Just bought an 02 WS6 and wanted to throw a H/C package on it. looking to go either 205 cc AFR heads that flow 292cfm at 550 lift or the ET performance 215 cc heads that flow 312 cfm at 550 lift. the only problem is that i havent really heard to much about ET heads. if you guys have another head selection you perfer post it and Ill look into it. money is not an issue at this point just want to get everything i can from the stock bottom end , and not looking to put a motor in it just yet either. car only has 27,000 miles on the clock so it should be good for a while.

http://www.ls1speed.com/artwork/flow/etp215.jpg

http://www.ls1speed.com/artwork/flow/afr1510.jpg

 

Aren't the L92 heads the new great thing for the LSx motors?

 

i thought that the L92 heads were for ls2 and up engine, not sure though since this is my first LS1 , Im just starting to get to know this motor. could tell you alot about an LT1 though

 

I didn't know that you could only bore the LS1 to .010 over. That sucks.

 

ttt

 

you can't go wrong with the AFR heads. the small intake runner will help build good power down low which is great for a street car. and also look at the exhaust numbers...the AFR heads blow the ETs out of the water.

the AFR have a proven performance gain.

 

Please post the links to the tests that prove this.

 

ok ok...

going by the links he posted...granted they are manufacturer's ads...but the exhaust flow for the AFRs is better than the ETs.

granted nothing is as advertised, and one specific characteristic of a head doesn't make it "better" than the rest...but it adds to it.

i appologize for my BOLD statement... geez

 

AFR's have a good reputation for being top notch head. 205cc's are good for an NA motor. 215's would be more for the stroker or F/I'd motors.

Have you concidered Trick Flow? THey did very well on an LS2 head comparison in GMHTP.

 

yea i did look at the trick flows and for just about the same amount of money i'd rather get the afrs or the ets. just want to get the best quality and performance for my car, cost isnt a factor either price dosent matter to me if the performance is there .

 

http://www.ls1speed.com/artwork/flow/etp215.jpg

http://www.ls1speed.com/artwork/flow/afr1510.jpg

 

woops.... reposted immage.. mb.. 66cc chamber 205 intake



Ehh... woot it.. Here's the Trick flow #'s too. 215intake, tho. 64cc chamber.

 

well from looking at those #'s it seems that the trickflow might just have an advantage on the exhaust side, definitly something to think about. I do agree with you on the AFR's well know comp. w/ probably the best rap. although i took a look at the ET heads and was amazed at what i saw. there castings looked beefier and well built, I was really impressed. i saw a pic of them on ls1tech, if i find it again ill post it. thanx for all the help

 

here the pics of the ETP heads, just go down to the secound reply

http://www.ls1tech.com/forums/showthread.php?t=417733

 

Just excatly how does the AFR blow away the ET? Let's see............that shows that the AFRs flow more exhaust and the ETs flow more intake. Now which one will make more power on any particular combo???