GTOdave

Stock bottom end LS1, Trick Flow 215 heads / Texas Speed MS4 cam and 102/102 FAST/PTM....who has it, and can someone tell me some dyno numbers on this set up?? i just need some numbers to guide me please..

or would you guys go with the PRC 215 heads....what do you guys think would be a better per/horse power heads?? my buddy has a ls1 WS.6 with MS4, 102/102 FAST/PTM, and it still has stock 853 heads on her..hes looking at heads and dont know what to get..just need a little help.

Thanks again guys, Dave.

garygnu

I would go with the TFS heads,they are a 13.5 valve angle head that will give you a little more ptv clearenc.I would not mill them ether.look at the tfs 220cc cast head also,10hp less.

chrs1313

iTrader: (24)

the as cast heads 220 are a great bang for the buck, buy since I see your friend has a 102 setup he is going more max effort...

to do it right and squeeze 10-12 more hp out of it I would mill the heads and flycut the pistons...

either heads will work great just get which ever one can be had for cheaper...

if using stock rockers go with a trunion upgrade and get a shim kit from Shane at thunder racing to have the geometry setup right...if roller rocker I recommend yella terra ultralites...

here is basically the same setup with dyno/track results...my cam is basically a ms4 with lower intake lift and different base lobes...and a 92 instead of 102...

https://ls1tech.com/forums/dynamomet...dit-video.html