Vrooom

yes yes im a noob... that being said is the lsx and ls7 block the same?

MikeD101898

iTrader: (5)

LSX= LS(add desired number here (1,2,7))

Vrooom

that was fast thanks much.. so the block that has the uproar recently is the same as the ls7 block? meaning the new one that cost around 1900-2500 for the block

greysteel_M6

iTrader: (5)

no, they're entirely different

Vrooom

ok thanks wasent sure as to how to pose the question... so between buying a ls7 vs the new lsx block which would be the way to go? Is there a notable difference between the 2? thanks

greysteel_M6

iTrader: (5)

You haven't stated what the application is, but the lsx bowtie block probably the last block you'll ever need. It's basically a ripped off warhawk straight from gm.

Vrooom

I would be building it for street/strip use. I know I want to go NA all thw way no nitrous nor FI of anykind. Just wanting to build a street powerhouse that puts down some good numebers at the track. I will be building this slow since Id be learning at the same time. I do have a few know how guys to help me with it but better to learn doing it myself vs jsut buying a turnkey. Also is there anything needed to be change to the stock fbody's to accept this motor except of course the drivetrain to handle the added power and tunnig. thanks Looking for 550-600hp thanks

Still deciding between going 427 or 454route

VENGEANCE

You know what they say, bigger is better!

(sometimes)

lol

greysteel_M6

iTrader: (5)

550/600 flywheel? The lsx block can safely go 510. Drivetrain, tranny an rear end.

93TAWicked1

iTrader: (28)

The LSX block is a bow tie block from GM performance parts, it is iron and has a number of differences from the production blocks, most notibly 6 bolts per cylinder and main first oiling.

The LS7 is a production 4.125 bore block that comes in the new Z06. It is aluminum.

You will need LS2 covers and conversion harness usually about $225 everything else is a straight swap.

If your looking for a reliable 454+ the LSX is a pretty nice setup. But a resleeved LS2 in 427 block is a lighter powerful setup too. Either way I HIGHLY recommend you have a company like LME build the shortblock after that everything is pretty easy.

A 402 is an economical way to get to where you want to be, you could use the difference in money in some nice heads...