Rebuilding LT1

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Jan 11, 2011 | 05:45 PM

MichaelWade

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Rebuilding LT1

Ive decided to go with an Eagle Rotating assembly but can't decide on whether to get H beam or I beam rods. Which one is stronger? This isn't a high HP setup that I'll be running. I'll be shooting for 400 on motor but planing to run a 150+ shot.

Jan 11, 2011 | 05:48 PM

RamAir95TA

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400HP on motor is nothing. Go with the i-beams. FWIW I'm putting out close to 575fwhp with Scat forged i-beams. H-beams are stronger but more expensive. Some of them also require more clearancing.

Jan 11, 2011 | 10:33 PM

MichaelWade

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Should I even mess with getting different than stock spec pistons? I'd like to raise the CR to 11:1, or should I just get the heads worked?

Jan 12, 2011 | 12:02 AM

MichaelWade

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Alright, I've decided to build a 355 that is stock spec but forged pistons and rods. Thanks for the input on rods man.

Jan 12, 2011 | 01:08 AM

RamAir95TA

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Quote:

Originally Posted by MichaelWade

Should I even mess with getting different than stock spec pistons? I'd like to raise the CR to 11:1, or should I just get the heads worked?

Don't forget it's not just the pistons that affect compression. Combustion chamber volume, deck height, and gasket thickness all play a part.

If you bore the cylinders (recommended) you're going to need oversized pistons anyway, so you might as well upgrade to a forged slug.

DEFINITELY DEFINITELY DEFINITELY get the heads ported (I recommend AI if you can afford it). That's where your power will be made along with a match spec'd cam.

11:1 is nice, but you can easily go a full point higher without a problem. 11.8:1 is a nice compression for a street motor.

Jan 12, 2011 | 09:37 AM

Corey @ Clayton Racing

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Be careful as to which eagle I beam it comes with!!! But, The Scat pro I beam with 7/16 arp capscrews is the strong one.

Jan 12, 2011 | 10:22 AM

ADM

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Quote:

Originally Posted by Corey @ Clayton Racing

Be careful as to which eagle I beam it comes with!!! But, The Scat pro I beam with 7/16 arp capscrews is the strong one.

Could you kindly post a part number please?

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Jan 12, 2011 | 05:02 PM

vtec

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i would probably trust a set of factory powder rods over the china stuff. same goes for the crank. it has worked well for me so far.

Jan 12, 2011 | 07:16 PM

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MichaelWade

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I will do H/C and a 150 shot. What about pistons? Should I get forged aluminum or OE. Also, if I did go back with OE crank and rods I should replace everything with ARP bolts right?

Jan 12, 2011 | 08:01 PM

#11

vtec

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Quote:

Originally Posted by MichaelWade

I will do H/C and a 150 shot. What about pistons? Should I get forged aluminum or OE. Also, if I did go back with OE crank and rods I should replace everything with ARP bolts right?

balancing with arp rod bolts would be good to do. for pistons, you could run stockers or a lightweight forged piston. dont put some heavy ******* in there, and you dont need "nitrous pistons" for a 150 shot.
put it together correctly and dont spin the doo-doo out of it.