GM_GUY

This is what I working with for now..stock intake, ms3 cam, 150 shot. A buddy of mine told me to get a set of TFS 235's..

Z28SteveA4

iTrader: (16)

i suggest a search but you can not use those heads on a stock bore ls1. You have to have a minimum of a 4.030 inch bore and an ls1 has a 3.90 i believe. If u want trick flows go with the 215's they will work quite fine. I would even have someone clean them up alittle bit before putting them on to make a few extra hp

RedRallyeZ

iTrader: (20)

AFR 205's would be my choice if i was looking for a new head for a 346. you also may have a LITTLE bit of room to milll those down for a little extra compression with that cam, someone needs to check on that, but its something that i would look at

transwiz

iTrader: (26)

AFR 205 and Trickflow 215 are both bad *** heads if you can afford them.Their are also some good budget heads if you can't afford those.Patriot and PRC both make some great heads if you are on a budget.I would go with AFR or the Trickflows if I could swing it but I can't afford them.

Jason 98 TA

iTrader: (4)

You could also consider the PRC 215s. We can build a PRC 215 to clear a MS camshaft for under $2000 if you move your spring kit over! We also offer a small bore 227 head that would be great, but you'll need to cut the pistons. The PRC 215 heads can be shipped with approx. 60cc chambers and still clear the MS4! I don't believe any other cylinder heads except the ET heads can offer you a smaller chamber that clears the larger camshafts!

http://www.texas-speed.com/shop/item...d=993&catid=20