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Old 04-24-2004, 07:18 PM
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Average cost of getting bigger valves in your heads?

Hello,

I was wondering what the average cost would be to give a set of sbc heads bigger valves from 1.94, 1.5 to 2.02, 1.6? Not including the valves, just the machine work?

Thanks

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Old 04-24-2004, 10:53 PM
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We were charged $7 for each one. Not too bad.
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Old 04-25-2004, 05:23 AM
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Nobody, I mean nobody is going to take that old valve seat out, inlarge the valve seat area and then install new large valve seats for $7 a piece!

Just enlarging the valve seat it self for bigger valves does not help performance at all, it only creates more valve shrouding(you might have a bigger top to that cup, but your straw is still the same size)!

This is one time where I have to step in and say "If your going to do something, do it right".
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Old 04-25-2004, 06:22 AM
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I had a set of SBF 302 4V heads that needed a valve job, new valves and hardened seats. I bought the 1.84/1.54 valves to replace the original 1.78/1.47 valves.

My machine shop didn't charge me any more than they would have if I'd supplied the original size valves.

I also did the same thing with another set of heads at another machine shop. Same there.....no extra charge.

Could be different with other shops I suppose.
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Old 04-25-2004, 06:33 AM
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If you are driving this thing on the street, 2.02 valves are not going to make a bit of difference. Save your money................
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Old 04-25-2004, 11:29 AM
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Would I not even want 2.02 valves for a street/strip car?

Thanks
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Old 04-25-2004, 03:02 PM
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You won't notice a difference, unless you open the headers..
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Old 04-25-2004, 04:45 PM
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it dpends, on a 350 that never sees past 6000 RPMs, I agree you may as well stal with 1.94/1.50s, if you plan to bus it higher, youll benifet from the 2.02s. depending what heads you have with 1.94s, you may be better off buying a set of aftermarket heads because even with 2.02s, the ports on the stock heads can only move so much air. John
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