LS1TECH - View Single Post

kidreno_21 · 11-08-2008, 11:12 PM

I am doing the same thing. I was looking at SDPC's LS2 402 short block, then I saw the LS7 short block. To me, since I will be doing a road course a couple times a year, I decided on the bigger bore of the LS7 over the LS2. Granted, it is not by much (.122"), but the LS7 block was designed for the 4" stroke.

I am no expert, but I would think the 427 LS7 would get better mpg over the 427 LS2. The 427 LS2 is also operating at a much higher than stock stroke nearing its limits.

11-08-2008, 11:12 PM	#4
kidreno_21 Staging Lane Trader Rating: 0 Join Date: Oct 2006 Location: Fort Leonard Wood, MO Posts: 81	I am doing the same thing. I was looking at SDPC's LS2 402 short block, then I saw the LS7 short block. To me, since I will be doing a road course a couple times a year, I decided on the bigger bore of the LS7 over the LS2. Granted, it is not by much (.122"), but the LS7 block was designed for the 4" stroke. I am no expert, but I would think the 427 LS7 would get better mpg over the 427 LS2. The 427 LS2 is also operating at a much higher than stock stroke nearing its limits. __________________ 2001 SS SLP, M6, G6x3 cam, AFR 205s 60cc (Mamofied), FAST92/NW92 (Mamofied), Kook's 1 7/8 LT headers with catted Y-pipe to MagnaFlow cat back, Moser 12 Bolt, 3.73, OZ700 clutch. BMR: Boxed SFCs, front & rear sway bars, LCAs, shock tower brace, moly TQ arm, PH relocation bar. Koni D/A shocks and UMI R/R K-member. Baer OEM replacement brakes. LS3/416 (SDPC) -15cc pistons with compstar rods and crank, and nitrous rings for later... Next on deck: Driver Mod