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Old Oct 6, 2009 | 05:20 PM
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Default cheap heads??

ok so i was bored in school today and instead of doing work
i was wondering whats the best "bang for your buck" head?lol

if i was to port it or have it ported?

thanks!!
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Old Oct 6, 2009 | 05:24 PM
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best bang for the buck is a stock 243 or 799.
they support over 500bhp with cam an supporting bolts on just about any
5.7+ engine.
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Old Oct 6, 2009 | 05:28 PM
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whats the difference beween them both?? and they just bolt on to a ls1?
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Old Oct 6, 2009 | 05:31 PM
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Originally Posted by DCC!!
whats the difference beween them both?? and they just bolt on to a ls1?

There is no difference between the two.

They are an OEM head for the LS motors
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Old Oct 6, 2009 | 05:38 PM
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haha then whats with the different numbers? differnt years or springs or something?
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Old Oct 6, 2009 | 05:44 PM
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i believe the 799 was on the trucks and obviously 243s were on the LS6's from C5Z06's and CTS-V's
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Old Oct 6, 2009 | 05:47 PM
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What kind of budget are you on? We have several CNC'd GM casting options available with some starting right around $1000. Shoot me a PM or post up what you are looking to do with the car and what is done to it currently and I'm sure we can get you a cylinder head to do everything you are wanting and reach your goals for the car.

Thanks!
Jon
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Old Oct 6, 2009 | 06:01 PM
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so all ls6 heads are 243s or just the ones on those cars? and im just looking and planing now thanks tho! lol
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Old Oct 6, 2009 | 06:17 PM
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Originally Posted by DCC!!
so all ls6 heads are 243s or just the ones on those cars? and im just looking and planing now thanks tho! lol
real ls6 heads used lite weight sodium filled valves.
all other vehicles using 243 had regular valves. 243 are found on vettes,gto's trucks. so are 799
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Old Oct 6, 2009 | 06:27 PM
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what would be a good price range for unported used 243s or 799s? and how much better do the flow over stock heads?
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Old Oct 6, 2009 | 06:30 PM
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Originally Posted by DCC!!
what would be a good price range for unported used 243s or 799s? and how much better do the flow over stock heads?
the range depends on use or condition, from 350-400+$ usually
they flow significantly more than stock 241
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Old Oct 6, 2009 | 06:40 PM
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are all these numbers casting numbers or somthing?
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Old Oct 6, 2009 | 07:26 PM
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Originally Posted by DCC!!
are all these numbers casting numbers or somthing?
Yes like mentioned the 243's where for the Corvette the 799 where for the truck but they flow the same. You can put the hollow and sodium filled valves on the 799s you'll have the same as the 243s. Go on ebay and you'll find a good deal on either one.

I have the 243 set up with the hollow and sodium filled, cnc'd, milled, but i went with the Comp 921 springs. Bullet proof and i am pushing more than 500bhp since I am pushing 450 C5 LS1 to the rear through an A4. 243 heads will support way more than 500bhp. Break Horse Power (BHP) means to the crank and I know plenty of ZO6s where I am from with 243s running 500+rwhp.
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Old Oct 6, 2009 | 07:34 PM
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do you know what all trucks and cars came with either of the heads?

thanks for all the help btw guys
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Old Oct 6, 2009 | 07:38 PM
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long list, from vettes to gtos to suv and trucks
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Old Oct 6, 2009 | 10:37 PM
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basically a V8 trucks and suvs
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Old Oct 7, 2009 | 11:19 AM
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If your trying to see what any specific one has just look under the hood the casting number is very easy to spot.
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Old Oct 7, 2009 | 07:45 PM
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how well can these heads be ported??
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Old Oct 7, 2009 | 08:05 PM
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Originally Posted by DCC!!
how well can these heads be ported??
depends on who is doing the porting. seriously a properly done set can support well over 500rwhp NA
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Old Oct 7, 2009 | 08:59 PM
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I thought the 799 had larger combustion chambers compared to the 64cc 243 heads. maybe I'm mistaken
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