A while ago for my first performance engine I was considering the LSX454 engine, it seemed like such a good choice, but then I started looking round more and it seems that unless I'm pushing well over 1500 horses, iron block is nothing more than wasted weight. I wanted to push max power out of a light enough NA engine for use in common v8 swap vehicle, the RX7. I'm only in the planning stages right now, and my current DD vehicle is a 1997 Buick Riviera, which has a very reliable 3800 series II powerplant. I plan to drive this for a long time as my DD even when I do get the RX7 running. I wish to find a n RX7 FD rolling shell with no engine or tranny for as cheap as possible, or an s2000 shell if I can't find an RX7, I know LS1's can easily be fitted in either car with proper modifications.
that being said, instead of spending 10k on the lsx454 block, I'm looking into buying a built aluminum LS block from a race company. http://www.golenengineservice.com/en...d-short-block/ http://www.golenengineservice.com/en...n-short-block/
I'd probably be going NA only to save weight and I really don't need more than 700hp for my application, but it would be nice knowing that later down the road I could boost my motor reliably. What exactly is the difference in their boosted and non boosted engines? for example on their site, what is the difference between the cheaper 427 LS7 and the 427 boosted LS7? and I'm guessing the 440 may be a bad idea to boost because of a thinner cylinder wall? if not, what would a 440CI LS7 block be able to handle reliably with those internals out of curiousity?
that, and I'm guessing that I'd need heads and cam and then it would be a turn key engine given an intake, headers, engine belt accessories, or what exactly else is needed to make this a full crate turn key engine? the site is not very informative lol
by the way, I'm not expecting to just randomly buy an engine and s2000 and lol derp it into a v8 bastard child ghetto car. I just know I want a performance car in the somewhat near future and instead of being like every other corvette or Camaro on the road, I'd like to have either an RX7 or s2000 v8 swap, and there are many things I don't know yet, so I'll try to learn most of the v8 related things here.
one thing I have no idea that I've been trying to find out is: are all the LSx engines the same exact crate size? AKA if an LS1 fits in the hood, an LS2, LS3, LS6, LS7, LS9 will all fit with the same mountings and are very easily interchangeable? like if you tore out the LS1 of a Miata v8 swap, you could easily cram an LSX454 in it too? Iv'e never been sure on that one :3
also, I'm thinking the engine will weigh around 500 pounds or so, basically the same weight as an LS1, and WILL retain damn near perfect weight distribution in an rx7, there are plenty with around 51/49 Iv'e seen on forums, so given that the engine weighs the same, I'm guessing it will be the same exact dimensions, I only raise the question because some guy that seemed to know alot more about cars than me said the LSX block was bigger than the LS1 to me a while ago. basically an LS1 kit would work perfect for any LSx block as well?
I'm almost positive this thread will be treated as a joke because I'm not a professional builder and don't know everything already, but I might get a helpful reply >_>
so I'm guessing the built block from that site+ all other components to make a turn key engine will cost around 10k? honestly I think I'd go with the 440 because the block and a supercharger would actually mess up the weight distribution, and I want the car to handle perfect.