383 LS1 Jet Boat - finally done! Now with video...
#23
Awesome project friend. Once I finish the swap in my '68 Le Mans, this may be next. Maybe a 5.3 with a decent turbo. Beautiful boat by the way. How stable is it at 70+?
#28
sawzall wielding director
iTrader: (4)
For jets, a lot of it depends on how you drive them. If you cruise at 25-30mph they are more efficient than a prop boat with the same motor. On the other hand once you hit ~45mph they lose efficiency fast. Once you open the secondaries on a carb`ed jet you might as well toss your wallet in. Last year my 17' jet had a 305 chevy and it could burn 15 gallons in a couple hours if you tossed 4 tubes behind it, and a driver and spotter in it.
#30
For jets, a lot of it depends on how you drive them. If you cruise at 25-30mph they are more efficient than a prop boat with the same motor. On the other hand once you hit ~45mph they lose efficiency fast. Once you open the secondaries on a carb`ed jet you might as well toss your wallet in. Last year my 17' jet had a 305 chevy and it could burn 15 gallons in a couple hours if you tossed 4 tubes behind it, and a driver and spotter in it.
The cost of the marine parts works out to be around $1500. That's the motor plates, headers, PTO adapter, some Metric to SAE thread adapters so your gauges will work, and cooling system (you'll need to pick open or closed cooling). Assuming you are swapping a SBC/BBC boat, you can re-use the bell housing cover, and maybe even the whole rear mount.
Of course you'll need a running engine, but that price depends on your goals.
#36
10 Second Club
iTrader: (11)
badass. Buddy just pick up a 78 sidewinder with a berkley pump and all the goods just no motor its happeing. Think he is wanting to go with a 5.3 to be cheaper but hopefully turbo it this winter. How fast you think it goes?
Last edited by Zmg00camaross; 08-15-2011 at 05:55 PM.
#37
TECH Junkie
iTrader: (11)
Excellent! Another "just curious" question. How much are you giving up with a jet drive vs. an outdrive or v-drive? Haven't kept up with HP boating lately, but a couple decades back, they came out with an "Arneson" surface drive that looked to be the nuts for shallow lakes and all...
#39
Excellent! Another "just curious" question. How much are you giving up with a jet drive vs. an outdrive or v-drive? Haven't kept up with HP boating lately, but a couple decades back, they came out with an "Arneson" surface drive that looked to be the nuts for shallow lakes and all...
Fear of the unknown? That's about all I can figure...