5.3 2012 heads porting ? cost

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Oct 14, 2013 | 10:48 AM

andyda98

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From: South Dakota

5.3 2012 heads porting ? cost

i have a 2002 formula. I can get a set of complete heads for $400, 32k on them, i plan on headers and ls6 type cam and dyno tune. My question is this a good price or should i look for 243.s What could realalistly expect for hp with this ? thanks

Last edited by andyda98; Oct 17, 2013 at 08:32 AM.

Oct 14, 2013 | 11:05 AM

KCS

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From: Conroe, TX

What casting number is on the heads? If it isn't 243 or 799, $400 is a ripoff.

Oct 14, 2013 | 11:08 AM

andyda98

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believe its 799 from 2012 sierra

Oct 14, 2013 | 12:29 PM

redtan

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That's a pretty good price for low mile heads. They are basically the same thing as 243s.

Oct 14, 2013 | 12:56 PM

andyda98

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it was a flood car anything i should be worried about

Oct 14, 2013 | 01:25 PM

KCS

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Quote:

Originally Posted by andyda98

it was a flood car anything i should be worried about

Slim chance it sucked water, but I don't think it would hurt anything in the cylinder head.

Oct 15, 2013 | 06:51 AM

vettenuts

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From: Little Rhody

Not sure how much it was flooded, but disassemble the heads and check them over. Valve springs, retailers, etc. will rust if in water long enough. Flood can mean many things. Up to the floors or submerged. Won't affect the casting but could affect other parts in the heads.

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Oct 15, 2013 | 11:29 AM

andyda98

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would 400 hp be reachable with all this

Oct 15, 2013 | 02:00 PM

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andyda98

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the casting number a guy gave me for these were 12564243 from what i looked up are those 243 heads then

Oct 15, 2013 | 10:05 PM

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2000PewterT/A

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Quote:

Originally Posted by andyda98

would 400 hp be reachable with all this

With a LS6 cam it would be a struggle, I would look for something a little bigger and it would easily hit your goal.

Oct 16, 2013 | 01:23 PM

#12

andyda98

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I called a local shop that builds race engines, asked about a port job between the mac porting and half way. The price was around 600 to 800, is this decently priced for a quality job?

Last edited by andyda98; Oct 16, 2013 at 02:27 PM.