Author Topic: SBC roller cam ID help?  (Read 285 times)

Offline matt b

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SBC roller cam ID help?
« on: August 06, 2018, 03:16:13 PM »
Looking for some help - freshening up my 406SBC and replacing the Summer Brothers gear drive with a regular double roller to help solve an oil weeping problem with the Enderle cover / Summers / oil pan fit. While heads are off to be gone over thought I might consider valve springs......but I have a mystery cam.....

Anybody have any idea what this thing might be...it's a reasonably healthy mechanical roller on a small base circle.

Thanks in advance!

Matt B




Offline Frontenginedragsters

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Re: SBC roller cam ID help?
« Reply #1 on: August 06, 2018, 07:22:27 PM »
Not sure what that is.
You might try to put it in the engine and record all the movement with a degree wheel and dial indicator.
Or you can send it to someone with a cam doctor.
Driving a Front Engine Dragster builds character and keeps you awake for a 1/4 mile at a time.
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Offline gregm784

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Re: SBC roller cam ID help?
« Reply #2 on: August 07, 2018, 09:12:02 AM »
I'm sure there is a shop closer, but Dougherty Racing Cams in Shingle Springs has a cam doctor that an spec out the camshaft for you.


3841 Quest Ct. Unit 11
Shingle Springs, CA 95682
530-672-2286
Greg
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Offline matt b

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Re: SBC roller cam ID help?
« Reply #3 on: August 07, 2018, 12:45:34 PM »
Thanks guys - called around today while I had a few minutes. Bullet cam guys called it as a  Comp Cam, quick ring to them had me the specs and cam card via email. Pretty dang great customer service from both folks.

FWIW cam is a custom grind mech roller, 652 int lift, 657 ex lift, duration @ .050 is 267 int and 278 exhaust with 114 LSA.

Appreciate the help!

Offline Paul New

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Re: SBC roller cam ID help?
« Reply #4 on: August 07, 2018, 01:02:10 PM »
Assumed it was a 114LSA looks like a good little blower cam!

Offline gregm784

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Re: SBC roller cam ID help?
« Reply #5 on: August 07, 2018, 01:46:32 PM »
Assumed it was a 114LSA looks like a good little blower cam!

I agree. It otta thump pretty good.  Nice detective work.
Greg
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Offline matt b

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Re: SBC roller cam ID help?
« Reply #6 on: August 07, 2018, 01:59:10 PM »
Thanks again - was a blower motor in its previous life - now 14-1 CR on Hilborn stack injection. Probably giving a little away naturally aspirated with that wide LSA?


Offline gregm784

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Re: SBC roller cam ID help?
« Reply #7 on: August 07, 2018, 02:32:05 PM »
I believe so.  i'd prefer it tighter, but if it's an index car, it should work ok
Greg
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