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  Need cam for 4X4 offroad/street...Help!

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Author Topic:   Need cam for 4X4 offroad/street...Help!
Ryan Wilke

Posts: 2125
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 02-25-2005 03:14 PM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
I'm confused........ I was looking at one cam manufacturer specs (for a 4X4 application) & they suggest a duration @ 050 of 216*/224* with a 551" lift with 115 lobe separation. But then another suggests a 206*/214* duration @ 050 with a lift of .432"/453" and a lobe sep of 111*. Why is there such a difference for the same application? Does anyone have a favorite or a suggested cam?

4X4 1/2 ton long box, 351 cuin; 9.5 CR; 1.94/1.5 valves; 6000 redline; 1200 or 1500 stall converter; 44" tires; 4.11 gears. Not a daily driver...but will drive on the street to the mud holes to play.

TIA, Ryan

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Posts: 43790
From: Saco, Maine
Registered: May 99

posted 02-25-2005 03:25 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
If you ask 20 different people for a cam recommendation, you'll get 20 different answers. Personally, for a cam that's going in a engine I'm hoping to get a lot of miles with, I like to go easy on the lift, because the higher you lift the valves off their seats, the more stress you put on things like valve guides and valve train components.

Of course, if you take my opinion and $2.00, that'll buy you a cup of coffee...

'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip

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Ryan Wilke

Posts: 2125
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 03-01-2005 05:07 PM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
Thanks for the reply, Steve.

Of course you are correct, but I thought I'd ask anyway...since even the manufacturers seem to be all over the charts on this.

Have a good one,

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Posts: 1237
From: Greenbrier, TN USA
Registered: Oct 99

posted 03-01-2005 09:38 PM     Click Here to See the Profile for DidgeyTrucker   Click Here to Email DidgeyTrucker     Edit/Delete Message   Reply w/Quote
I've built two different motors for two different trucks and used the same type cam in both and was very pleased.

The first was a 1970 spec 429 that I'm still running (216,000 miles) in my '78 F-150 long bed supercab.

The second is a 1971 351C (2v heads) in my 1966 F-100 short bed.

Both trucks run automatic transmissions and are driven on the street - in the range I like to "stoplight to speedlimit"

My cam of choice is the crane RV type cam for these engines. It is a high lift short duration cam and is most efficient at highway speeds.

The "sweet spot" on the cam in the '66 seems to be around 80mph. I'm barely touching the gas pedal with 3.25 rear gears.


Tracy M&M #245
MAC OS9.1 & 10.3.8/ Earthlink DSL
1956 F-100 Panel w/429 (3.50 9")
1966 F-100 SWB w/351C (3.25 9" - 3.70 posi for Saturday nights)
Music City F-100's,
1965 GT-350 S/C (2.78 1st & 3.70 TracLok 9")
Music City Mustang Club
Don't focus on the destination....make the JOURNEY the adventure
Visit my Web site: DidgeyTrucker's Website

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Posts: 26513
From: Lyons, IL, USA
Registered: May 99

posted 03-06-2005 04:31 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Is it a 351C or W?
FI or carb?

Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28

The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"

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