mohd2116

dears ,, i have 454 LSX stock with LS7 heads and actually planning to go for twin turbo but i'm looking for the recommended brand and size because this is the first time to work on force induction .


i need expert advice !!

stevieturbo

And are you looking for 50hp, or 5000hp ?

Meth Sled

iTrader: (1)

X2
And also, what's the purpose of this motor and car? Strip, street?

6togo

iTrader: (13)

I would not plan on throwing much boost at it those cyl. walls are fairly thin!

rkreigh

feel free to post more about intended use and budget

for up to around 1200 hp, a reasonably affordable small bore iron block can make plenty of power and work better at a much lower cost

or if you want more the LS next and other alternatives such as a built RHS can be needed as you want more

based on your post, I'd say you got some splainin to do to get any expert advice

mohd2116

Actually yes planning to reach 1200HP what should I need for that !!

No budget limit on this stage I just make my study for my car ,, the purpose it will be street racing car

busa3268

Don't tell Nelson racing engines that.

Unreal

The GM LS454 isn't a good boost motor. Much better off starting with a different setup.

LS6427

iTrader: (2)

LOL.....No kidding......Nelson's 454ci LSX makes 2,500 HP.....all day long. And will last a long time. Just gotta be built properly....

.

Unreal

HUGE DIFFERENCE in price between Nelson and GMPP motors. Not even on same level.

6togo

iTrader: (13)

He uses Tall deck blocks for the builds also!

LASTLS1

iTrader: (7)

I've heard a lot about Nelson's engines. Never heard of one wining a race at the track,,, and I race a lot. Who has one in their car that races? Just curious.

Detoxx03

iTrader: (14)

I would not use that block for forced induction.

Heavy H.P.

Whats good cubic inches to go with using a LSX block for a setup that will make over 1000hp to the ground and will be ran at the track and on the street often?

JoeNova

Don't go crazy on bore size. With boost, you don't need lots of cubes for good power. There are lots of 1200+ hp street cars running on 3 liters. Cylinder wall thickness helps give a block rigidity. This is why there are a several 4.8/5.3 OEM blocks making over 1000 HP on the street without block failure. The cylinder walls have serious meat between them.

blaine123

Well you can, but you have to keep the boost fairly low. I think under 10 PSI is safe number. Not sure that 10 psi will hit the number your looking for.

I'm sure there are plenty of members who would love to trade that motor for a smaller motor ready for boost.