96 lss-10

I have been thinking of doing a stroker motor with my LS-1. I have been told that it is a waste of money because of the bore. I am building carb setup for this engine. Any opinions would be greatly appreciated.

BAD2000TA

iTrader: (6)

Definitely not a waste of time. More power and torque.

msydow

i have one and it makes really good power. i know with a better tune i would be a lot closer to the 500rwhp mark. if you dont wanna buy a block its the only way to go IMO. there's a few guys that have 4.100 inch stroke crank making theirs 396's. i think the wrist pin starts getting into the ring lands though. PM me if you have any questions about my set up.

butler

I ran one for a year. Best time was 10.42. That was with afr 225's, vic jr intake, 750 dp carb and a decent size cam 4.11 gears. A friend of mine had a little more suspension on his car and it was a little lighter. He was running a 346, stock heads, stock block, fast intake and a big cam. His best time was 10.38. I had 85 more cfm 37 more cu. in. and was slower. both had the same gearing and similar stall. I pulled one more mph then him. They have a lot of piston scuff.

180ls1

iTrader: (4)

not a waste but i would rather build a 370 6.0l with forged rods and pistons and invest the money saved on the crank on a better set of heads that will utilize the 4" bore. It should walk on the 383 and have more room to grow.

96 lss-10

I would like to know more about the 396 build.

msydow

i just did a quick search and found a few threads on this. search for 396 or 396 ls1. i had put an engine in my buddies truck that he sucked full of water. if one of the rods hadnt hit the block just above the oil filter i would probably have a 402 now. but i enjoy my 383. just saving some money to spray the **** outta it.

darknessxyz

iTrader: (22)

X2 I wanna know too. After I read a few thread here about 396, there's 2 things bothering me; 1) oil consumption, 2) RPM range affected by bore vs stroke ratio

darknessxyz

iTrader: (22)

Which one you guys will recommend?

346cid with aftermarket high flow head; or
383cid with stock casting port head.

Both equip with same mild cam like a 224R and FAST 90/90

butler

346 ftw

DONAIMIAN

iTrader: (18)

At the end of the day there's no replacement for displacement. Mod for mod the larger motor will always make more power.

96 lss-10

I am using a set of ported heads with mine. So the 396 has oil consumption problems?

geoffreymexico

iTrader: (5)

I have the 224R, untouched FAST 90/90, and untouched AFR 205's that i bought used for a reasonable price. This is untuned so im not sure on the hp. I would guess around 430rwhp, but like I said that is just a guess. And fwiw I have managed to have more than enough fun with my setup. Maybe this will help with your decision.

http://www.youtube.com/watch?v=ybLWhGwSGBY

KCS

iTrader: (20)

I'd go with the 383ci. You can still make a lot of power with a small 3.90" bore; its not as limiting as many people think. Especially when we're talking about using hydraulic roller lifters.

Tony @ AFR has/had a good example of a well built 383ci LS1 in his C5 Vette that, if I remember correctly, made close to 600whp on pump gas.

Also, I know its apples to oranges, but there is a 3.950" bore late model HEMI that just recently made over 700bhp with a 4.250" stroke crank in the EMC, and I think that was accomplished while turning under 6500 RPM or so.

darknessxyz

iTrader: (22)

That's fast. I wanna keep my driver's license valid

My friend keep telling me go with a 383 stroke with my build instead of just a forged 346.

geoffreymexico

iTrader: (5)

You didn't mention forging earlier. If you are going to go to the trouble of replacing your rotating assembly with forged internals I would definitely go for the added displacement. It'll be a little extra coin but it will be worth it in the end. I was just showing what you can do with a stock bottom end and the mods you mentioned.

I had every intention of keeping the original block and doing a forged 383 build, but I have decided to go with a little more displacement in my plans when I get back from Afghanistan.

96 lss-10

Everything in my engine will be forged.

indeed

iTrader: (8)

Any of the newer pistons with coatings are going to help with the scuff of the longer stroke. My 383 looked great at its 10k teardown running Wiesco coated pistons @ 488whp. The key here is getting your piston to wall clearence nice and tight to keep the pistons from rocking as much. Having the motor set up @ zero deck or .005 out of the hole will keep the scuff to a min as well. I wouldn't trade the extra torque I'm making now vs my old stock displacement setup for anything.

ScreaminRedZ

iTrader: (3)

I'm at the point now where I'm strongly considering a rebuild. I'm trying to decide between building my own motor using the stock block and doing a 383 or buying 402 off one of the vendors. If there is a good cost savings by building it myself then I'll go that route. Plus, I've always wanted to build my own motor.

Wildcobra

Wow nice builds