510cid small block
510cid small block If i'm doing my math right, the LSX block with a 4.250bore X 4.500 stroke would yield 510 cubes. Is that even do able? If that was the case we could easily be looking at a 700plus RWHP NA pump gas LSX. I don't know, would that type of stroke compromise the block?
Why would you do that when you can make more hp for less money with a FI setup? Heads and an intake that support a 510cube motor aren't going to be cheap. You really need a set of canted valve heads and a sheetmetal intake.
yeah you are looking at a 30k motor if not more.
You can put a Injected bigblock in the car for less.
Trending Topics
all it would do is fizzle, supporting a 4.5" stroke even on a talldeck block is going to leave next to nothing for a ringland, and 4.250 bore would mean almost no material left on the sleeve, i dont see the motor living very long between rebuilds and at 4.250 bore you would need a new block every time.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
but on a side note. just to have a 500+ ci small block. we all know that would be bad ***. and you all keep talking about the heads. MTI has used stock ls1 heads for years. even on there 455 goat build. so you telling me that the trick flow 235 or new afr 235 wont flow enough air? bull ****.
TECH Junkie
Joined: Nov 2003
Posts: 3,265
Likes: 1
From: CHITOWN
you couldn't spray it.
but on a side note. just to have a 500+ ci small block. we all know that would be bad ***. and you all keep talking about the heads. MTI has used stock ls1 heads for years. even on there 455 goat build. so you telling me that the trick flow 235 or new afr 235 wont flow enough air? bull ****.
but on a side note. just to have a 500+ ci small block. we all know that would be bad ***. and you all keep talking about the heads. MTI has used stock ls1 heads for years. even on there 455 goat build. so you telling me that the trick flow 235 or new afr 235 wont flow enough air? bull ****.
You go ahead and put a 330cfm head on a big block and watch how much power it doesn't make... in order to make power you need air, and 330cfm is not going to properly feed a 500ci motor. sure it may make 500-600hp. Why would anyone spend 20k-30k on a 600whp motor that would peak at 4500-5000rpm?
TECH Enthusiast
Joined: Jan 2008
Posts: 625
Likes: 0
You can make almost 700 RWHP (M6) with a safer, reliable 454ci build and the correct top end, for less than 15K.
Sheet metal intake + ported LS7 heads + 105mm TB + no MAF + 2" headers + 12:1 cr + pump gas
There's no way any of the plastic intakes are gonna feed 510ci, let alone 427ci. Even the best heads available today cannot feed 510ci to their potential.
Until there are 450+ cfm heads for the LSx blocks, you're wasting your time building anything bigger than a 434-454ci engine.
When we do have heads that can flow to match 510 cubes, like the big block world does....then we'll be able to make 800-900 RWHP N/A engines too.
And even if you could do a 510ci, why would you want to max it out, all you will have is a constant ticking time bomb under the hood.
Sheet metal intake + ported LS7 heads + 105mm TB + no MAF + 2" headers + 12:1 cr + pump gas
There's no way any of the plastic intakes are gonna feed 510ci, let alone 427ci. Even the best heads available today cannot feed 510ci to their potential.
Until there are 450+ cfm heads for the LSx blocks, you're wasting your time building anything bigger than a 434-454ci engine.
When we do have heads that can flow to match 510 cubes, like the big block world does....then we'll be able to make 800-900 RWHP N/A engines too.
And even if you could do a 510ci, why would you want to max it out, all you will have is a constant ticking time bomb under the hood.
Last edited by needadvice; Jun 25, 2008 at 05:15 PM.
I kicked around the idea of a big cube LSX block. It could win some money if you were a street racer. You'd beat most any other small block car that "sits" like yours as long as your car was setup right.
Banned
Joined: Feb 2007
Posts: 453
Likes: 0
You can make almost 700 RWHP (M6) with a safer, reliable 454ci build and the correct top end, for less than 15K.
Sheet metal intake + ported LS7 heads + 105mm TB + no MAF + 2" headers + 12:1 cr + pump gas
There's no way any of the plastic intakes are gonna feed 510ci, let alone 427ci. Even the best heads available today cannot feed 510ci to their potential.
Until there are 450+ cfm heads for the LSx blocks, you're wasting your time building anything bigger than a 434-454ci engine.
When we do have heads that can flow to match 510 cubes, like the big block world does....then we'll be able to make 800-900 RWHP N/A engines too.
And even if you could do a 510ci, why would you want to max it out, all you will have is a constant ticking time bomb under the hood.
Sheet metal intake + ported LS7 heads + 105mm TB + no MAF + 2" headers + 12:1 cr + pump gas
There's no way any of the plastic intakes are gonna feed 510ci, let alone 427ci. Even the best heads available today cannot feed 510ci to their potential.
Until there are 450+ cfm heads for the LSx blocks, you're wasting your time building anything bigger than a 434-454ci engine.
When we do have heads that can flow to match 510 cubes, like the big block world does....then we'll be able to make 800-900 RWHP N/A engines too.
And even if you could do a 510ci, why would you want to max it out, all you will have is a constant ticking time bomb under the hood.
Personally, I think you can do it for between $15000-$20000 depending on your head selection and displacement. You run into problems usuing the stock computer going with a 468cui or larger and spinning over 7600rpm, so keep that in mind.
On a side note, we just completed a ECS S/C kit on a 2006 Vette (M6), that made 590rwhp on a stock bottom end on pump gas. It all depends, either way it's going to cost about the same. Ultimately you'll make more power FI, but the price starts going up really quick. Gotta love the law of diminishing returns.
Last edited by Tuner@Straightline; Jun 25, 2008 at 06:38 PM.
454 LSX 930hp NA @ 8400rpm
http://www.youtube.com/watch?v=e8LjUQzJurs
Some of the build info:
http://www.maxchevy.com/tech/2007/ii_7-lsx-3.html
http://www.youtube.com/watch?v=e8LjUQzJurs
Some of the build info:
http://www.maxchevy.com/tech/2007/ii_7-lsx-3.html
Full blown race motor with almost 1.00" lift
That motor uses lots of GM supplied pieced one of them being one-off c5r heads along with a bunch of other incredibly high priced components, that motor is way beyond the 30K range.
That motor uses lots of GM supplied pieced one of them being one-off c5r heads along with a bunch of other incredibly high priced components, that motor is way beyond the 30K range.
supporting a 4.5" stroke even on a talldeck block is going to leave next to nothing for a ringland, and 4.250 bore would mean almost no material left on the sleeve,
The bigger problem would be sealing it. You would have almost no head gasket in between the cylinders.
We dont go bigger than a 4.185 with our LXS 454 and we dont recommned n2o with it either. We like the 434 for boost and nitrous use.