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Re: LS Swap Dually Questions - First Timer
Having done a similar swap...(LQ9/NV4500)..
I used the Ebay adapter plates and stock sbc mounts...
Stock oil pan clears just fine...
I used the stock crossmember, but did have to move it and redrill holes..
I kept my stock tank and ran a inline pump...
I used a psi harness..where you plan to mount the ecm can be a headache..I've got mine wedged under the dash...with the factory ac box theres just not much room under there..I wanted to mount the ecm under the seat,but psi isn't long enough...I've since heard that BP automotive is long enough to mount ecm under seat, but cant 100% confirm it...I've always used psi, but my next build I'm going with bp..
I had a local guy unlock my ecm, then we put it on his dyno after i got the truck running...I highly recommended the dyno..it let's him fine tune everything ..it ran great with a basic unlock and generic tune , but what a difference after the dyno..
I used a Dakota digital speedometer converter box to go from pulse to cable..
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