What to use an extremely narrow LSA cam in?

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oliver

oliver

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I was digging though my stash of cams for a spare parts build and found an odd one. I could visually tell the lobes had quite a bit of lift so I didn't even bother but I did throw it in the v blocks to get some specs on it.
Looks like it's a 250/245 duration at .050" tried to get duration at .012" and got 295/305 which is whacked but I got repeat results on multiple lobes. Lobe lift is .375/.345 which would be .550/.500 at the valve with lash as this is definitely a solid flat tappet. LSA is only 104!!!! I did not do the valve timing as I didn't want to spend too much time on it.
I almost want to slap it in my 340 with a set of hydraulic lifters and let it rip on stock rockers. Haha. But seriously, what the heck would this even be good for? 5500-6500rpm power band with a good exhaust system?
 
IIRC FI engines like narrow LSAs.
Disregard, I got it backwards.
 
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Something you want to try to keep cylinder pressure up in as well.
 
Any numbers on the rear of the cam? The exhaust is less on than the intake on both lift and duration, it sounds like one of the early supercharger cams that they tried to crutch using that tactic. But no way it work properly in a supercharged application on a 104, it would blow everything out the exhaust. Maybe 1/2 mile oval track or nitrous cam? What's the ICL?
 
I too wonder about tighter lobes. If I got a 108° lobe separation cam and go with a 106° lobe separation cam will there be a significant diference in powerband? Will it be more sensitive to detonation?
 
Garrett Ellison said:
Any numbers on the rear of the cam? The exhaust is less on than the intake on both lift and duration, it sounds like one of the early supercharger cams that they tried to crutch using that tactic. But no way it work properly in a supercharged application on a 104, it would blow everything out the exhaust. Maybe 1/2 mile oval track or nitrous cam? What's the ICL?
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Actually yes, after I wire wheeled it. Very lightly stamped 105, 375-344
 
In something you want to have as much early rpm torque as possible with an early peak hp rpm wise.
 
rumblefish360 said:
In something you want to have as much early rpm torque as possible with an early peak hp rpm wise.
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Almost sounds good for the street :lol:

408 swinger said:
Oval track, restricted intake rules.
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Besides the rough idle and probably 2-5" idle vacuum. Why would this be a bad street cam? Sounds like they are good since they will make peak power down low.
 
oliver said:
Almost sounds good for the street :lol:



Besides the rough idle and probably 2-5" idle vacuum. Why would this be a bad street cam? Sounds like they are good since they will make peak power down low.
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You already own it. Give it a try. Probably be outta steam by six grand. But how long you there on the street?
 
408 swinger said:
You already own it. Give it a try. Probably be outta steam by six grand. But how long you there on the street?
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I might stick it in my 340 when I swap it out for the 318. The 340 has a solid roller in it right now that pulls very hard from 4000-7000 and it's just too much on the street. I'd be totally cool with a cam that pulled only to 6000 if it had good torque down low.
12many said:
A case of
“Stop.... and go bye-bye” when dispensing of other traffic on the street, only maintaining traction is a challenge:steering:
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Sounds like fun
 
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