XpEdItIoUs

iTrader: (44)

Im going to be builing a 412 ls2 and need help on picking the right bottom end. What will be the best setup for this nitrous motor and what bore/stroke and rods will i need.

XpEdItIoUs

iTrader: (44)

Can anyone here help please.

XpEdItIoUs

iTrader: (44)

Any sponsores here have what i need to build this.

Builder

Without punching a calculator, I am not sure what a 412 is. Most of the sponsors seem to have a 402 AL block, or a 408 FE block, ready to roll. Those you can have with any combination of mild to wild components...and in a week to three, depending on the builder.

Is there a particular reason you are looking at 412ci?

383ss

iTrader: (14)

sounds like you need to use the search feature and call some sponsors to see what they will offer for what $$$$.

do you know the bore/stroke combo for a 412?

Randy WS6

iTrader: (69)

you can try to build one with this. it might help some

4.00 bore 6.125 rod & 4.100 crank 412cid.


http://www.c5frc.com/calculators/Com...Calculator.htm

XpEdItIoUs

iTrader: (44)

Im going with a 412 because it's closer to a 427 that i wish i could afford.

Randy WS6

iTrader: (69)

Im building a 418cid aluminum LS2 4.030 bore & 6.125 rod & 4.100 crank.

XpEdItIoUs

iTrader: (44)

Where are you getting your rotating assembly from.

Randy WS6

iTrader: (69)

Eagle

RAMPANT

iTrader: (17)

I'm using:

- LS2 block 4.0005 bore
- Eagle 4.100 crank
- CompStar 6.125 rods
- Wiseco Pistons

Topped off with AllPros heads.

The motor has been quite reliable so far, but has only 4K on it and about 60 passes. I have stayed NA but I'm sure it would be fine with some spray.


Rampant

MyWs62FaST4u

iTrader: (2)

im doing a 418 too...

chuntington101

well for a 402 i would go for W2W! they say their kit can handle 1500bhp (tested)!!!

good enough for you?!?!?!?!?!?!?!?

Chris.

Randy WS6

iTrader: (69)

I got my Eagle Crank 4.100 & Eagle rods 6.125 last week and got my ROSS pistons yesterday and got my aluminum LS2 block back today board .030" looks grate .tomorrow ill put the crank in and rods & pistons to mock up the block to check for any clearance problems with the rods hitting inside the block and grind were needed and disassemble the motor to take to have balanced .not long now!!!

Kevin@W2W

In all reality the cubic inch delta will not produce a large horsepower difference.

383ss

iTrader: (14)

who did you get the block from? most places I've heard of are leary of doing a 4.030 bore ls2

chuntington101

i agree totally! if you are making 2bhp per ci then you will make about 20bhp more! oh and thats asuming all the efficencies are the same!

Chris.

Randy WS6

iTrader: (69)

20 hp is 20 hp ill take all i can get ,for a $90.00 bore job. it hard getting 20 hp out of a big cub. motor for 90.00 ,motors that's had every little bit of hp squeezed out of it with every mod know to man, with cams ,heads ,intakes, computer tuning, n.o.s., turbos, blowers, so all i can think of is got bigger cubs. or as much as a man can afford.What do you think ?????

XpEdItIoUs

iTrader: (44)

I heard somewhere that a 4.100 crank puts alot more stress on the rods.

Randy WS6

iTrader: (69)

It might on a stock length rod ,But shouldn't as bad on a longer rod like a 6.125" because that it don't come out of the bore as much (binding up in the cylinder) and with aftermarket rod like a H beam there made for the extra stress.