New to the site w/ questions

[Theref]

I recently sold my LS1 block and am going to be rebuilding it bigger and hopefully better. However, I am somewhat at a lost in what block to use. My future plans are as follows...

Moser 12 bolt w/ 4.88's and a spool
Rosler TH350 w/ brake
Would like to do a progessive 300 shot to get me into the mid 9's

Now, where to go with the block? I have thought about a 408 or 402? I know this is probably extremely vauge, but I am just looking for any opinions or suggestions. Any thoughts would be appreciated. Thanks, Mike

[Ed Curtis]

I recently sold my LS1 block and am going to be rebuilding it bigger and hopefully better. However, I am somewhat at a lost in what block to use. My future plans are as follows...

Moser 12 bolt w/ 4.88's and a spool
Rosler TH350 w/ brake
Would like to do a progessive 300 shot to get me into the mid 9's

Now, where to go with the block? I have thought about a 408 or 402? I know this is probably extremely vauge, but I am just looking for any opinions or suggestions. Any thoughts would be appreciated. Thanks, Mike
Welcome Mike...

A 300 shot? Planning on rotating the earth? :D

If you can swing it, the iron LSX block from GM is good for 2500 HP and even a bad tune every now and then.

My second choice would be the L92 block just to gain the extra bore size and cubic inches. I'm not sure about the HP potential but there are 414 strokers out ther over 550 RWHP from what I've seen. I have a couple of guys building F1 ProCharger combinations using these blocks but none are completed yet.

How much power are you planning to make???

Ed

[Theref]

Well Ed, with a 408 some good heads and intake I figure to be between 450-500 and w/ the gas maybe 700 range. I am not too concerned w/ dyno numbers as I am getting this thing into the 9's.

[Black_Knight]

Don't know how much you know about these things, so excuse me if I'm stating the obvious, but the 402 is an aluminum block and the 408 is iron. The iron is cheaper but heavier... although it is known to handle the giggle gas better.

Your options would be:

Iron options:

LQ based block - 408 stroker (cheapest option - less than $1000/block)
LSX block - anywhere from 427 to 500+ (~$2000/block)

Aluminim options:

LS2 stroker - 402 (cheapest aluminum)
L92/LS3 stroker - 414 (slightly more expensive)
resleeved LS1/2 - 427 to ~454 (depends on your builder, but usually more than the above but less than the below)
LS7 - 427 (most expensive option)

[Ed Curtis]

A 408 is just a 4.030" bore and a 4.000" stroke reciprocating assembly. You can obtain that displacement in an aluminum as well as an iron block if you watch cylinder wall thickness.

Ed

[Black_Knight]

A 408 is just a 4.030" bore and a 4.000" stroke reciprocating assembly. You can obtain that displacement in an aluminum as well as an iron block if you watch cylinder wall thickness.

Ed

Of course. Just not too many people like to mess around with that. Which is probably for the best, since you have to know what you're doing...

[Theref]

Well, either the aluminum or iron block is the decsion I'm down too. The iron would be nice for the gas, but I don't know many folks (if any) that have cracked the aluminum block. My undecidiness is the 60 some odd pounds I'll add with the iron block. Seems like I'm defeating the purpose of choping this thing up and making it lighter if I go w/ the iron block?

[Black_Knight]

Seems like I'm defeating the purpose of choping this thing up and making it lighter if I go w/ the iron block?

That's how I see it. But I know some people swear by the iron.

[Theref]

That's how I see it. But I know some people swear by the iron.

For what reason? I guess most of them say it'll handle the juice better, but I'd be more worried about lifting the heads than cracking an aluminum block (though I'm sure it has been done).

On another note...Give me some head and intake opinions.

[Ed Curtis]

For what reason? I guess most of them say it'll handle the juice better, but I'd be more worried about lifting the heads than cracking an aluminum block (though I'm sure it has been done).

On another note...Give me some head and intake opinions.

Iron block has a lot of rigidity and hence their cylinder walls, are more stable. Better ring seal for those adventurous types.

As for top end options... What's the budget??? :D

Ed

[Theref]

As for top end options... What's the budget??? :D

Ed
Depends on how long I want to carry this build out. It's in the fledgling stages as of right now, but I can't see spending more than $2500-$3000 on heads and intake. That might be a low estimate, but it sounded like a good number. Essentially I have the rear end and tranny figured out (started with the easier decision) but have tons of ideas swimming around in my brain for the motor assembly. Just figured I'd give this site a try since it's advertised as being hardcore. I don't think the sky is the limit on my build but I am estimating around 10K for the drive train.