Lots of results posted so far. lol
Exactly. R&J Performance that did my 273 heads also scratch builds John Deere heads for tractor pullers. Radar hand ports heads for S&S (motorcycle engines) daily He was part of the B1 development years back. These guys do some cool stuff.I think in your case what you should do is call the porter of your choice that is close to you. Talk to them about your engine. Go to their shop, look around.
Ask what they can do to reach your goal and how much it will cost.
If you want to make power there is nothing beter than having a friend or a shop that you trust.
Like others have said, port flow is just a part of the equation.
Here’s my 14” x 12” x 5’ block of aluminum, can you make me a head? SURE, how hard can it be! DOH!!!!!!That billet tractor puller stuff from scratch is pretty cool!!
I’ve tried several times to phone them without any success.
Ok.....The only “out of the box” vs ported data I have is probably not what you are looking for, because I changed a lot of the engine at the same time….oh well, here it is.Lots of results posted so far. lol
Ok.....The only “out of the box” vs ported data I have is probably not what you are looking for, because I changed a lot of the engine at the same time….oh well, here it is.
360, 10.7:1 compression (pump gas), unported Edelbrocks (stock flow ~242cfm), MP 509 hydraulic cam, Air-gap intake, 750dp. The car ran 12.49 @ 108 like this (3250# Barracuda, 4.10 gears, 727).
Same block, stroked to 410, 10.8:1 compression (pump gas), stage 2 ported Edelbrocks from Ryan @ Shady Dell (flow 293cfm), small street roller (248/254 @0.05 and about 0.576 lift), Air-gap intake, 750dp, car ran a best of 10.8 @ 123 with the Airgap intake. The car went 10.54 @ 126 on e85 and a Victor intake.
Like I said, changed a few more things than the heads (stroke, bigger cam, ported heads), but the rest was the same.
Take it for what it is as I know there are several ways to get flow data.