catnipple

hello.. i am new to this forum n have been seeking help on a nissan forum from people who have done this s13 ls1 swap successfully n i havent got very far... so i thought id have more luck here, anyway yeah, 5.7 ls1 t56 trans i ordered from hawks perf n i am planning on dropping it in a nissan 240sx... i just picked up ported heads with dual valve springs, and titanium retainers. i also got a texas speed 224/228r 114 cam and chromoly pushrods n a comp cams dual timing chain. so i have many questions and the first question i need to know soon is what is the stock bore of an ls1? i should be going with the arp head studs n the mls gaskets ive been looking at are 4.130" bore, 4.160" bore, 4.125" bore, 3.910" bore, 4.135" bore, most of them are flatout gaskets which im not sure if they are a reputable gasket source or not either..but i do need to know what the stock bore is so i can order the head gaskets i need so i can continue the process.. any help is greatly appreciated thank you!

thedudeZ

iTrader: (14)

3.898 should be your stock bore. 3.910 should d the trick. I reccomend gm mls stock gaskets or the felpros which can be had for 35 a set from the local dealer.