80 CAM

I would call CB and ask them. They are super helpful and supportive in my experience.

I second that, but since all CB Performance cams have a stock number starting with "22" then I would suspect that you have a "2280" so-called "Fuel Efficient" cam:

https://www.cbperformance.com/product-p/2280.htm

How's THAT for a good guess?

That is my guess as well, Gordon.  As Gordo said, the only camshaft CB lists with '80' is the 2280- 274° advertised duration, 222° @.050"  with .359" cam lift on 107° lobe centers.  With extremely long ramps (52° between advertised duration and the dur @.050") and only 8° more duration @.050" than a stock cam it is pretty mild (it does have .060" more lift at the cam though).  I think the 2280 would actually be a good stock replacement, allowing a smaller (16-1900 cc) engine to run well with a single stock Solex carburetor.  What heads are on the engine?  How high did the engine rev with power?

The head say Auto Lena G01.   single spring 35.5x32 values.  The motor ran well.  I can't really remember what the power felt like or the max rpm.  I believe the rocker are stock ratio.

What cam are you thinking about putting in it, @Bobby D?

The heads are stock replacement and on a 1915 probably close to their limit with the components that are there already. It's a pretty well matched combo.

Al

I am not sure.  How would CB's 2250 cam do with 40 IDF's?  I am open to recommendations.

The friend of mine only wants to pay me around $1,500 for the Long Block.  Anything he would want to change, I would make him pay for it.

It kinda sucks, this is basically a turn key motor that only needs the oil cooler, fan and alternator.  All of the engine tin, fan shroud, clutch heater boxes and Tri-Mill exhaust I have and go with the sale.  But he only wants the Long Block.

I think you'll find that (as I added above) everything on this engine, while working really well on a 1915 that tops at 4500-5,000 rpm, won't really do much if you try to extend the rpm limit appreciably.  The 34 ICT carbs are capable of 92 or 93 hp, the exhaust will do a little more but not a lot and the heads (without some work) are pretty much at their limit as well (as I already said in my post above).  Some 40 IDF's and a Sidewinder might make a little more power (and rev a wee bit higher) and feel a bit smoother but the limiting factors are the cam and heads- the engine doesn't have enough duration to rev much higher and the heads aren't going to flow much more without some porting work.

The 2250 would be a great choice in an engine with the better carbs, exhaust and better flowing heads, but I think you'll find that simply popping in the cam, even with the IDF's and Sidewinder, will have a fairly narrow powerband where it's really happy.  Bottom end/lower midrange won't be particularly nice because of the limited headflow and the longer cam duration and will show up as slightly poorer than usual mileage for an engine this size.  Mid to upper midrange will be great- this is where cams of this duration start to shine, but instead of getting up and making power to 6 or 6500 rpm the thing will shut down somewhere in the 5-5500 range. 

Heads with more flow are the answer here.  CB's Panchitos are a good choice and will produce a big hp #, but will put the emphasis on the upper midrange/top end.  Think redline up around 6500 rpm.  Although not as popular, the heads you have, properly ported, will produce the smoothest and best power up to the last 1,000 or 1500 rpm (and get great mileage while doing it- think where we do 99% of our driving.

For a cam with the present heads and new carbs and exhaust- maybe CB's 2239?  Dur @.050" is 234°, .380" cam lift (12° more duration and .020" more lift than the 2280).

Hope this helps.  Al

Thank You Al, that helps alot.  I don't want to waste time and money on updates that won't improve it much.

well the guy that was going to buy my long bock 1915 decided he was just going to keep his stock 40 hp motor. 

Now what should I do with this motor?

Having a spare motor isn't a bad thing.

@Bobby D posted:

well the guy that was going to buy my long bock 1915 decided he was just going to keep his stock 40 hp motor.

Now what should I do with this motor?

"this is basically a turn key motor that only needs the oil cooler, fan and alternator."

I think you answered your own question. I would have loved to have had a spare engine sitting under the bench, ready to go, back when I bent a pushrod.

matching numbers just pulling ur chain:}