how much more can i open these babies up
02-13-2016, 07:55 PM
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how much more can i open these babies up i pulled my motor yesterday out and idk whether to start a new build with different heads and intake or keep what i have and just refreshen the motor.. anyways im talkin about these heads i currently have .. they are the prc l92/ls3 heads milled to 64cc...So i was wondering how much more can i open them up if i get like vengeance racing or mamo or frankenstein to work on them...
02-13-2016, 09:04 PM
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More info would be nice. What are your goals? Car? 6.oL or 6.2L? Either way, I'd stroke it. 4.o stroke max.
02-13-2016, 11:58 PM
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02-14-2016, 07:09 AM
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What's the cc on those do you know? I've seen rectangular port heads go up to 280ish ccs on the intake side but those are for max effort combos.
You can definitely have them worked by one of those guys without actually increasing the runners too much. Good porters know the areas to attack and make it more efficient rather than just hogging out the ports.
What kinda power are you trying to make that ported LS3s are not enough for you?
You can definitely have them worked by one of those guys without actually increasing the runners too much. Good porters know the areas to attack and make it more efficient rather than just hogging out the ports.
What kinda power are you trying to make that ported LS3s are not enough for you?
02-14-2016, 11:05 AM
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What's the cc on those do you know? I've seen rectangular port heads go up to 280ish ccs on the intake side but those are for max effort combos.
You can definitely have them worked by one of those guys without actually increasing the runners too much. Good porters know the areas to attack and make it more efficient rather than just hogging out the ports.
What kinda power are you trying to make that ported LS3s are not enough for you?
You can definitely have them worked by one of those guys without actually increasing the runners too much. Good porters know the areas to attack and make it more efficient rather than just hogging out the ports.
What kinda power are you trying to make that ported LS3s are not enough for you?
02-14-2016, 11:08 AM
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02-14-2016, 12:37 PM
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These are the ones i have https://www.texas-speed.com/p-1179-p...ted-heads.aspx
The Frankenstein heads are awesome though, easily the nicest ones I saw at PRI - I'd love to do a motor with those.
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02-14-2016, 12:58 PM
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How much power are you looking for? I do motors that make over 625 at the flywheel with stock LS3 heads and CA smog legal cam, you'll likely be just fine for whatever your power needs are with just a fresh valve job and new springs on those heads, maybe a little bit of hand blending.
The Frankenstein heads are awesome though, easily the nicest ones I saw at PRI - I'd love to do a motor with those.
The Frankenstein heads are awesome though, easily the nicest ones I saw at PRI - I'd love to do a motor with those.
02-14-2016, 01:17 PM
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im doin a new build since my 408 got toasted..gotta take to machine shop to see if my block is still salvageable.If it is im going to try this build one more time and do it right.. Im thinkin about 750rwhp to 1000 with either a turbo or supercharger instead of my previous set up which was a hi compression 408.
02-14-2016, 06:20 PM
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That's a fun build - if you've got the cash, I'd do a Darton Sleeved block to 4.125" along with the Molnar Tech Turbo rods and crank along with some coated or diamondyze ceramic coated pistons with the upgraded turbo pins. Aftermarket heads would be a very good thing to keep the gasket happy with the extra deck thickness.
02-14-2016, 06:48 PM
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I really like Callies Compstar, I think I'd say they're about equal, but I'm WD with Molnar so I get much better prices than with Callies. We use Callies when going for a domestic Magnum type crank.
02-14-2016, 06:58 PM
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What's the cc on those do you know? I've seen rectangular port heads go up to 280ish ccs on the intake side but those are for max effort combos.
You can definitely have them worked by one of those guys without actually increasing the runners too much. Good porters know the areas to attack and make it more efficient rather than just hogging out the ports.
What kinda power are you trying to make that ported LS3s are not enough for you?
You can definitely have them worked by one of those guys without actually increasing the runners too much. Good porters know the areas to attack and make it more efficient rather than just hogging out the ports.
What kinda power are you trying to make that ported LS3s are not enough for you?
02-14-2016, 06:59 PM
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Tom Molnar owned K1 and sold it to Wiseco, the Molnar Tech parts I have used so far have been nicer than the older K1 stuff.
I really like Callies Compstar, I think I'd say they're about equal, but I'm WD with Molnar so I get much better prices than with Callies. We use Callies when going for a domestic Magnum type crank.
I really like Callies Compstar, I think I'd say they're about equal, but I'm WD with Molnar so I get much better prices than with Callies. We use Callies when going for a domestic Magnum type crank.
02-14-2016, 11:36 PM
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The Molnar parts have better finishing processes here in the US and don't drastically change dimensions when torque is broken and then reapplied like with Scat and Eagle. And eagles metallurgy and finishing is easily the worst.