ajw2500hd

iTrader: (12)

lsx 451 has anyone build one yet?!?!?! for the street. i was thinking of building one with a solid roller or a high revving hydraulic cam! any opinions or any good info would be great!! thanks aj

supermouse4

GM High Tech Performance Magazine has been building a LSX 451 for the past few months, in a future issue they will be putting it on the dyno and seeing the fruits of their labor.

Here is a link on their LSX 451ci progress.

http://www.gmhightechperformance.com...les/index.html

Phynix

iTrader: (3)

I was looking into doing a 454, but I am gonna end up going 451 with a rhs block, 4.155 bore and a 4.150 stroke, It will actually be 450. I am still in the planning stages though.

fuel

iTrader: (13)

for some reason, there taking way to log on that article.

airforcemanss

iTrader: (23)

what are trying outta that combo with that bore and stroke?

why chose a 450/1 over a reg 454? you guys planning on some big shots or something?

just trying to understand other options

ajw2500hd

iTrader: (12)

i keep hearing people having problems with the 454 burning oil because how far the rod is up in the piston or how high the rings are!?!?!?!?! i think or maybe if she blows have room to bore!

cubezilla

iTrader: (6)

I'm doing a 441 w/ a 4 inch stroke and 6 inch rod just so I have Piston in it for plenty of spray...

FreakChevy

Call Bryan from LME!!

Ryne @ CMS

iTrader: (10)

i just built one with R.E.D. resleeve ls3 block used a callies 4.100 crank, 6.125 callies rods, wiseco 4.185" bore piston.... mind you the darton sleeves are longer then lsx sleeve

fuel

iTrader: (13)

i just got my gm high tech.......there 451 made 720 hp with a cary intake

Mr Monaro

Fraser from ASE is also top value knows his stuff.
CHEERS

Phynix

iTrader: (3)

It's just about what bore and stroke, more stroke helps with getting more torque and more bore helps get more horsepower, then there are limitations to stroke and/or bore depending on the block you use. One block may let you use more stroke while another may allow for more bore. For me in the rhs block I cant go more than 4.165 bore, I'm going 4.155 to not max out the block, I also want just a little more bore than stroke, hence the slightly smaller stroke. I have also noticed that most people with force induction usually run a much smaller crank than bore, not quite sure as to why, I am guessing it may help to spin the motor faster, but I am not sure on that.

Orange Juice

iTrader: (3)

Talk to a reputable builder, when I first starting looking at a 427/440 I talked with AES and when I was considering going with more stroke they advised me against using the LS3 block because of its shorter sleeves.
Should be hearing the results soon.

ajw2500hd

iTrader: (12)

nice!