306 build, F-cam or mustang cam?

[Ourobos]

I have a 71 bronco I'm in the process of restoring. I currently have a 306 shortblock, balanced and blueprinted, h-beam rods, JE pistons. I plan on running a set of twisted wedge heads and a good dual plane intake, probably a holley 570 avenger (it's a street ride, no drastic offroading, maybe light towing). Question is on the camshaft.. I have a Ford F303 cam in the shortblock currently. I am trying to decide if I'd make more power, where I needed it (1000-4500 rpm or so) with the F cam straight up advanced 4 degrees or so, or run the stock HO mustang cam, straight up or advanced. Any experience?

 

[Viperwolf1]

You'd have much better low end with the HO cam. I run the HO cam 4 degrees advanced and it does a good job. Never tried it straight up so I can't make any comparisons there.

 

[Ourobos]

Thanks, I thought that might be the case with a powerband in the lower range.. And I can sell the F cam.

 

[StnePny]

I think a B, better all around or E for performance, I feel an F would be too big for light towing.

 

[broncnaz]

I'd go with a stock HO cam or a explorer cam especailly with light towing involved.. The ford alphabet cams are not well suited for a bronco. If anything the B cam would be as big as i would go in a bronco. The E and F cams just gives up way to much lowend. I know a lot of people(mustang guys) dont like the E cam as its power is to peaky

 

[blubuckaroo]

What is a 306? I know a 302 .40 over comes out to 306 cubic inch but have never heard of it referred to as a 306. Is this the same thing?

 

[Ourobos]

.030 over is a 306, so yeah same thing, .040 over is a 308 fyi

 

[1970mule]

so is a stock 302 .020 over?

 

[Ourobos]

Nope, 302 ci = 4.000" bore.

 

[73azbronco]

.02 over is a 304.6

.04 over is a 307.6

.02 over is not an easy piston to find, most likely off the shelf overbore is going to be 40 or 60.

Use the stock HO cam, you'll like it better than the alphabet cams unless you race.

 

[Ourobos]

OK, sticking in the stock HO cam, 4 degrees advanced.. Thanks