whats truly needed to swap an ls engine
#271
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I have been following this thread for a long time. Lots of good info. I now have a 93 searay 220 BR 350/A1 and a semi low miles 5.3l with entire harness and ecu that I pulled out of a running driving truck. Attempting to do this reliable and cheap which usually dont go hand in hand. Had a few questions.
1. Are you guys using the oem gm ps pump for yours alpha? Or alpha pump?
2. Can I run dry exhaust through the alpha? As in out the prop? I wanted a captains call set up, can it be done dry or would it melt something. The pcm and harding manifolds are pricey. Was thinking of buying ls forward facing turbo headers adapt them backwards and ceramic coating them.
3. Will I have to get a sea pump? Only going freshwater. Lots of lakes in maine lol. Will the alpha raw water pump be enough to cool a stockish LS? Also, if I use raw water I then don't need a heat exchanger? Even though there's tons of room, raw water cooling appears much simpler.
thank you!
1. Are you guys using the oem gm ps pump for yours alpha? Or alpha pump?
2. Can I run dry exhaust through the alpha? As in out the prop? I wanted a captains call set up, can it be done dry or would it melt something. The pcm and harding manifolds are pricey. Was thinking of buying ls forward facing turbo headers adapt them backwards and ceramic coating them.
3. Will I have to get a sea pump? Only going freshwater. Lots of lakes in maine lol. Will the alpha raw water pump be enough to cool a stockish LS? Also, if I use raw water I then don't need a heat exchanger? Even though there's tons of room, raw water cooling appears much simpler.
thank you!
#273
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I have looked at this more than once, I actually have a couple of NASCAR Spec LS2's just waiting to be built for a boat. I figure around 10g's each to dress and install the engines, heat ex-changer, oil adapter, headers, flywheel, oil pan, engine mounts and front dress. No actual engine or ECU. I'm sure with some creativity it could be done for less.
#274
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iTrader: (2)
The torque curve of the traditional SBC/BBC is better suited for a boat. A 5.3L LS is not going to gain you anything, and the cost of a supercharged LS is nuts. There have been some threads - good ones too - but you'll find that there's a lot involved in getting usable power out of them that justifies the cost. Just my thoughts.