1970 F-500 engine
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i had a #1406 edelbrock 600 carb it had a 6.80 ratio rockwell rearend with 8.25.20 tires and a 4speed it got 8mpg and weighed 14,000 pounds with no one on it i know at 70mph it was running 4000 rpm's thats to high it was best at 55 and 60 mph because of the gearing the best thing was when i put the edelbrock carb on in stead of the factory holley with the govenor that made it like a different eng
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Joined: Nov 2005
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ya i went threw the brake's on my bus i spent aroud 700.00 on them doing it my self that stuff is hard to get i got most of my brake stuff from napa it just take's a while to look it all up and finding someone who know's what your talking about lol good luck
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Freshman User
Joined: Mar 2005
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I have a couple more questions:
1. Will I be able to use the carb from the 330 with the 390? It was tuned pretty well. If I can't, I have a stock (rebuilt) carb from a 1985 460. Will this work?
I haven't gotten around to calling about the engine. I think there was some confusion - I did order a 390 FE engine not an FT engine, but did specify one built for a truck.
2. I'm looking at buying a new intake manifold and headers. Can someone recommend one? My friend (who is a chevy guy) recommended an Edelbrock performer.
3. I think the transmission is an np-435 (at least the shifting linkage looks similar, haven't pulled it yet). If an np-435 bolts to an FT/FE bellhousing pattern, then I assume that the clutch is a standard truck unit?
Thanks for everything.
Chris
1. Will I be able to use the carb from the 330 with the 390? It was tuned pretty well. If I can't, I have a stock (rebuilt) carb from a 1985 460. Will this work?
I haven't gotten around to calling about the engine. I think there was some confusion - I did order a 390 FE engine not an FT engine, but did specify one built for a truck.
2. I'm looking at buying a new intake manifold and headers. Can someone recommend one? My friend (who is a chevy guy) recommended an Edelbrock performer.
3. I think the transmission is an np-435 (at least the shifting linkage looks similar, haven't pulled it yet). If an np-435 bolts to an FT/FE bellhousing pattern, then I assume that the clutch is a standard truck unit?
Thanks for everything.
Chris
Post Fiend
Joined: Jan 2003
Posts: 8,600
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From: Iowa
1. I'd use a new Holley, but that's just me. Of the two choices, I think you'd be better off with the carb from the 460. Read the plugs and jet accordingly. You might have to do some other tuning to it also, like the power valve and vacuum secondary spring (if so equipped). Big heavy trucks typically like a rather stiff vacuum secondary spring.
2. I recommend for this application you go to the junkyard and get a 4 barrel intake manifold off an F250 truck with a 390. If the carburetor is on it too, bonus. On a big truck like this, weight is not really an issue. The cast iron 4 barrel intake will save you a lot of money, flow better than the regular Edelbrock Performer, and will seal the intake gaskets better than an aluminum manifold.
3. Cant tell you much here, all I've run are automatics. I think there are some differences with the pilot bearing though.
2. I recommend for this application you go to the junkyard and get a 4 barrel intake manifold off an F250 truck with a 390. If the carburetor is on it too, bonus. On a big truck like this, weight is not really an issue. The cast iron 4 barrel intake will save you a lot of money, flow better than the regular Edelbrock Performer, and will seal the intake gaskets better than an aluminum manifold.
3. Cant tell you much here, all I've run are automatics. I think there are some differences with the pilot bearing though.
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Joined: Sep 2004
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From: Texas
FT's ran about 7.5 compression, truck 390s ran from 8.2-3 up to around 8.6 (I'm finding diffrent numbers diffrent places) and Automotive 390s ran 9 to 9.3. As for the heat, a stock automotive 390 will make more, but not significantly. A Bus was ment to drive under extream conditions. Nail the gas, drive a block, stope and idle with the fan at low rpm. Nail the gas again, stop another block away. Rinse/repeat. Unless you'll be doing that daily, then there shouldn't be a problem.
Transmission could be an NP435, a T18, or it could be a clark. The clark will have a granny gear under reverse. its a 5 speed, but the granny isn't were 1st is, so it shifts like a 4 speed. for the others, the T18 will have a cast iron top, the NP435 will have an aluminum top cover
Transmission could be an NP435, a T18, or it could be a clark. The clark will have a granny gear under reverse. its a 5 speed, but the granny isn't were 1st is, so it shifts like a 4 speed. for the others, the T18 will have a cast iron top, the NP435 will have an aluminum top cover
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Freshman User
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The transmission looks like an NP-435 (though I have no idea what a t-18 looks like). I belive it is a NP-435 because of the ball-style shift linkage.
It's a 4 speed with a granny low and the same pattern as the t-18 in my F-250.
It's a 4 speed with a granny low and the same pattern as the t-18 in my F-250.
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Fleet Owner
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From: Brentwood,CA
jp,
it is a NP 534 the 435's big cousin. the 460 carb is a 4bbl right? so then it is a spread bore. you won't be able to use that. i would use a stock castiron 4bbl. also you must retain your rocker shafts and push rods. those do not come witht the new engine. so you will also need to learn how to set preload , using new pushrods of various sizes.
it is a NP 534 the 435's big cousin. the 460 carb is a 4bbl right? so then it is a spread bore. you won't be able to use that. i would use a stock castiron 4bbl. also you must retain your rocker shafts and push rods. those do not come witht the new engine. so you will also need to learn how to set preload , using new pushrods of various sizes.
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Freshman User
Joined: Mar 2005
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Yes, the engine came in last week, but I haven't touched it with family in town and everything.
I ordered the flowtech headers from summit...searched and couldn't find any problems with them.
Thanks
I ordered the flowtech headers from summit...searched and couldn't find any problems with them.
Thanks