thinking about LS swap from twin 454???
11-05-2018, 05:17 PM
#61
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This weekend i just swapped my original Merc 377 (6.2) out of my 2009 Pachanga for a new all aluminium GM crate 6.2 Supercharged LSA engine (556HP & 551TQ). Used original Merc bell housing with a Ram Clutches conversion flywheel ($300ish) & the original motor mounts with LS adapter mounts all in the factory holes into stringers. I'd add pictures but I'm too new I need more posts lol. Anyways all bolted up easy...
11-12-2018, 09:22 PM
#62
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This weekend i just swapped my original Merc 377 (6.2) out of my 2009 Pachanga for a new all aluminium GM crate 6.2 Supercharged LSA engine (556HP & 551TQ). Used original Merc bell housing with a Ram Clutches conversion flywheel ($300ish) & the original motor mounts with LS adapter mounts all in the factory holes into stringers. I'd add pictures but I'm too new I need more posts lol. Anyways all bolted up easy...
11-13-2018, 09:42 AM
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No I did not buy the marine version as the marine unit has the less desirable intercooler. The motors are identical from the block to crank, rods, pistons, cam, heads, etc... Only information i couldn't find out about is the head gaskets. I'm running a closed cooling system as I'd think most would on an Aluminium block so there will be no issues with raw water/salt corrosion.
11-13-2018, 09:53 AM
#66
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No I did not buy the marine version as the marine unit has the less desirable intercooler. The motors are identical from the block to crank, rods, pistons, cam, heads, etc... Only information i couldn't find out about is the head gaskets. I'm running a closed cooling system as I'd think most would on an Aluminium block so there will be no issues with raw water/salt corrosion.
11-13-2018, 09:59 AM
#67
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Yes, CMI marine E-Top header
Custom Marine Inc. - It's All About Performance - Header Applications - LS E-Top Headers
Custom Marine Inc. - It's All About Performance - Header Applications - LS E-Top Headers
11-16-2018, 12:09 AM
#68
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Hey guys, i have a scarab panther 30' that i have the twin 454ci motors out of it, i was going to build them up NA to make about 680ish hp.
Im a LSX guy here and prepare many LS builds, head porting and specialize with the LSA's LS9's LS7's, LS3's and so on, big with the cts-v's and zr1's.
So im up in the air if i should just keep it simple and build up the original motors or swap out for the new tech....i can put together a pair of stock bottomend ls3's that make roughly the same in power, but just curious if others have done the swap and what have they seen different with their boat in performance and economy?
Im sure the ls motors would use half the fuel, but will the boat be a total dog and not have enough ass behind it to get it up and going.
Any insight would be great.
Thanks
Tony
Im a LSX guy here and prepare many LS builds, head porting and specialize with the LSA's LS9's LS7's, LS3's and so on, big with the cts-v's and zr1's.
So im up in the air if i should just keep it simple and build up the original motors or swap out for the new tech....i can put together a pair of stock bottomend ls3's that make roughly the same in power, but just curious if others have done the swap and what have they seen different with their boat in performance and economy?
Im sure the ls motors would use half the fuel, but will the boat be a total dog and not have enough ass behind it to get it up and going.
Any insight would be great.
Thanks
Tony
