300 airboat
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Senior User
Joined: Jul 2001
Posts: 352
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From: Palatka, FL
300 airboat
Hey guys,
I got an old 16' airboat with a blown engine. I was wondering what you guys thought about putting a carbed 300 on my boat? I've always thought a 300 powered airboat would be awesome. How long can a stock 300 maintain around 4000 rpms?
Boss300
Baby Blue '83 F100
3.70 auburn 9"rear
3 on the tree
300 inline six
2" lift with 31's
I got an old 16' airboat with a blown engine. I was wondering what you guys thought about putting a carbed 300 on my boat? I've always thought a 300 powered airboat would be awesome. How long can a stock 300 maintain around 4000 rpms?
Boss300
Baby Blue '83 F100
3.70 auburn 9"rear
3 on the tree
300 inline six
2" lift with 31's
Posting Guru
Joined: Mar 2001
Posts: 1,494
Likes: 0
300 airboat
I'm no pro, but I think you may want to go with an engine that has a shorter stroke length. A lighter engine would probably also be a good idea like a 3.8L v6. ...my two cents. Not that the 300-6 wouldn't work.
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
300 airboat
4000 shouldn't be a problem for a 300, other than the fact that the stock cam makes it fall on it's face @ 3600... Mine has seen 7000 on a stock bottom end... Maybe run a tranny with a mild O/D..... Or get a mild cam, and run it, just don't forget an intake scoop :-)
Evan MacDonald
82 F100 FlareSide 4wd
HD 300-6 9.5:1 CR
Clifford 270H cam
Hedman Hedder
SBC valved 66 240 head
Headlight Relays - Delanty Style
NP435(6.69 low)
NP 205
3.55 Geared ARB'd 9" & Trac-Locked TTB
31x10.50/15 Cooper Discoverer LT's
Evan MacDonald
82 F100 FlareSide 4wd
HD 300-6 9.5:1 CR
Clifford 270H cam
Hedman Hedder
SBC valved 66 240 head
Headlight Relays - Delanty Style
NP435(6.69 low)
NP 205
3.55 Geared ARB'd 9" & Trac-Locked TTB
31x10.50/15 Cooper Discoverer LT's
Post Fiend
Joined: Jan 2000
Posts: 5,860
Likes: 4
From: Metro Detroit (Redford)
300 airboat
Pitt Electric used to sell the 300 I6 for generators. I seem to recall their specs listed the maximum sustained RPM or power output RPM as around 3500. I copied the data and will look it up tonight and let you know if I find out anything. Actually, the engine would run most efficiently at the torque peak of 2000 rpm at WOT, though you may have to up the RPMS if a few more ponies are needed. Perhaps you should run it at the horsepower peak RPM of 3400. (If the engine is really old, these peaks may be different.)
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
300 airboat
Set it up with a clutch, and, there wouldn't be any problems idling, just disengage it...
Evan MacDonald
82 F100 FlareSide 4wd
HD 300-6 9.5:1 CR
Clifford 270H cam
Hedman Hedder
SBC valved 66 240 head
Headlight Relays - Delanty Style
NP435(6.69 low)
NP 205
3.55 Geared ARB'd 9" & Trac-Locked TTB
31x10.50/15 Cooper Discoverer LT's
Evan MacDonald
82 F100 FlareSide 4wd
HD 300-6 9.5:1 CR
Clifford 270H cam
Hedman Hedder
SBC valved 66 240 head
Headlight Relays - Delanty Style
NP435(6.69 low)
NP 205
3.55 Geared ARB'd 9" & Trac-Locked TTB
31x10.50/15 Cooper Discoverer LT's
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