How do these specs look

is it something you have been battling or recently installed cam and now have trouble.  could be a fuel ratio issue at idle with more lift?

It's an A-C 175 gas grind. I sent Berry cam a new 175 camshaft some 25 plus years ago and they copied the cam lobe profile and have re-ground 100's of them to this spec.

A "175" cam grind will idle just as nice as a stock cam grind. No difference in idle quality unless you're 1 tooth off in gear mesh.

Would being 1 tooth off hurt horsepower? Was expecting more than 38 bp

If you don't have the compression of the 175 then a 175 cam probably knocked the compression down a tad and cuts power

Timing marks are the same. You didn't answer the question.........how many HP did it have BEFORE you made the camshaft swap??????

Wish I would've found Berry's when I rebuilt my 45 last year. I'd checked around a little, but didn't find anyone that seemed reliable and would actually make the correct grind.

An improperly degreed installation of the camshaft will also give poor quality results. If building a pulling motor, you don’t just install parts and hope for the best. I don’t work on the W_ engines, however I’ve never seen a reground cam that will install properly without some tweeking.

Edited by PaulB - 12 Jan 2018 at 12:55pm

Until there is an actual, accurate compression test performed, everything is speculation. The engine has to have good compression to make HP. This is where to start.

Yes, a stock 175 grind has the lobe peaks very sharp.

the cam card looks to me like an awfully long duration and high lift for being patterned after anything from the factory. 238* @ .050" is a lot of duration, and probably why it has no compression like Dr is trying to point out. Also, .480" valve lift? That is pretty huge llift numbers too. I'm betting this is the high rpm version they created from the 175 cam initially. 

With 238* of duration @ .050 lift on a siamesed port 4 cylinder you have 3 valves open for a long time connecting 2 cylinders.  The engine will run like a sick air compressor.....In simple terms, it's not going to work.

FOr any of these siamesed port 4 cyl engines in a low speed application, meaning 2500 RPM and less with a typical torque band of say 1800 down to 1200 RPM you can use the following examples.  A typical camshaft duration for an engine like this at .050" is going to be 176* for most of the stock camshafts.  A pulling camshaft for a smaller displacement engine is going to be in the 195* area, a mid sized engine or a larger displacement engine running with a little speed would be in the 215* range.   A very large engine or one that is going to run very fast will be in the 224* area, any more than that and there's simply to much overlap. 

People like to throw the term "175 grind" around because every beginning engine guru is a camshaft expert.  I've had people bring me camshafts to install because they had it ground to this magic spec and the card read like the one you posted a picture of.  It's scrap metal.  I know it's not what you want to hear, I'm sorry but stay away from Berry cam service.

I So where do you go to get a good cam for work and or pulling?

I think Steve Fischer can help you out and Berry needs to grind you another cam to the real 175 spec for free.

By the service manual specs if the tractor model 175 intake duration is 220* at .012 lift that would equal about (not exactly) 185* at .050. The exhaust duration per the AC service manual is 230* at .012 lift which would equal about (not exactly) 195* at .050. The lobe separation angle would be another important number which could be calculated by the numbers given.

Edited by O.P.S. Heads - 15 Jan 2018 at 9:52am