new ls7 block... what to do??

[MurderedOutTA]

i have a few ?'s i need to ask before i buy one... i have a 98 trans am.. will the 427 ls7 fit? if i will i would like some options... im looking for around 700 horse... any info or help will be great

[FutureWS6]

I know itll fit, its just gonna take alot of moving things around and things like the battery or going to be out of the engine bay.

[Zinergy]

i have a few ?'s i need to ask before i buy one... i have a 98 trans am.. will the 427 ls7 fit? if i will i would like some options... im looking for around 700 horse... any info or help will be great

It will fit just fine. As far as 700hp do you eman 700whp or 700crank? For 700crank, you would need a very stout N/A build, nos, boost for 700whp you need nos or boost.

[shady milkman]

the ls7 block is the same dimensions as the ls1 ..so no relocation of batteries and such ..you will need sensor relocaters ..um is this just the block ? or a short block ? or a long block ?

[FutureWS6]

your gonna have to get a near rear end 2.....they can break at stock power. imagine 700

[justinmc978]

i have a few ?'s i need to ask before i buy one... i have a 98 trans am.. will the 427 ls7 fit? if i will i would like some options... im looking for around 700 horse... any info or help will be great

are you stuck on an ls7 or would you consider other options such as a 402/408 lq9 iron block stroker, or a heavily boosted forged 5.3/5.7 for example? getting 700 horses will not come cheap by anymeans, just trying to help you see all of your options as to reach your goal.

[vette0009]

Just punch and re-sleeve your existing block 4.125

Use Darton sleeves and have a Authorized Darton machinist install them

That way everything will line up, Accessories etc etc

You'll need new heads etc thoe

[shady milkman]

Just punch and re-sleeve your existing block 4.125

Use Darton sleeves and have a Authorized Darton machinist install them

That way everything will line up, Accessories etc etc

You'll need new heads etc thoe

exactly..so he will need a +4.0 heads....the same (minus one is cath other is rect) heads...so he has a very strong block with better casting and lubercation characteristic. so now all he would need is a cam,intake and fuel system....all things that would need to be upgraded anyways ...

all the accessories for the most part will line up and be interchangeable..so that isnt a concern

[shady milkman]

are you stuck on an ls7 or would you consider other options such as a 402/408 lq9 iron block stroker, or a heavily boosted forged 5.3/5.7 for example? getting 700 horses will not come cheap by anymeans, just trying to help you see all of your options as to reach your goal.

why would he go lower CI and a heavier block ? when you have a short block already (i think he has the internals)

with the advancements with the gen IVs the only real advantage to the lq9 irons is initial cost.

[camaross1]

hey shady i think the dry sump for the ls7 goes where the batt is, and relocate batt to trunk, passenger side

[shady milkman]

hey shady i think the dry sump for the ls7 goes where the batt is, and relocate batt to trunk, passenger side

this is true..but depending on where you get the ls7..you can run a wet sump with a ls7..just needs the shorter crank snout..i have also herd of people cutting the long snout to work

[justinmc978]

why would he go lower CI and a heavier block ? when you have a short block already (i think he has the internals)

with the advancements with the gen IVs the only real advantage to the lq9 irons is initial cost.

where did he say he already had the block?

[shady milkman]

where did he say he already had the block?

Good point. I was mistaking this thread with another one with a guy that got a great deal on a ls7 shortblock

[justinmc978]

Good point. I was mistaking this thread with another one with a guy that got a great deal on a ls7 shortblock