That has not been decided yet. It had 2.08 when I sent them to him.So what valve size are you using in yours since Brett thought that valve in the test head was to big.
That has not been decided yet. It had 2.08 when I sent them to him.So what valve size are you using in yours since Brett thought that valve in the test head was to big.
We plugged in a bigger Comp cam and it picked up 23 hp on the software. But we going to have Charlie Westcott grind us a custom design. But I do feel confident that in the end I'll be able to make 740 hp with it. But the proff will be in the ET when we get to that point. Thank you for all of your helpful replies.Power output depends on the cylinder heads and there is rarely enough information for any computer program to get close. We use PipeMax and it can get close, but only if you know the VE. And nobody really knows the VE until after the engine is run on the dyno so that kind of makes the program useless for predicting power.
When you're dealing with something "weird" like W5 heads the best place to get a power estimate is from a W5 expert. And they most likely would want to know details on the heads before they gave you a number.
I can usually predict power within a few % just by looking at the parts a guy brings in to the dyno. But that trick only works for OOTB cylinder heads. Once someone starts whittling on the heads all bets are off. Power might go up but sometimes it goes down. Same thing with home ported manifold, home re-worked carbs, etc.
Good w5 heads with the right cam should be able to make 740 on that short block, but I'm not really familiar enough with W5 heads to predict a number. We just ran a 429 inch SB Chevy that made 780 hp on the dyno. So the question is if W5 heads are as good as a 15 degree SBC head. The 429 SBC had a much bigger cam than what you posted. I think the SBC was 280/290.
Again, what was it you got for the same number on the same head? Would you like to try to port a set? I’ll send them along.There we go again with a pathetic .300 number. He loves his 55 degree seat so I wouldn’t be surprised if it got one.
What would you consider a good number at .300 ? Like 200 cfm ?There we go again with a pathetic .300 number. He loves his 55 degree seat so I wouldn’t be surprised if it got one.
Again, what was it you got for the same number on the same head? Would you like to try to port a set? I’ll send them along.
What would you consider a good number at .300 ? Like 200 cfm ?
Well, I matched that .300"# with just a pocket ported "J" head on a 4" bore, Mancini 2.02" stainless semi-tulip intakes. The exhaust flowed [email protected] &[email protected], & no, We're not racing flowbenches..Again, what was it you got for the same number on the same head? Would you like to try to port a set? I’ll send them along.
I just say… I don’t port heads, I had Brett Miller port them.
You wanna make fun of the head and make disparaging remarks, talk to Brett and/or out port him.
Then I throw my hands up. No one but no one takes up the challenge and the **** talking stops.
The heads are what they are and that’s all they’ll be since the casting gave up the ghost.
Your J head flows better, well fuckin good for you and have fun with that. Sounds awesome and great. Since your an ace at J heads, perhaps you can teach Brett how to port. Would you like his phone number? You can call him up and brag.
Easy Dude, I'm not trashing anybody, those heads are not set up the same. PBR is probably correct about the valve seat angles, those sets of J heads I did 30yrs ago were only realizing ~.485" lift w/a 292°/.508" PurpleShaft using the T/A rockers, so I obviously focused on that lift range..they worked. You asked a question about expected flow @.300 when John said it was pathetic, I offered what I managed to do with the J's, that's all....I'm sure Brett can do J's as well as anybody can.......I just say… I don’t port heads, I had Brett Miller port them.
You wanna make fun of the head and make disparaging remarks, talk to Brett and/or out port him.
Then I throw my hands up. No one but no one takes up the challenge and the **** talking stops.
The heads are what they are and that’s all they’ll be since the casting gave up the ghost.
Your J head flows better, well fuckin good for you and have fun with that. Sounds awesome and great. Since your an ace at J heads, perhaps you can teach Brett how to port. What do you want? Perhaps his phone number? You can call him up and brag.
Again, where did I "trash" anybody ...I agree 100%. All these guys trashing Miller and not a one of them has built a 1000 horsepower small block.
Miller isn’t stupid. He uses steeper than 45 degree seats because they make horsepower, regardless of what a flow bench says.
Again, where did I "trash" anybody ...
I'm waiting....
PBR made a comment,.....rumble quoted & addressed Me specifically, & You jumped in with "All these guys", unless You're counting John as more than one.........I didn’t name anyone. If the shoe fits…
PBR made a comment,.....rumble quoted & addressed Me specifically, & You jumped in with "All these guys", unless You're counting John as more than one.........
You asked a question about expected flow @.300
You're right, You asked John what He thought His # would be on those particular heads at that lift, & 273 backed that up with the above quote. I simply shared My #'s, ......since there seems to be a half-off sale on train tickets to Triggerville, I'll leave so You can have some alone time...later.I did? Please quote it for me.
The rest you can go shove in Brett’s face. Brag to him.
All that you have said, I have said in the past about J/OEM heads.