LS1 tech to SBC retrofit.
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From: Greater Houston Area
LS1 tech to SBC retrofit. So I've got my eyes set on a boosted 400 destroker. That being a 400 block, splayed caps, stroked down to a 350 crank and punched out .020 over, giving about 376 cubes. Eventually it'll be turbo'd, and when it is, I want to run a multi port injection setup. Edelbrock sells their ProFlo 4 kit for like $2700 or something like that and I'd end up obviously needing bigger and badder injectors so lop on another $650-$900 right there. I'm not keen on spending $3500 on an EFI setup. The other option is an Ebay seller with an imitation kit (same intake design, fuel rails, and injector placement), minus the distributor, throttle, and computer for ~$250. That being said, from there I thought "Gee wouldn't it be cheap and convenient to run LS injectors and coil-on-plug hardware with a tuned LS ECM?" And then I could just run whatever injectors I what right off the bat.
So how possible is this without converting the firing order? I already have a cam selected that I like and don't really want the new (and yes I know, better) firing order so can I just rewire the injector and coil to trick the computer into the oldschool firing order? I've heard this causes potential issues with cylinder to cylinder distribution as the ECM will detect a lean condition on one bank, but would then compensate by enriching what it thinks is all the cylinders on that bank, but in actuality would only be enriching three on that bank and one on the opposite, since that cylinder would NORMALLY be on the other bank with the LS order - potentially underfueling that one cylinder. Is there any way to accommodate this? I could be all in on this setup for around $1500 if it goes right and def want to lean more to the budget side than the bougie side. I am young, but funny enough a bit of a luddite and mostly stick to carbs and distributors so I am out of my league here for sure. So, thoughts? Anybody made something like this work before? I'll do a 4-7/2-3 swap cam if I have to but I definitely would hate to, just because if I'm gonna have an SBC based engine a part of me wants to keep the classic SBC "feel".
So how possible is this without converting the firing order? I already have a cam selected that I like and don't really want the new (and yes I know, better) firing order so can I just rewire the injector and coil to trick the computer into the oldschool firing order? I've heard this causes potential issues with cylinder to cylinder distribution as the ECM will detect a lean condition on one bank, but would then compensate by enriching what it thinks is all the cylinders on that bank, but in actuality would only be enriching three on that bank and one on the opposite, since that cylinder would NORMALLY be on the other bank with the LS order - potentially underfueling that one cylinder. Is there any way to accommodate this? I could be all in on this setup for around $1500 if it goes right and def want to lean more to the budget side than the bougie side. I am young, but funny enough a bit of a luddite and mostly stick to carbs and distributors so I am out of my league here for sure. So, thoughts? Anybody made something like this work before? I'll do a 4-7/2-3 swap cam if I have to but I definitely would hate to, just because if I'm gonna have an SBC based engine a part of me wants to keep the classic SBC "feel".