390 Opinions Needed
#1
390 Opinions Needed
My 72 Highboy has the original 360 and after finishing my truck restoration, I have been driving it for three months, Everything in or on it was replaced or rebuilt except the motor. I am just not satisfied with way it runs. Here's what I'm working with, Gears are 3.54 and C-6 Automatic.
Last week I bought a 68 Thunderbird Z code 390, 315 HP from a friend that had been stored in his barn, covered and protected since 1977, YES 1977, 36 years. it had 57,000 miles when the car it came from was wrecked. It was complete from the clutch fan to the flex plate including the old motorcraft 4 Barrel Carburator. The aluminum motor tag was still under the coil bracket bolt that identified it as being built in Jan 68 with a engine code of 343, after digging into ford info it confirmed what he had told me. I took it apart yesterday down to the bare block, it is for sure a 390 and the rod bearings were dated 11/67 with Ford logo on the back of them.
I already have a Edelbrock Streetmaster Intake and a New Holley 4160, 600 CFM Carburetor for the new motor. Where I need some help is in the choice of cam and headers I should use. Since I'm using the Edelbrock Intake, I am looking at the Edelbrock 2106 Cam, it has a lift of .460/.480 and duration of 272/282 and Headman Headers. It being a F-250 4-WD my choices on headers are more limited. One other question is for the complete gasket set, what brand do you recommend.
Thank in advance for you help.
Last week I bought a 68 Thunderbird Z code 390, 315 HP from a friend that had been stored in his barn, covered and protected since 1977, YES 1977, 36 years. it had 57,000 miles when the car it came from was wrecked. It was complete from the clutch fan to the flex plate including the old motorcraft 4 Barrel Carburator. The aluminum motor tag was still under the coil bracket bolt that identified it as being built in Jan 68 with a engine code of 343, after digging into ford info it confirmed what he had told me. I took it apart yesterday down to the bare block, it is for sure a 390 and the rod bearings were dated 11/67 with Ford logo on the back of them.
I already have a Edelbrock Streetmaster Intake and a New Holley 4160, 600 CFM Carburetor for the new motor. Where I need some help is in the choice of cam and headers I should use. Since I'm using the Edelbrock Intake, I am looking at the Edelbrock 2106 Cam, it has a lift of .460/.480 and duration of 272/282 and Headman Headers. It being a F-250 4-WD my choices on headers are more limited. One other question is for the complete gasket set, what brand do you recommend.
Thank in advance for you help.
#4
#5
Thanks for the info, it is not going to be a impact wrench, driveway rebuild. It's going to the machine shop tomorrow to see what all needs to be done, I can get by with reusing the stock pistons but I'm going 10 over and put new ones in, crank polished or cut, whatever makes it right. The machine shop is doing the heads, hardening the exhaust seats and changing everything that is not in spec. I had thought about buying a rebuilt longblock or a complete motor, but I decided if I do it myself I will KNOW for sure what has been done and replaced and not taking some rebuild mill's word for it. The cost is going to be more doing it like this, but Like I said above, this way I know what I have.
#6
Fel-Pro works for me and I buy American - no problems with over a dozen builds under my belt thank you.
#7
Thanks for the info, it is not going to be a impact wrench, driveway rebuild. It's going to the machine shop tomorrow to see what all needs to be done, I can get by with reusing the stock pistons but I'm going 10 over and put new ones in, crank polished or cut, whatever makes it right. The machine shop is doing the heads, hardening the exhaust seats and changing everything that is not in spec. I had thought about buying a rebuilt longblock or a complete motor, but I decided if I do it myself I will KNOW for sure what has been done and replaced and not taking some rebuild mill's word for it. The cost is going to be more doing it like this, but Like I said above, this way I know what I have.
FE Series Engine Specification Chart
Page 43, item 1130:
http://www.kb-silvolite.com/assets/s...te_catalog.pdf
Be sure you get a car 390 piston. Truck 390 pistons are actually 410 Mercury pistons and sit down the hole over .100. See item 1139 for that piston, listed as a 390 car and truck piston. Yea, if the car has a 410.... Note the compression height difference. Makes an 8.2 CR motor with no quench.
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