4v heads?

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Apr 24, 2007 | 09:35 PM

chrispy98cobra

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From: Warwick, RI

4v heads?

is it worth doing heads on a 4v? the seem rather expensive just for the bare heads..am i better off sending out the stock heads?

Apr 24, 2007 | 09:39 PM

r3dn3ck

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porting a set of 4v heads plus valve seats and all the other details will cost about as much as getting a complete set... bite the bullet.

Apr 25, 2007 | 09:50 AM

StormsGT

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That blows. I've been thinking about that myself. Just hate to spend $2200.

Apr 25, 2007 | 10:13 AM

chrispy98cobra

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especially when you can get a shortblock w/forged internals for that price

Apr 25, 2007 | 10:19 AM

r3dn3ck

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you should be able to find a decent set of ported B heads on the corral... I see em up there pretty regularly. Pony up with a grand and you should be able to find someone that needs money more than heads.

Apr 25, 2007 | 11:14 AM

chrispy98cobra

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what about mach 1 or 99-04 cobra take offs? im assuming i would also need the intake

Apr 25, 2007 | 11:17 AM

r3dn3ck

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yep... possibly a front cover too but I'm not up to date on my 4v's.

Apr 25, 2007 | 11:53 AM

StormsGT

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Quote:

Originally Posted by r3dn3ck

The corral?

Apr 25, 2007 | 11:54 AM

StormsGT

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From: Hope IN

Quote:

Originally Posted by chrispy98cobra

what about mach 1 or 99-04 cobra take offs? im assuming i would also need the intake

Why would you want them?

Apr 25, 2007 | 01:21 PM

#10

r3dn3ck

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availability would be the only useful excuse for going from B's to newer type. I've seen higher flow numbers for B heads than for C's in ported form.

Apr 25, 2007 | 01:39 PM

#11

jjtgiants

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From: Dublin, CA

Quote:

Originally Posted by chrispy98cobra

what about mach 1 or 99-04 cobra take offs? im assuming i would also need the intake

I believe the mach 1 and 03/04 cobra heads are the same. Not sure about the 99/01 cobra heads though

Apr 25, 2007 | 03:28 PM

#12

StormsGT

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From: Hope IN

Yes but,the 4V responds better to changes in duration then lift. lots of the flow numbers you see are rated at .600 and you'll never see more then .500 lift on street cams,few race only cams.