Everytime
 

Everytime at the NOCC show this past weekend that I started up my car, I had guys asking me what motor I had. I told em it was just a 350 with 330 HP crate motor. So then they all asked what cam is in it? I said its fashioned after the 65-67 Corvette 327 with a little more lift & duration. I showed them the paperwork I have on the motor.

My paperwork on the cam says: Duration @ .050": 212° Intake / 222° Exhaust and the Lift: .435" Intake / .460" Exhaust. Not one of those guys (some were drag racers) agreed with those specs. They all said they think its over .500" by the way it lopes. I told them all I know is, if I really nail it, it will just shit n git.

I built a duplicate of the GM 350/330hp HO crate motor a few months ago...added same GM cam and Vortec heads on a stock, dish piston 350 short block. Installed it in my buddy's '65 Chevelle SS convertible.
It has no where the "lope" you described...

Believe me...I KNOW lope when I hear it.;)

https://www.youtube.com/watch?v=rudosIEFnbM

https://www.youtube.com/watch?v=Up-cpzPbH7s

It sounded great ,I did get to hear it once even though you didnt know I was there but then again we were everywhere.It was good to finally get to meet you and Judy in person and see that beautiful car.Great show as usual.

Bill, this is just a little snippet of it. Motor is still a little cold. When its warm it "lopes" more than this.

https://youtu.be/B5j33lfUv-4

That cam sounds more aggressive than the GM HO crate cam....212/222 @ .050" is pretty mild.
What is the idle set at? How much base timing? Where is the vacuum advance hooked up to...ported or manifold source? How much vacuum at idle?

I'll get a video of my buddy's '65 the next time I'm near his car. Slightly noticeable lope at idle but clears right up off idle.

Are you sure that's a stock GM HO cam??

I have no idea what timing is, vacuum is off of Edlebrock 600 carb. Don't know vacuum @ idle and the idle was at 600 RPM.....I have done nothing to this motor except change plugs in 3 years. As far as I know, its supposed to be the stock cam that came with 350/330 HO crate motor.

Lope is a little more distinguished in this one.

https://youtu.be/1vGfKTNGfZ0

Sounds good.

Maybe the low idle speed adds to the effect?

I had the idle in gear tuned to 625 RPM in my LQ4. It has a baby cam, 202/216 on a 112. It loped enough to make people look around in traffic trying to figure where it was coming from.

Thanks Ray.