Got this old small block chevy roller cam and trying to find out the manufacturer or the specs. From the engraving and measuring the lobes I've confirmed it's. 410" lobe lift but don't have an old block to check duration or LSA. I think the letters CT point to the manufacturer but have so far come up blank on it. Any help anyone? Sent from my F3311 using The H.A.M.B. mobile app
Once again it would be easier if you put where in the world are located Sent from my SM-J737T using The H.A.M.B. mobile app
England, but can't see what difference it makes? It's for a Chevy motor. Sent from my F3311 using The H.A.M.B. mobile app
If it was a custom grind about all you can do is measure it... You asked this question a couple of years ago too.
.410 on the cam would be over .600 with 1.5 rockers. Anyways, wasn’t, isn’t there a company called Cam Technique? Google sucks on my phone so can’t confirm or not
Done that, still looking for answers, maybe an old catalog. Sent from my F3311 using The H.A.M.B. mobile app
Hadn't thought of that. Thanks for some positive input. Sent from my F3311 using The H.A.M.B. mobile app
Cam experts? We all claim to be. This is pure conjecture but I would guess that given that it is hand lettered and not stamped that it is most likely a regrind. Nothing wrong with that. I would assume that you also have no access to a lathe. I can probably come up with a block but shipping is gonna be a bear. LOL
Google the numbers. Lots of flaky sites. It does look like that grind was used on Harley cams too. 90% of the hits are yours though. Mike
The reason I asked is to send you to someone local,most cam companies offer a service where if they 2 lobes Intake and exhaust they can cam doctor the cam for you.
A free block.....I'll be round later just done a comparison and some meauring with another cam I have and it appears this has a small base circle which points to either a regrind or for a stroker motor I think. Didn't know you could check lsa or duration on a lathe...tell me more. Sent from my SM-T550 using The H.A.M.B. mobile app
Fit a degree wheel to the cam and divide by two... Hadn't thought of that. Sent from my F3311 using The H.A.M.B. mobile app
HI,some info on Cam Techniques milford CT. then FLA. David Generous. Very Smart guy. Was engineer at Crane, told me he wanted to be close to home. very successful,small shop, clean , very helpful. . his gig was custom cams. he was into fixing the cam that didn't work. very big on 1600-2300 pinto motors for racing. I installed many of his cams so i recognized the etch.. i still have one in my chevelle, from 1982. he moved to fla. passed away 2018.
Did you see my reply you can take it to somebody and read the cam Sent from my SM-J737T using The H.A.M.B. mobile app
If you find someone with a cam doctor they can read the camshaft, if it was a custom grind Cam that usually in grave the numbers in the end Sent from my SM-J737T using The H.A.M.B. mobile app
Hire a machinist. The cam chucks up in a lathe and you turn it and measure. Just like you would in an engine block with a degree wheel. Only more accurate. @dreracecar I never would guessed that. I have not even had an Isky in my possession in 30 or so years. This is not a dis to the company or Mr Iskenderian but it seems backward for a modern manufacturer to do that. It shows a great deal of pride in product.
Most cams I’ve seen are etched. Those look like like lobe catalog #s to me. -8 is likely the lsa(108°) So, I would assume intake is cat# 410 Exhaust is cat# 410L Lsa cut at 108° Most cam companies have lobe catalogs on line to search through. They “name” the lobes with a number/ letter . Usually based on lift. The catalog will give duration numbers based on the lobe name/ designation. As stated, most cam companies have a machine that will “read” the lobes and locations and print a spec card. If using it is the plan go this route. Are you concerned with the mechanical characteristics of the cam, or more concerned with providence? Don’t take that wrong... some people want to have parts with history or a story with markings as proof. Hope this info helps.
You can put it in a couple of "V" blocks. Then attach a degree wheel. Probably need to be near the end of the table so the degree wheel can clear. Then get a magnetic base and a dial indicator.Hopefully a 1" travel indicator. That should let you check the cam accurately and quickly.
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