Thank's, Dan
I agree....but is our 265 really the right head for 454 based platform you have your sites set on legitamately trying to achieve 700 HP (an obviously aggressive application)....not at all.It appears to me the 305 cc w/CNC chamber would still be the better head for a 700 HP 454 based engine.
OK Ratt....we get your frustration over the delay. Time to lift just a little, cut us some slack, and be thankful/hopeful it is as good a product as I describe.They sound impressive, now lets see em.
Granted a 3 legged mule at this time I've got a mule too, but I've got 5 or 6 points races left, hate to change mid stream :noway:There is only one place to fully test this head (on the drag strip) and I have the mule.
Let me put that thing to the testGuy....
Please get that this is an extremely capable street head.....Its a street head first and foremost but one that would still be respectable at the track in the right configuration.
Its not aimed or marketed to be the ultimate strip head because when I think strip I think more cam, more compression, mechanical roller, and more RPM. Now we might consider a 315 or even larger in a max effort build.
In a 454 that you wanted to terrorize both (street and strip) the 290 cc oval would do some serious damage, but would need a mechanical roller to stay out of valve float and stretch her legs.
Dont get me wrong....Im going to test this on pump gas 91 octane and put the screws to it with a mechanical roller and a single plane intake and I hope to see 650 - 675 HP with a 10 to 1 thirty over 454.....maybe it will make that and maybe it wont but those are my hopes. What I'm more interested in however is what the rest of the curve looks like and that's what holds particular interest to me.
The reality is this would be a perfect head in your tow rig....a 3500 series 454 dually with a small cam and a dual plane intake and headers. It would rock right off idle and make big torque everywhere.....however change up the combo a bit and it will also deliver in your street/strip Chevelle. It has a wide array of applications due to the fact its a small runner that moves alot of air with a very impressive curve from the crack of the valve to .650 lift....covers the entire gambit of any cam you are likely to run in a true 265 cc ideal combination. Our 315 is very similar but made for slightly larger combinations ideally.....you could put one on a 454 and make great power and install the same head on a 555 and also have great success....the key to both is they are very efficient and move a ton of air per their given volume and cross section....thats what makes them extremely flexible and able to cater to many different combos.
-Tony
Heads are 24' just like our current rect port line-up with all the valves and geometry in exactly the same position/location.Tony, have the head's been rolled any? I have a couple Dart Intake's that matches the GMPP gasket pn 12366985 perfectly ( which incidently is the only exact fit roval gasket I have seen). Will this gasket be applicable to your port as well or will you have your own gasket? I may be a player for your cnc'd version when it is finished. I ask because the Edelbrock head's I currently have are rolled some.
PDQ,I've said all along that the old now long gone cast-iron Merlin VR 290 cc true large oval port heads would be dandies IF brought back to a modern designed life w/ 90 cc open chambers so that out of the box, they would pump up the CR of a stock 454 P/U engine.
And they are true large ovals if I remember right.
pdq67
I agree and disagree....P.S. I grow tired of reading about dyno results with no drag strip performance to back it up. How did the engine dyno and flow bench ever become the benchmark for performance? LOL Chevelles, Camaros and Novas were born and raised on the drag strip.
And my C5 on the street does just the opposite.....feeding on lower powered sixty foot monsters.....LOLTony. I've got to tell you that underperforming combos with big MPH are what my combo feeds on.