Power increase

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Apr 18, 2007 | 12:20 PM

v8blazer

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From: DFW

Power increase

How much power could I expect from swapping from 241 heads to 243 with stock sized sodium filled valves. Car is a full bolt on with MS3 and nitrous.

Apr 18, 2007 | 01:31 PM

PREDATOR-Z

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From: BFE

Since you're doing the work, I would spend another $600 and get them ported.

But you're looking at 10>15rwhp direct swap.

Apr 18, 2007 | 03:18 PM

Xtnct00WS6

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From: Sterling VA

Call up Patriot Performance, you could probably get them ported and milled for about the price listed above. ~15hp isn't worth a headswap. I sent my 243's to them and everything turned out great.

Apr 18, 2007 | 07:01 PM

ls120000

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doesnt seem to be worth the hassle

Apr 18, 2007 | 08:39 PM

theblur98ss

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From: East Brady, Pa

I agree. The gains wouldn't be very much. Add in the time, new bolts and gaskets and it's not a very good doller to hp ratio.

Apr 18, 2007 | 08:44 PM

LS1C5Vette

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P.P. can custom port your heads for about $600??? HMMM

Apr 18, 2007 | 09:12 PM

Xtnct00WS6

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From: Sterling VA

I forget the exact price...it might be a little bit more. But it's well worth it.

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Apr 18, 2007 | 10:15 PM

v8blazer

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From: DFW

I sent them an email.. thanks guys.. Do you think with the full CNC port and slightly milled I could get in the 440RWHP range, or would I be better off spending the extra money and get the PRC 5.3 2.5s?