Going a different direction with my project truck, selling the parts I've accumulated thus far.  Prices are plus shipping.  Pictures available via email on request. 

Edelbrock Performer RPM intake (black): $425
Edelbrock Streetmaster 390 intake: $200

Other stuff:

Factory adj rockers, multiple sets of shafts $200
Aluminum rocker shaft stands with endstands $60
fabricated valve covers $100
Summit RTR distributer (cast gear) $75
Performance distributer (Bronze gear) $100
Cloyes timing chain $40
timing covers, water pump, flywheel/pp, pulleys, factory oil pans, cast bellhousing, ARP head and main bolts, pushrods, etc. -ask

Local Bay Area guys:

Two 390 truck blocks $200ea (one 4.050, the other 4.080)
4.080 cast pistons/'Lemans' rods with ARP bolts/0.20 390 crank $350
Iron heads C8AE-H and D2TE $150/set
Hedman truck headers, exhaust $150

Rather than starting a dozen threads related to this project I'll just start one and ask questions as I go along.

Picked up a 1970 F250 360 C6 Dana 60/4.10 gear truck last month.  Stock aside from aftermarket wheels.  Goal is to build a fun street truck that can be a shop truck for projects.  Don't envision towing or hauling heavy loads often.  I like the idea of a powerplant that is comparable or better to the new F150's with the 5.0 or ecoboost, while being 800lbs lighter.   

I found a local guy with a pile of 390 stuff from his highboy build that he had converted to a 460.  Got a package deal that included essentially two 390's and a bunch of parts. 

The first 390 is a complete motor that reportedly had two collapsed lifters when he pulled it:

~4.070 bore when measured with calipers
Lemans rods, 10:1 compression, unknown make for pistons
small custom truck hydraulic roller cam 208/213 @ 0.050 112 lobe separation, .520 lift
Howards cams (Morel?) Hydraulic lifters
C8-AEH heads 2.06(?) intake valves, 1.56 exhaust
Edelbrock rpm intake
factory adjustable rockers
performance distributers duraspark with bronze gear
ARP hardware

The other is a virgin 390 short block with 4.050 bore
included was a set of unused/rebuilt D2 heads

Among the other parts:
Summit RTR distributer
Hedman longtubes

I'm considering four different ways to go about the build: 

Rebuild as 390/iron heads CJ valves with different/new custom roller cam
390/custom cam/TFS or other aluminum head
445/iron heads
445/TFS heads

Questions to follow.

Hi Guys,

I recently picked up a 1970 F250 with 360/C6 with the intention of a fun street/shop truck build.  Top on the list of things to do is address the anemic 360.  I haven't decided on full scope of build as yet.   

Found a local gentleman who had swapped to a 460 in his highboy extended cab 4x4 build.  I purchased two 390's from him, one is a core and the other he pulled from the truck after two lifters collapsed. 

My question is cam sizing; he stated it's a custom hydraulic roller and the cam card lists:
gross valve lift intake: .520 exhaust 0.520
Advertised duration in: 272 ex: 280
duration at 0.050 in: 208 ex: 213
lobe seperation 112

Is this a bit on the small side for a street 390?  It was used in his ~6500lb truck, my f250 is roughly 4400lbs.  Should I consider replacing with a different cam during the rebuild process?

I'll have more questions to pose as I tear the motor down and consider swapping parts.