engine swap
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
2X First Prince. If it were me I'd rather spend the money in a JY 300 engine rather than everything else around a 360/390. Since you already have a 240 you have the cylinder head that will wake up a 300 a bit.
Postmaster
Joined: Nov 2012
Posts: 2,806
Likes: 8
From: Langley, BC
That depends entirely on how much money you want to spend and whether or not you build the engine as a whole or simply throw parts at it. There's a guy with a 500hp NA 300 that he's spent an excessive amount of money building, or there's the typical guy who buy a cam, intake, and carburetor and gets maybe 225hp on a good day. The power you can expect therefore depends on your definition of "good."
Also, a 300's mounts are the same as an FE's.
Also, a 300's mounts are the same as an FE's.
Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
Indeed, so let's say OP does the basics. Carb intake cam exhaust. With a .030 over bore and good Pistons. 240 head that he already has. If he gets 225HP that's a good 100HP more than what his worn 240 is putting out. And the torque will increase even more.
OP, how does doubling your motor sound? Build a decent 300 and that's what you'll do.
OP, how does doubling your motor sound? Build a decent 300 and that's what you'll do.
Tuned
Joined: Oct 2014
Posts: 419
Likes: 7
From: Rimrock, AZ
I have to agree with what the majority is saying. I would definitely look into building a 300 I6. Great low end torque, unbelievably reliable and very low maintenance. Ive heard many horror stories of people abusing the little 300's and they just won't stop ticking. If I knew a 300 I6 would bolt up to my transmission I would have put one in there long ago.
Good luck with whatever choice you make.
Good luck with whatever choice you make.
Cargo Master
Joined: Mar 2014
Posts: 2,031
Likes: 72
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Last edited by hillcountryflt; Feb 24, 2015 at 02:24 PM. Reason: EDIT: Lousy grammar
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Postmaster
Joined: Nov 2012
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From: Langley, BC
I don't know about today but they sure used to.
Junior User
Joined: Jan 2015
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I hope I am not stepping on this thread to ask.....are there any "gotcha's" with the 240 to 300 swap in my '67 F-250? Is the flywheel a straight swap from the 240 to the 300? I am going to pull the trigger and order a 300 carbureted long block today. I see some options for oil sump location. Were there differences in the pump pick-up. I find it hard to believe that the pump location would have changed.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
John
Postmaster
Joined: Nov 2012
Posts: 2,806
Likes: 8
From: Langley, BC
I hope I am not stepping on this thread to ask.....are there any "gotcha's" with the 240 to 300 swap in my '67 F-250? Is the flywheel a straight swap from the 240 to the 300? I am going to pull the trigger and order a 300 carbureted long block today. I see some options for oil sump location. Were there differences in the pump pick-up. I find it hard to believe that the pump location would have changed.
The 240 and 300 are identical except for the crank, rods, and pistons. Nothing else needs to be worried about. Put the 240 head on the 300 though and you'll get better compression. While the engine is out of the truck, put some later year EFI exhaust manifolds on and you'll get an engine that breathes so much better than it would with the factory log manifold. Both of the previously mentioned tips are either free or cheap and they give you benefits all around from power to efficiency. Get extra fancy and use the 240 rods with SBF 331/347 stroker pistons and you'll have a quicker engine with less piston slap, but then you're talking money.
New User
Joined: Feb 2015
Posts: 2
Likes: 0
I have a 1969 360 3 speed and I would like to get a 302 but without changing transmission I was wondering if I could just change the bellhousing or just bolt it on? thanks.
Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
You need to change at least the bell. FE used a different pattern than SBF. A C4 or AOD would be the tranny to swap in.