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Discussion Starter · #1 ·
Hey guy's looking to the stoker gurus for suggestions for a cam for my 393.
this is what I got
393W caststeel crank H beamlongrod with forged pistons.
750 holleyhp
vic jr intake
Protopline 180cc aluminum cyclone heads/ 64cc chambers, 11:1
1 3/4" crites swap headers
C4 with TCI superstreetfighter converter
4.11's and 26X9 tires.
64' falcon sedan.
I don't want to rev the piss out of it 6500 rpm is plenty.
I know a custom cam will be recommended but I've gone that route before and would like to have some comparison to go by before I shell out the extra dough.
flat or roller ideas are welcome. Springs will be matched for whatever cam I get.
thanks Russ
 

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Solid roller...only thing I really know about. Look for something in the 240-250 duration at .050" lift, and probably .600-.620 valve lift. Street/strip car--I like the 112 lobe separation for a nice wide torque curve and a little extra top end power, but a 108 or 110 will work just fine...just make it a little more "peaky" so to speak.

That's pretty vague, I know...but without knowing a lot more about how you drive, what you like, and a lot of other stuff...it outta get you pretty close. What I described is what a friend and I built for his '63 Falcon. Same basic short block...6.200 rods instead of windsor rods...he runs a 244 duration @ .050" solid roller with .614" lift (both intake and exhaust) but with RPM heads....and a 112 lobe separation. Great little engine. Power from ~2200 to about 6200 or maybe a little more...smooth linear power curve, no spikes or "2 stroke motorcross bike" stuff...very responsive on the low end, and it does great with the 4 speed. I wish I had that car....
 

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I'm running a 247/253 @.050 .620/.620 110 lsa 106 Isl solid roller in a 393

It has plenty of steam at 6500, midrange torque is almost excessive for a street car
 

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I didn't like Comp...used their stuff for years, but just didn't like the grind I bought from them. Also tried Crane, not too bad...but later I upgraded to another cam from Cam Research. Lots of people badmouthed them, but I didn't have a single problem...and the cam I got from 'em was spot-on and works flawlessly. Picked up a little ET and MPH too.

Erson would be my second choice.
 

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Discussion Starter · #6 ·
Thanks for the replies, I have also been looking over allenman85's 418 combo. That much power makes me daydream. Then I realize I'd twist the car into a twizzle stick with that much umph..
 

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I have a similar combo and I used the recommendation of the Comp Cams help line and got a 243 duration, 560 lift 110 ls, custom grind hydraulic cam. Works good for my application.
 

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Discussion Starter · #9 ·
I called Comp cams today they recomended either the 35-772-8 XE286R solid roller or to call back in the morning to spec. a custom grind. What do you all think.
 

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Discussion Starter · #12 ·
Update, just to verify I sent comp a cam request via the internet. I changed the combo to a set of RHS215cc heads and sent it off.
Reply this morning came back XE286R for best overall performance. Hmmmm. same cam for a motor with heads that out flow the previous combo by more than 30cfm?
Maybe the 180cc heads are really that good? or is it that Comp feels that cam fits a large variety of combos? food for thought.
 

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I've used UltraDyne solid roller cams for my 351W in the past with GREAT results. Since they have closed their doors, other cam grinders have purchased their profiles and are now selling them. "Bullet Cams" web site still uses the Ultradyne name and "Lunati Cams" calls it one of their new lines. Look at the beginning of the Lunati part numer for the letters "UD", that means it's an UltraDyne cam. In the day, UD ground some very accurate cams and were in many race engines. If you can find one of their catalogs (old or new), you can see that they put effort into their stuff.
 

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k718couger:

Wicked ride


_________________
Tim

81 Mustang 351W/AOD 12.13 111.7
budget 87 octane street and highway driver

<font size=-1>[ This Message was edited by: qtrhors on 5/24/06 5:48am ]</font>
 
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