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Best 351w cam for torque?

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Angelo Voltura

Re: Best 351w cam for torque?

I wouldn't think the difference would be all that much then. The comp specs I pulled were from their website.

That being said these are all excellent options, should be a good running engine.

1978 F150 351W
1979 F150 "410M"
1979 F100 302
1979 F250 400
1987 F150 300
1990 F150 302
1991 F150 300
1995 F150 (1985 clip swapped) 300
1997 F250 351W

LARIAT 85

Re: Best 351w cam for torque?

Angelo Voltura wrote

I wouldn't think the difference would be all that much then. The comp specs I pulled were from their website.

That being said these are all excellent options, should be a good running engine.

I just checked to make sure, and the numbers on the Comp Cams website matched the numbers I posted:

https://www.compcams.com/xtreme-energy-206-212-hydraulic-flat-cam-for-ford-221-302.html

Lucille: 1985 Ford F150 XLT Lariat

*Colors: Dark Canyon Red exterior, Canyon Red interior
*Engine: 5.0, CompCams 31-230-3, "Thumper" E7 heads, Edelbrock Performer intake, Autolite 4100 carburetor, DuraSpark II ignition, Thorley Tri-Y headers, Flowmaster dual exhaust, H-pipe.
*Drivetrain: AOD transmission, 3.55 gears, 2wd.

Blacktop

Re: Best 351w cam for torque?

In reply to this post by Gary Lewis

What do you think the chamber volume is? 58, 60 or 64cc?

1984 F150 XLT short bed 4x4 351w 4speed manual
1980 F100 long bed 2wd 300-6 3speed manual project truck
🇬🇧UK based truck enthusiast🇬🇧

Angelo Voltura

Re: Best 351w cam for torque?

That is a 60.4cc chamber unless they have been milled.

1978 F150 351W
1979 F150 "410M"
1979 F100 302
1979 F250 400
1987 F150 300
1990 F150 302
1991 F150 300
1995 F150 (1985 clip swapped) 300
1997 F250 351W

Jacob84

Re: Best 351w cam for torque?

In reply to this post by LARIAT 85

You're right, thanks for the correction, got the part #s mixed up on the 250 cam

the specs you have for the other two cams are very close to the specs I have, couple thousanths here or there difference (manufacturer differences)

Jacob,
84 F150 base model, New 95 roller 351w with 5.0 ho roller cam, Summit Racing Max EFI 500, and other toys, MSD DIS, C6 trans, 9 inch rear 3.50, reg cab, long bed, 4x4. 33s, 2.5" Rough Country lift.

Blacktop

Re: Best 351w cam for torque?

In reply to this post by Angelo Voltura

Thanks, they've had a couple of thou taken off them to clean them up but that's all.
If I was to use these heads I would need to grind out the humps from the exhaust ports and would probably fit screw in rocker studs too. Or might just be easier to fit the edelbrocks instead.

Alan

1984 F150 XLT short bed 4x4 351w 4speed manual
1980 F100 long bed 2wd 300-6 3speed manual project truck
🇬🇧UK based truck enthusiast🇬🇧

LARIAT 85

Re: Best 351w cam for torque?

In reply to this post by Angelo Voltura

Angelo Voltura wrote

According to paper they are almost identical.

The standard 5.8L 2V motor used a different cam from the 5.8L 4V H.O. motor:

Ford 5.8L (2V) cam:
260/260 seat to seat duration
.416 intake valve lift, .416 exhaust valve lift
114 degrees lobe separation

The 5.0L (2V) cam is even worse:
.184 intake, .192 exhaust @ .050
.379 intake valve lift, .395 exhaust valve lift
107 degrees lobe separation

Blacktop

Re: Best 351w cam for torque?

Wow, I should see a helluva difference between the 250 cam and the current 5.8L 2v cam then!!

Alan

1984 F150 XLT short bed 4x4 351w 4speed manual
1980 F100 long bed 2wd 300-6 3speed manual project truck
🇬🇧UK based truck enthusiast🇬🇧