Camshaft recommendation

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Camshaft recommendation

Post  83Capri on July 27th 2018, 1:02 am

So I've been looking at cams for my next upgrade to my 472.

Weight 3439#
Comp ratio 8.5ish
78 lincoln motor with D0ve heads and adjustable valve train.
C6 trans with broader performance shift kit level 4
Rear gear 2.73 open with 255/60r15=27" tall
Carb 800DP
Hei ignition
Offenshauser dual port intake 1" 4 hole spacer
2.5" dual exhaust with cast manifolds and x-pipe

Down the road a turbo setup may be in the works but not yet, trying to lay a good foundation first.
Primary use is as a toy not looking for a thing too lumpy. I had thought about something more classic like a cobra jet cam.

Hydraulic flat I could do solid maybe. Budget is a concern but not world ending.

Thanks for any insight you may have
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Re: Camshaft recommendation

Post  dfree383 on July 27th 2018, 8:03 am

Is it a stock stock cam now? what springs are on the heads?

My First thoughts are tackle a few other performance gain areas first.

1) Gearing and Limited Slip Diff

2) Headers

3) Better Intake
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Re: Camshaft recommendation

Post  83Capri on July 27th 2018, 8:57 am

I agree, but I have some oil pressure issues and some collapsed lifters. So 8f I'm going to be in there I might as well.
Gearing I'm ok with for now highway rpm is 2500. I have a posi carrier and 3.08 gears for an 8.8" i just need a housing.
Headers are in the works for a front exit system but not this year.
Intake I would love to put a stealth on but budget, wife, kids. You know a little at a time. The offy intake is a CJ port and it kinda gives it that period correct vintage thing.

Stock cam now advanced to 106 intake centre line. Not 100% on what spring they are on the heads. So I put the stock d3ve springs and saved the others they are a little heavier and have a damper coil. Currently no issues to 5500rpm.
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Re: Camshaft recommendation

Post  dfree383 on July 27th 2018, 9:21 am

it your having oil pressure issues, it probably time for a teardown and rebuild.

If youre insisting on staying with the tall gearing and guessing you have a stock type convertor Id be thinking something on the small side with the cam.

205-210 @ .050 on the intake + about 10 degrees on the exhaust in the .500 lift range on a 108. plus upgrade the springs to a good performances single spring.

Ditch the manifolds and get a better intake too, you're leaving 50+ hp on the table IMO


Last edited by dfree383 on July 27th 2018, 9:25 am; edited 1 time in total
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Re: Camshaft recommendation

Post  dfree383 on July 27th 2018, 9:24 am

Something like this would be a good choice for an on the shelf cam

https://www.summitracing.com/parts/cca-34-234-4/overview/make/ford
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Re: Camshaft recommendation

Post  83Capri on July 27th 2018, 11:44 am

Yeah it is rebuild time this motor didn't have an easy life. It was a "coyote chaser" when I got it there was a hole I the door so you could open it tractor style tires and countless shells inside haha.
Thanks for the insight. That is around what I was looking at. I had to clearance my valve covers for my intake rockers so I don't want to go too much higher on lift, i loke my power btakes and im not sure tall covers will fit. Right now the engine is pulling 20" on the vacuum gauge at idle
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Call Scotty J

Post  capncruncher1965 on July 28th 2018, 1:35 am

Man give Scotty a call. Let him custom grind you a cam i promise you will not regret it. Scotty is the Man
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Re: Camshaft recommendation

Post  83Capri on July 28th 2018, 2:14 am

Yeah it might be the way to go. Looking at rebuild kits and those flat tops will bring my compression up to 10:1 without a trip to the machine shop
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Re: Camshaft recommendation

Post  supervel45 on July 29th 2018, 6:47 am

https://www.summitracing.com/parts/crn-353931/overview/make/ford

This one has a 114 LSA, should be good with boost. I would keep the 2.73's and loose the flat tops or run E85. You will likely be higher than 10 to 1 with them.

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Re: Camshaft recommendation

Post  rmcomprandy on July 29th 2018, 11:35 am

supervel45 wrote:https://www.summitracing.com/parts/crn-353931/overview/make/ford

This one has a 114 LSA, should be good with boost. I would keep the 2.73's and loose the flat tops or run E85. You will likely be higher than 10 to 1 with them.

It is obviously not simply a 78 Lincoln engine ... the short block probably but, with D0VE heads it is closer to over 9/1 compression ratio right now.

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Re: Camshaft recommendation

Post  83Capri on July 29th 2018, 12:27 pm

8.14:1. The block hasnt been to a machine shop since I had it.
Stock dished pistons 60 over.
Deck clearance is 0.070" in the hole
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Re: Camshaft recommendation

Post  83Capri on July 29th 2018, 12:34 pm

That being said in the interest of saving a dollar where its reasonable. The pistons are probable fine just a quick rebearing. I lost the rebuild tag so I'll have to measure some stuff.
I had read elsewhere 9n here about using cam bearing from an FE because they are wider but they have 0.004" more clearance how will that help oil pressure. I've been taking my reading at the back of the intake.
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Re: Camshaft recommendation

Post  supervel45 on July 29th 2018, 3:40 pm

83Capri wrote:8.14:1.  The block hasnt been to a machine shop since I had it.
Stock dished pistons 60 over.
Deck clearance is 0.070" in the hole

If you are going to run pump gas, I still think the lower compression would be better with boost.

Are you going to fuel inject it and or intercool, or blow straight into the Holley?

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Re: Camshaft recommendation

Post  83Capri on July 29th 2018, 3:43 pm

Figure I'll start with the holly until I find a donor truck. And go from there. I've got a gtp38 turbo from a 7.3 diesel. Looking for another. But I want to get the motor totally healthy first.
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Re: Camshaft recommendation

Post  supervel45 on July 29th 2018, 3:43 pm

rmcomprandy wrote:
supervel45 wrote:https://www.summitracing.com/parts/crn-353931/overview/make/ford

This one has a 114 LSA, should be good with boost. I would keep the 2.73's and loose the flat tops or run E85. You will likely be higher than 10 to 1 with them.

It is obviously not simply a 78 Lincoln engine ... the short block probably but, with D0VE heads it is closer to over 9/1 compression ratio right now.

That's what I was trying to say. He said he was looking at flattop pistons and I think the compression would be a little on the high side for what he was aiming for.

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Re: Camshaft recommendation

Post  supervel45 on July 29th 2018, 3:51 pm

83Capri wrote:Figure I'll start with the holly until I find a donor truck.  And go from there. I've got a gtp38 turbo from a 7.3 diesel. Looking for another. But I want to get the motor totally healthy first.

Be sure you get your boost fuel management squared away and the power valve boost referenced. Jet fat and timing low and work your way in. Fuel injection would be much easier, but the Holley can work.

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Re: Camshaft recommendation

Post  supervel45 on July 29th 2018, 3:52 pm

You will have to ditch the brass floats if you run much boost also.

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Re: Camshaft recommendation

Post  rmcomprandy on July 29th 2018, 5:43 pm

83Capri wrote: 
I had read elsewhere 9n here about using cam bearing from an FE because they are wider but they have 0.004" more clearance how will that help oil pressure.

FE cam bearings are completely different and won't work.

There are special WIDER cam bearings available for the 385 series engines, though.

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