401 Build.. NEED HELP!!!!!! Mystery cam problem.

[jeepsr4ever]

You have 9.5-1 compression you have to be carefull which cam you use. Your dynamic compression may require premium if you dont run some quick numbers. Go here http://www.kb-silvolite.com/calc.php?action=comp and put in your cam data.

[Revelc]

I didnt build it so I dont know specifics. So I dont know what my dynamic compression would be. I wish I had a fellow Jeeper out here in Colorado springs with a brain to pick ( and a cherry picker would be nice too ).

This cam looks promising saying it works best with 9.5:1

AMC - 401
Performance level 2 - Power Compu-Pro - These cams provide excellent low end and mid-range power and extended rpm range for spirited
street and off-road driving.
INT/EXH - Dur @ .050” Lift: 210°/220° RR: 1.6/1.6 Gross Lift: .450”/.475” LSA: 112° RPM: 1500 to 4000 Redline: 4500


http://www.crower.com/amc-290-401-co...m-270-hdp.html

I think it will do fine if I read the description correctly. With the torque of a 9.5:1 401 I would think I wouldnt need a stall converter with this cam.

[jeepsr4ever]

That performance level 2 cam would work well with a Edelbrock carb and performer intake. Or a vaccum secondary Holley.

[Revelc]

Thank you guys for your help. Ill be placing my order in the next few days.

If you dont mind one more question, how much hp and torque can I expect with this set up?

[jeepsr4ever]

If your not pushing 350hp you dont have oil in the pan..HA!

[Revelc]

If your not pushing 350hp you dont have oil in the pan..HA!

Oh man that wouldnt be funny.

I actually learned a leason when I was breaking in a new cam in my recently deceased 360. I started it up and heard lifter clatter. I had no oil pressure. I primed it with an old distributor and everything....

But what I didnt do was make sure the distributor was completely seated

It was still meshing enough to run but wasnt engaging the pump.

From now on its check. Then triple check every detail. Because they will eat our lunch if we dont.

I think at 350 H.P. Ill be a lot happier with the new 401 over the anemic 360 it had before. Thank God all of those expensive aftermarket components are inter-changeable

What does it really take to squeeze out 400 ponies from these babies? I shouldnt be too far off in mods to get there... at least I hope.

I have the 670 Truck Avenger
Edelbrock Performer intake
MSD ignition
9.5:1
a little gasket matching and a 5 angle cut
with the above mentioned cam


Future plans are a 50 hp shot of juice and 2.5" duals or 3" pipes with no mufflers or cat.

What other mods can crest that number aside turbo/super/nitro?

Any one have destop dyno?

I would want to have a streetable cam without a big stall if it was imperative to swap out to get those numbers.

[tufcj]

400HP from a 401 isn't too hard. But for 4-wheeling, torque is the number you should be after, not HP. Big torque close to idle is what makes a Jeep move. In going for HP, you're going to sacrifice torque. It's a trade off, engines with big HP numbers usually have less torque (except turbo or blower), engines with big torque will have a little less HP. In drag racing, torque makes ET, HP makes MPH. The torquey car will come off the line harder but not have big MPH, the big HP car will be faster at the top end but be slower off the line.

Check out this article: http://www.carcraft.com/techarticles...s/viewall.html

Bob
tufcj

[Revelc]

I ordered the Crower cam

45241

INT/EXH - Dur @ .050” Lift: 212°/220° RR: 1.6/1.6 Gross Lift: .464”/.488” LSA: 112° RPM: 1500 to 4500 Redline: 5000


I previously posted about

I got it in today and ITS THE EXACT CAM THAT I HAVE HAD SITTING ON MY DESK FOR WEEKS NOW!!
I could have left the whole engine together and swapped it out by now
The part numbers are the exact same.
I called to check the numbers just in case but the cam guys at Crower were all out for the week.
Oh well, back in it goes.

Just to confirm since I have this cash freed up for the return.

I should not need a stall converter for this cam size with my specs right?

[jeepsr4ever]

!!!