Camshaft selection......

h250es · Posted: Fri Apr 15, 2011 6:20 pm Post subject: Camshaft selection......

Hello!! I am fixing up my mud truck. I am rebuilding my 454 and trying to decide on the correct camshaft. I have a F250 chassis with 5.38 gears and and an automatic, I am putting a Ranger body on it to make it lighter. Approx. weight will be 5000 lbs.
I contacted comp cams they told me to use a 11-235-3, extreme 4x4 cam shaft. It seems a bit small. My target rpm is 5800 max. But do not want the engine to "nose" over too soon. I have a Edelbrock performer intake and headers, Sad part is I will be using the 1976 truck heads.

So I am looking for a second opinion.

Thanks,
Joe

Big Dave · Posted: Fri Apr 15, 2011 8:33 pm Post subject:

Camshaft won't be your limiting factor your choice of heads will be. No cam lobe profile I know of will make a Peanut port 195cc runner perform as well as the earlier 230 cc 396 heads will. (A better choice is the Chevelle head 3964290 = 396/402/427/454 ,69-70 ,2.06/1.77 ,100cc Oval port, or the 3993820 402/454 head from 1971 with 2.06/1.75 valves 113cc open chamber Oval port. You can find these heads for about $250 a set, but plan on rebuilding them (and inquire about returning them if cracked). Install 2.25 Intake and a 1.88 exhaust valve with a nice five angle valve job then ask about which cam to use.

By the way what is wrong with the Ford 460 motor with a set of better heads on it.

Big Dave

Skunkworkx · Posted: Fri Apr 15, 2011 9:49 pm Post subject:

VORTECPRO@GMAIL.COM (mark jones) is very good at porting GM heads and makes peanut port heads flow great.
I think he mainly likes the 731? heads...unsure.
Drop him a line or call him for some input...great guy making serious HP/TQ using GM heads...aftermarket heads and the numbers are wild Very Happy

10sec.et · Posted: Fri Apr 15, 2011 11:44 pm Post subject:

h250es · Posted: Sat Apr 16, 2011 10:18 am Post subject:

Thank u for the ideas. I realize the heads are my limiting factor, at this point. But must work at it one step at a time. But my search is on for better heads.

As for the 460, I need Horsepower and have a budget......... Currently has a 1975 455 buick in it w 1970 heads, 10:1 and a 268h cam, not quite enough.... Had a 1970 472 Cad in it, but not enough rpm, plenty of torque tho!!

Joe

Skunkworkx · Posted: Sat Apr 16, 2011 10:30 am Post subject:

It's funny this came up about the 460 Smile

We (friends truck) had an 86 Ranger on a custom body lift on a 60's Bronco frame with 9" ? of suspension lift and a 460BBF no shortage of power IMO.
Was called Danger Ranger and we raced at New Egypt Speedway,Cecil County mud hop,Budd's Creek (MIR)....fun days.
Back before Beef-T-Blue went pro we were neck and neck every month Smile

ran it in 3 classes (mini truck, 36" tire class,and 44" tire class)
I stand at 6' tall and the headlights were eye to eye with me and the 36's on...with the 44's you were looking eye to eye with kids on school busses....fun times LOL

h250es · Posted: Tue May 03, 2011 6:18 pm Post subject:

I located a set of 781 heads. Price was right, and a set of .260 dome pistons, so Open chambers are a must now.. Hopefully my combo will work out good!!

Thank you,
Joe

af2 · Posted: Tue May 03, 2011 8:20 pm Post subject:

Joe,
Get the heads done and have them flowed. Plug all the #'s(CI RPM FLOW #"S ETC) to any good cam company and they will inform you what you need.

Don't try and pick a cam then find out it is not the one.

jeep_406 · Posted: Tue May 03, 2011 10:11 pm Post subject:

Welcome to SMOKEmUP.com
I'd follow Adam's advice & select a cam after you know what parts you'll be using.