hi all, I am doing a lsx conversion on my truck, currently have the engine bay mocked up with a ls1 5.7 and 4l65e but plan was to mock everything up then use a l98 6.0l engine out of a new holden commodore (australian vehicle). Have been discussing with a friend about cam/tune/exhaust mods which would deffinantly get done before the actual engine was bolted up, while talking bout these mods discussion went to using a 454lsx crate motor as the price difference between buying a short crate motor from australia is roughly 6.5k and the bigblock is just under 10k from the usa which to me is a great price when you compare the two engines. Now obviously with the bigblock crate motor bolt on's are not included ie intake wiring/ecu,starter,alt and exhaust (will be getting extractor headders built anyways so no issue there!) so now i get to the questions that matter? can the bolt on's mentioned above from a smallblock ls1 be used on the lsx 454 bigblock? if not can you point me in the right direction of where to get parts ect..., at this stage i want to way up total cost of doing either one of these conversions and go from there. Also should mention that it cannot be a carb motor as it will not pass our emission laws down here. Personally i think it would be a great conversion as a bigblock lsx motor is very very rare to be found in a legal street car down here (if any for that matter) and secondly as this truck is being built as a elite showcar i think this engine is going to add wow factor. I will also fill you in that the truck is a rcsb and it currently in progress of a body drop (just have to do the steering and seem seal the floor to have that complete) truck will be airbagged with parallel four link (bag over bar and coil over mounting points for taking down the strip) with a watts link, transmission will be a 4l80e if i go a big block or the 4l65e for smallblock with a high stall in either box and rear end i have just built a 9" with a sheetmetal housing,chromeolly axle tubes, full floater with 31 spline axles, 4.3 or 4.56 diff gears with a eaton true track. Brakes on the rear will be 13" rotors with twin piston calipers. front brakes will be a custom set i am designing with a actual automotive engineer/brake system designer that will consist of 14" rotors and 4 or 6 piston brembo calipers. The rims i have are 22" billet twisted vista's 10'' on the rear with alot of dish and 8.5" rims on the front. Like i say the truck is being built to compete in the biggest car shows in Australia so like i say the bigblock would be a great addition to the truck, any help would be greatly appreciated, thanks ryan
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Originally Posted by ryan350
