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Old 09-25-2003, 11:39 AM
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Heads Or Bore?

what would give you more HP and Torque Bore .30 over Or LPS Track Pro Small Block Chevy 1,940/1,500 76cc $299.00 Heads
from this site http://www.larrysperformance.com/data/monthly.html

thanks

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Old 09-25-2003, 11:58 AM
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Heads!!!

If it can't breathe it doesn't matter how much you bore the cylinders.
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Old 09-25-2003, 01:34 PM
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Won't that be $600 for heads?

If so its not really THAT great of a deal.

If it is two for $300, go ahead and get the port and polish too.
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Old 09-25-2003, 02:10 PM
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Heads are, and will always be, the most restrictive part of the induction system. The power is in the heads.
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Old 09-25-2003, 03:32 PM
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Hey,
I noticed you threw torque into the equation. I f you are looking for gobs of low end torque and won't be running 7000 RPM, in my opinion, your stock heads will do fine. Why do I say this? Once upon a time I built a 350 with high compression (actually too high), a Comp Cams 268H cam set with 4 degree advance, Edelbrock dual plane manifold, and headers. It provided me with the pleasure of neck snapping torque and hp with the standard run of mill, plain-jane heads. If I were building a high RPM engine for the strip, then I would definitely invest in heads that can breathe better than stock.
As far as boring goes, there is old adage: "there is no substitue for cubic inches."
Bottom line is that it depends how you are going to build the rest of the engine and how you will use it.
Just my two cents worth, Skidmark
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Old 09-25-2003, 03:55 PM
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I would be careful. There was a recent member post in which he received one light and one heavy casting from some outfit in CA. If the heads are heavy castings and the same # castings, it would be a decent price for $300/pr.
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Old 09-25-2003, 04:10 PM
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the amount of horse power you would gain from boring would be negligible. by making the cylinder walls thiner you are allowing more flex which creates more blow by. As for heads there are power gains to be had a lower rpm with the right heads but choose carefully.
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Old 09-25-2003, 05:02 PM
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in another post it says its the set , is it? thanks everyone
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Old 09-25-2003, 06:18 PM
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I believe it was I who said it was a set in the other post, but I'm not completely sure, I haven't seen a site that sells heads seperatly, but just to be sure I'd ask the seller before you buy.

BTW: does anyone know where to find Desktop Dyno 2k head flow files for that set of heads? (LPS Track Pro)
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