Nice. That seemed like a straight forward build. Sounds like the truck will have plenty of power to get out of its own way now.
Time to dive into the engine rebuild in more depth. This project series has started in the May issue of Grassroots Motorsports. To get all the details, you can subscribe right here.
We talked to Curt Vogt from Cobra Automotive about our engine, as he knows Ford engines very well. He suggested that we rebuild our original engine with a crankshaft and pistons from a 390 cubic-inch engine, thus effectively giving it 390 cubic inches of displacement and a bit more torque to haul cars around.
That sounded like a no-brainer to us. Curt even had the correct crankshaft in hand and we were planning on replacing the pistons when we bored the engine anyway.
We did learn something the hard way: A crankshaft for a car with an automatic transmission is slightly different than one on truck with a manual transmission like ours. We ended up doing some emergency machining on the pilot bushing to make everything fit together correctly. Had we known this going in, we could have planned for it.
At the same time, we decided that rather than rebuild the heads and replace the cam, we would use an Edelbrock Top End Kit. We had used one of these amazing kits on a past project and found the power claims to be spot on when tested on the dyno.
On this kit—#2044—Edelbrock claims 418 horsepower and 434 lb.-ft. of torque. That estimate is based on a stock 390 engine, and would effectively double the power our rather anemic 360 was putting out. Summit Racing has it listed for $2298.37.
The kit includes Edelbrock aluminum heads–which are lighter and put out much more power than stock Ford heads, a cam, intake manifold, timing gear and chain, lifters, and gaskets.
We balanced and rebuilt the bottom end of the engine to stock clearances using ARP fasteners.
All that was needed to finish installation was a Edelbrock 750 cfm carburetor, MSD ignition, Pertronix distributor and a set of Hooker headers.
Nice. That seemed like a straight forward build. Sounds like the truck will have plenty of power to get out of its own way now.
Should have a nice amount of pep now. Part of me also says that, for what the truck is doing, a diesel would be better suited, and probably squeak out a few extra MPG's
What about the driveshaft? Are you going to rebuild it/upgrade it for double the power? You know, them driveshafts are a potential failure point, or so I hear.
A LONG time ago, I had a guy that worked with me that had a mid 70's Ford 4x4 with a 390 4speed combo. Great puller - used to pull off road jeeps, trailers, and snowmobiles.
Aluminum heads will be a nice weight saver
This is just your run of the mill 360 FE engine, right? Because I already have a 390 in Fergus and the power quoted for the kit is......tempting. Also, the Summit link seems to be broken.
mazdeuce wrote: This is just your run of the mill 360 FE engine, right? Because I already have a 390 in Fergus and the power quoted for the kit is......tempting. Also, the Summit link seems to be broken.
Yup, a as long as they are within the FE family, the parts interchange. Also, the FT family is still the same as an FE, just with a truck designation and usually much more utilitarian cam and intake setup
In reply to mazdeuce:
Here you go. Linked back to to the forum for some reason (Someone forgot the https:// and just used www.) I've made that mistake a few times since the two or so forum tweaks ago.
Couldn't you have used a 427 crankshaft and had a nice, mild 428?
Looking at the specs on the cam in the kit at Summit's website the cam seems just a bit lumpy for use in a truck like that. Would work great in a car but you need low down grunt. Going bigger on cubes and less on cam is the way to go. Granted the stock cam is not enough even for a 360 let alone a 390 but something in between.
mazdeuce wrote: This is just your run of the mill 360 FE engine, right? Because I already have a 390 in Fergus and the power quoted for the kit is......tempting. Also, the Summit link seems to be broken.
Hey, you have enough on your plate right now. You have to finish buttoning up our, er, your motor and putting that van back on the road.
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