Ive been looking into allmotor LS' for awhile. running somewhere around 12.5:1 comp, and shit. But recently experienced VTEC (thanks shortbusrebel07 and ef9civicgen4). So it kinda tore me away, Ill probably go with B16 head, 11.1:1 comp pistons, eagle rods, golden eagle mfg, lsvtec kit, str fuel rail, 1G DSM injectors, UR pulleys, AEBS intake mani, ICEMAN cold air, thermal R&D classic ex., GSR cams, titnium retainers, dual springs valves. Thats prolly it. or close it it.
Go with the LS/VTEC im building one too.
B18a1 block, PR3 pistons(11.6:1), arp rod bolts, new oem main bearings, B16a head, P&P, skunk2 valvetrain with skunk2 stage 3's, Skunk2 I/M, 4-1 Header, FPR, Y1 tranny, ACT clutch, ACT flywheel 8.8lbs. Looking to pull 12's ALL-MOTOR.
All i can say is after driving this GSR theres almost no way to keep your self from taping that8k rpm mark, im glad i got a GS-R and didint do an LS/Vtec. If i was you i would do the all motor Ls nd try and keep its power curve within its RPM range
The Ls/Vetec would be cheaper and yield more power. I have a spare LS too that I was thinking of dropping into an old hatch for fun. If it's just going to be a beater swap to keep miles off of your main project I'd just drop it in as is.
I want to to all motor LS, because I already have a LS head, and I wont need to go out and buy a vtec head, and I sort of wanted to stay away from the machine shop as much as I can, because they charge an arm and a leg because they are the only one round here, and the do work on mostly domestics, rarely a honda. I could basically install pistons, bearings, check tolerances and all that my self, i was thinking of getting sleeves, which I a machine shop basically has to do, and the PnP I cant do, and the valve job I cant do. other wise I can install valve springs, retainers, and valves my self. I just need something to really keep me busy, I get really bored, and dont like working on my car, because i dont really have much time, just an hour here and there, so working an hour here and there I can really get a lot done on the LS engine, not risking working on my car, cause if something breaks, I need to be able to depend on my car.
Basically I want to sit around and build stuff for the car and make it a drag car.