360 vs 390
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Elder User
Joined: Sep 2009
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From: nor cal
360 vs 390
what's the pros and cons they are both great engines, ive got a 360 right now and im just wondering if i should stay with it..
ill be doing a-lot of trails, mud drag and just strait mud with a some street..
what do you think?
ill be doing a-lot of trails, mud drag and just strait mud with a some street..
what do you think?
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Elder User
Joined: Sep 2009
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From: nor cal
what's your carb cfm? good response?
More Turbo
Joined: Nov 2007
Posts: 703
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From: Western Washington
I don't have any overheating issues and I'm running a Derale 16'' Tornado electric fan. I'm running an Edelbrock 1411 750 CFM carb that has been rejetted and has really good throttle response. I like my set-up.
OJ
OJ
Postmaster
Joined: Jul 2003
Posts: 3,934
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From: iowa
go 390, some people spend $1000 for a stroker and theres no need when you start with a 390. Some people crack me up with the 302 to 347 stroker, when they can use a 351w, space and weight are different stories.
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Elder User
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From: nor cal
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Junior User
Joined: Jun 2004
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From: Richardson, TX
If both were sitting on the shelf for the same price, there's no reason not to choose the 390. If you're thinking of doing a build-up, then it would depend on your budget (i.e. if you just want to freshen-up your 360 and add a few bolt-ons versus starting over with a new block or swapping in crank/rods/pistons into your current 360 block). It will really depend on your goals, etc. FWIW, I currently run the 360 stocker in my '69 F-100, and it's getting a built 390 very shortly.
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Definately 390. But I guess it just depends on what your goals are, how much performance you want and can later add, and how much you want to spend. Judging from what you said your planning on doing, I think you will be a lot happier with the 390.
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Elder User
Joined: Sep 2009
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From: nor cal
well alright then, seems like theres a big difference that im missing out on between the 2...what's the score 0 to 6
why would ford stuff a 360 in a f250 anyway, did the 360 only have a lower torque peak??? BTW when i was tearing down the front end of my truck i seen the cylinder head casting i was surprised to see D2TE-AA heads.
I would like to port these out to 2.09 intakes and 1.65 exhaust,
after i clean these head up. if anyone has any experience on porting these please share
i dont have any candidates to practice on and i know there's a certain technique on porting i just haven't got that far yet..
why would ford stuff a 360 in a f250 anyway, did the 360 only have a lower torque peak??? BTW when i was tearing down the front end of my truck i seen the cylinder head casting i was surprised to see D2TE-AA heads.
I would like to port these out to 2.09 intakes and 1.65 exhaust,
after i clean these head up. if anyone has any experience on porting these please share
i dont have any candidates to practice on and i know there's a certain technique on porting i just haven't got that far yet..
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I'll bet many people have wondered why ford put the 360 in the F250's. I believe they put the 390 in some of them. My old 76 F250 2wd had a factory 4V 390. My only guess is that maybe the 360 lugged a lil better but that's probably marginal at best and just a guess.
Post Fiend
Joined: Mar 2004
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From: Union, Washington
I've had both in the same truck and the 360 doesn't come close to the 390 in any area.
Post Fiend
Joined: Mar 2004
Posts: 6,056
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From: Union, Washington
The 360 was stock as was the 390 was, both were also 2 barrels. The second 390 was my creation, a 9 to 1 compression 390 with 390GT heads and intake with a GT carb reworked, by me. There was a recurved dist (me again), a mild RV cam, 256° with .525" of lift at the valve and GT exhaust manifolds (a real bitch to make fit) with a 2 1/4" dual exhaust with a crossover. A 3 engines were up run in my old 1968 F250 with a C6 and 3.73 gears with stock tires. The stock 390 not only out pulled the 360 but would mpg better. My engine build would out pull the guys running 460s even. Run over the 5,000 foot mountain passes with the camper in the truck and the race boat in tow and do it in high gear. The stock 390 require 2nd gear as did the 360 but it was on the floor a lot sooner.
The numbers on the stock engines tells the whole story.
360 - 215 hp @ 4400 and 327 ft/lbs @ 2400
390 - 255 hp @ 4400 and 376 ft/lbs @ 2600
Beside the 30 extra cubic inches the horsepower and torque numbers are better.
The numbers on the stock engines tells the whole story.
360 - 215 hp @ 4400 and 327 ft/lbs @ 2400
390 - 255 hp @ 4400 and 376 ft/lbs @ 2600
Beside the 30 extra cubic inches the horsepower and torque numbers are better.
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