Lots of results posted so far. lol
Best Cylinder Head Porting Shop/Vendor- Your Experiences w/Results
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furrystump
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I have only heard good things about Modern with one caveat. They seem to be super busy and wait times could have increased. The double edge sword of doing good work. Just something I heard from a reliable source no direct knowledge.
I’ve tried several times to phone them without any success.
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.
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Wyrmrider
Well-Known Member
Porter and Chad Spier are two that are good with both cams and heads
having a race car head on a street car with cam to match is not fun for very long
having a race car head on a street car with cam to match is not fun for very long
Ain’t that the truth!
Even more so when the converters weren’t so great back 30 years ago.
(By today’s standards)
Unless you were a local grudge racer, they really weren’t fun to go places in and just enjoy the car and hang out.
At one point, I had two cars. The cruiser and the beast. Both had there place and time. Some people didn’t know I had a monster street ripper at home. It just wasn’t enjoyable to drive 40 or 50 miles for a hang out meet 1-2 or 3 counties away.
Even more so when the converters weren’t so great back 30 years ago.
(By today’s standards)
Unless you were a local grudge racer, they really weren’t fun to go places in and just enjoy the car and hang out.
At one point, I had two cars. The cruiser and the beast. Both had there place and time. Some people didn’t know I had a monster street ripper at home. It just wasn’t enjoyable to drive 40 or 50 miles for a hang out meet 1-2 or 3 counties away.
PRH
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That billet tractor puller stuff from scratch is pretty cool!!
furrystump
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threewood
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If you are talking about Modern, email them. They responded to me the next day. I don't think I ever contacted or talked with them on the phone.
Thanks threewood. Will do!
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
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.
I wasn't necessarily worried about me, it was the OP who asked for results. Thanks for being the first to post some!
threewood
Well-Known Member
Here is the MCH flow sheet included with my heads. Take it for what it is as I know there are several ways to get flow data.
stixx
Well-Known Member
A flow bench is a tool. Properly set up and calibrated at the same depression of water it should read the same or within a small percentage to
any other flowbench. Not properly calibrated or otherwise fooled with it will give different numbers, for whatever reason... but that is the operator's
fault and not the flowbench's.
You can fool with your torque wrench to give a different reading, but would you do that just to please yourself? Guess not, LOL.
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