Need help Building A Forged 412 LS2
Thread Starter
Joined: May 2004
Posts: 1,658
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From: Phoenix, AZ
Need help Building A Forged 412 LS2 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.
TECH Regular
Joined: Nov 2004
Posts: 415
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From: Reno, NV
Originally Posted by XpEdItIoUs
Any sponsores here have what i need to build this.
Is there a particular reason you are looking at 412ci?
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
4.00 bore 6.125 rod & 4.100 crank 412cid.
http://www.c5frc.com/calculators/Com...Calculator.htm
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Originally Posted by XpEdItIoUs
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.
- 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
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!!!
Originally Posted by Randy WS6
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!!!
TECH Addict
Joined: Aug 2004
Posts: 2,866
Likes: 4
Originally Posted by Kevin@W2W
In all reality the cubic inch delta will not produce a large horsepower difference.
Chris.
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 ?????
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.
