Blu99T/A

iTrader: (5)

I was in the middle of swapping heads/cam into my LS1 and found some cam bearing issues. I acquired a very low mileage iron block 6.0 with 317 heads.
My cam is a 230/232 .613/.595 on 111. It was originally going to be used with TSP 5.3 stage 2.5 heads, but now I am going to get the 317 heads worked over. as I think it will breath much better. My question is how much can I have milled off the 317's to up my compression? Any other recomendations for these heads.

The rotating assembly in the 6.0 will be stock except I am adding ARP rod bolts.

Blu99T/A

iTrader: (5)

or should i get L92 heads/intake?

180ls1

iTrader: (4)

i know i saw an article where they swapped ls2 heads and intake to l92 heads and l76 intake and picked up 50 horsepower. ls2 heads are the same as the 317's but have more compression. Depending on your budget some ported l92's or even stock l92's would be an great option. note that the l92 heads will not work with the cathedral ports found on the 317 heads or ls6 style intake, ect..

luckyhenriksen

iTrader: (1)

I was wondering the same thing, I am building a 6.0 and will be adding L92 heads, and wanted to know how much I could mill them to get like 11:1 CPR

Blu99T/A

iTrader: (5)

Yeah, I know that is I go with L92 heads that I have to go L76 intake, which I am considering rather than spending money on the 317 heads. It is also my understanding that you have to run LS3 rockers and rocker stands.

My original post was trying to figure out if I can mill the 317 heads enough to bump up the compression and have good PTV clearance.

Jason 98 TA

iTrader: (4)

Tell us about your short-block first. Is it the flat top version, or the dished pistons like out of a HD truck? That effects it a lot. If it's a flat top then you can have your stock heads cnc ported to stage 1 specs for $650, or stage 2.5 specs for $900.

The key is what piston you have & your goal from a compression stand point. We've done lots of Stage 2.5 5.3l heads for dished 6.0l customers because with the smaller chambers we can get your compression up without milling a ton & killing valve drop. The main thing is we need to know everything about that short-block & your goals for the car.

Give us a call when you have some free time, we look forward to the opportunity to help you on this project!!

H/C Combo
http://texas-speed.com/shop/item.asp?itemid=203

Heads:
http://www.texas-speed.com/shop/item...id=84&catid=20

6.0l heads:
http://www.texas-speed.com/shop/item...d=133&catid=40