What cam timing do I want?

[rlearp]

I've got my 907 engine apart AGAIN. I convinced myself at one time that I needed 115 EX/115 IN cam timing for top end power on the little motor. Then, at one time I convinced myself that I needed 100 EX/100IN for top end power. Now it has been 4 weeks and I've forgotten everything again. Someone convince me of what is right!

Remember, the motor is for a race car so if we drive it right we'll never see below 5k and we have to use the stock cam - so don't even think about suggesting different cams to go with the cam timing ;-). Thanks,

Ron

[rlearp]

Great info and I appreciate it.

One comment though - the Strombergs I think are under appreciated and can work well. We've got a set on Jeff's TR8, exactly the same carb and size, and the 3.5L motor put down 160 rear wheel hp with stock carbs and no changes to them. That is about 180 crank hp.

We've now had the carbs reflowed and stuff removed that was not needed - it runs much stronger now and we'll dyno it in a couple of weeks.

My JH has the exact same carb setup as far as changes to the carb go and I'm sure it'll be enough for a 2L motor. We run the TR8 to 6500RPM too, not far from what the JH motor will run.

I'll get some dyno results in about 4 weeks or so.

Now to ponder those cam choices and setup.........

Thanks again,
Ron