1992 Miata, LS1, then LS3 swapped

mazpower · 06-02-2011, 12:14 PM

I think this whole build is cursed.

Ever since my machinist decided to go with the 402 instead of the 383 - and bored my stock block to 4" - I've been worried cause the general wisdom is a LS1 can't be bored to a size larger than 3.908". My machinist is a good dude and knows what he's doing but he hasn't done a lot of LSx engines. So we both start investigating. He says Scat told him that you can go to 4" on the LS1 and that's why he went with the 402 kit. Then he calls them back and they say "oh we meant with a LS2". So my machinist is getting me another LS1 block and I'm going with the 383. He's taking care of everything, the only penalty to me is time. I took him the short block last week and I should have the "new" short block back in a couple weeks. Maybe then I can finally get this build over with.

06-02-2011, 12:14 PM	#11
mazpower Rawr Bearclaw Join Date: Feb 2008 Location: The Souf Posts: 197 Rep Power: 18	I think this whole build is cursed. Ever since my machinist decided to go with the 402 instead of the 383 - and bored my stock block to 4" - I've been worried cause the general wisdom is a LS1 can't be bored to a size larger than 3.908". My machinist is a good dude and knows what he's doing but he hasn't done a lot of LSx engines. So we both start investigating. He says Scat told him that you can go to 4" on the LS1 and that's why he went with the 402 kit. Then he calls them back and they say "oh we meant with a LS2". So my machinist is getting me another LS1 block and I'm going with the 383. He's taking care of everything, the only penalty to me is time. I took him the short block last week and I should have the "new" short block back in a couple weeks. Maybe then I can finally get this build over with. __________________ Illicit Performance Rotary building, porting, tuning, chassis dyno services www.illicitperformance.com