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Old 06-06-12, 04:23PM   #16
GTEEO
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Finally arrived and I gotta go to work! Will scan the flow sheet and post it later. ... Eric
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Old 06-06-12, 04:40PM   #17
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NICE!!!!!
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Old 06-06-12, 06:14PM   #18
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Looking Good ...Now get that bitch together...
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505 Pontiac
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Old 06-06-12, 06:56PM   #19
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Flow Sheet.
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Old 06-06-12, 10:17PM   #20
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I asked on PY, with the valves being 2.25 and 1.75 is a stock block out of the question?
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Old 06-06-12, 10:53PM   #21
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Quote:
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I asked on PY, with the valves being 2.25 and 1.75 is a stock block out of the question?
I would say yes. My other E-heads have 2.19 1.75 valves I had them on a stock block bore was 4.216 on a 455 worked well.
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Old 06-06-12, 11:06PM   #22
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How close are the port openings to stock size. I know Dave was talking about keeping the port opening near stock to keep the velocity up on my pair of heads.
There is plenty of meat between the ports on the heads in the pics.
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Old 06-06-12, 11:41PM   #23
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Quote:
Originally Posted by ponjohn View Post
I asked on PY, with the valves being 2.25 and 1.75 is a stock block out of the question?
He can probably install a smaller intake and keep the flow close. I would think that with the cam you would have to run and ~380CFM you would be tossing the dice on reliability. ... Eric.
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Old 06-06-12, 11:43PM   #24
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Quote:
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How close are the port openings to stock size. I know Dave was talking about keeping the port opening near stock to keep the velocity up on my pair of heads.
There is plenty of meat between the ports on the heads in the pics.
Not sure what the stock opening is but I think this one measured 2.6 high??? I'll measure again when I get home. ... Eric.
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Old 06-07-12, 10:49PM   #25
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I emailed Dave.

2.600 height is 380 cfm
2.25 height is 370

Both at .700 lift.

He has run flow number on a HP head with 2.20 valve and he said the flow fell off.
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Old 06-07-12, 11:15PM   #26
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GETTO, if you don't mind me asking what did the SD...HP heads go for and intake work. You can PM if you don't want to post it here.
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Old 06-07-12, 11:50PM   #27
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GETTO, if you don't mind me asking what did the SD...HP heads go for and intake work. You can PM if you don't want to post it here.
HP Heads were $3500. Intake porting was $250. Note that he had quoted me higher but since I was to get the heads in February/March, he cut the price. Keep the customer happy! I like that. ... Eric.
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Old 06-08-12, 11:27AM   #28
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Damn good price for a 393 cfm head and intake port work. I'm guessing you already had the intake. Won't have to buy new valve covers, or mess with headers, yourd will still bolt right up. I'm guessing you can probably use your push rods and rocker arms too. I'm just thinking its allot cheaper moving up from say a 330 cfm e-head vs another after market head, which I'm sure you've price out or looked at.
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Old 06-08-12, 12:07PM   #29
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Damn good price for a 393 cfm head and intake port work. I'm guessing you already had the intake. Won't have to buy new valve covers, or mess with headers, yourd will still bolt right up. I'm guessing you can probably use your push rods and rocker arms too. I'm just thinking its allot cheaper moving up from say a 330 cfm e-head vs another after market head, which I'm sure you've price out or looked at.
That's what I asked Dave for. A Bracket Race Package. Easy on springs but a good improvement over my 330's. I already had the intake and will reuse all my 'older' parts. I am moving up to 3/8 pushrods from my 5/16 and have to measure. I think it's a good price for a ~390CFM head and they come from a reputable shop. Yes I did look at other heads but they were out of reach for me right now. Maybe later. But then my chassis's only good to 8.50 and I'm probably there right now with a 'little' juice. ... Eric.

I also paid extra to get the decks welded up and then re surfaced for a dry deck instal. ~ $200.

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Old 06-08-12, 12:37PM   #30
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Smart move, not doubt SD a good choice, yeah it would suck if you had to buy another intake then have it ported, then turn around and have to buy valve covers. Then bolt the heads on and find out your headers won't bolt up. Then not know how good the heads and intake are, spent all that money made all those changes, and end up very disappointed. Now your out all the money and have to listen to a bunch of excuses. I don't know of anyone who's been disappointed with SD heads. Keep us posted on how things go. I'm always excited to see guys moving up in HP at affordable price, that way we don't lose Pontiac guys because they've been fooled by marketing gimmicks.
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