Response To Gene Manno's Question About Joe C's 327

[Joe C.]

Joe C,
Wow, that is a very flat torque curve from 2700 RPM and up. A lot of power for 327 cubes. How is it coming off stop lights?

Gene,
Thank you. I have a Keisler RS600 5 speed with a 2.79 1st gear ratio. That, coupled with the 3.70 axle yields 10.323 torque multiplication in 1st gear. This is equivalent to a M21/M22 whose first gear ratio is 2.20:1 , mated to a theoretical 4.69:1 axle ratio. Add to this the 215R 70-15 tires and you can see that I have to start off rather gingerly. The 750 double pumper is dialed in very well and responds instantly to WOT from an idle. If I go WOT from a dead stop the car just sits there while digging 2 holes in the pavement. Spinning will continue for as long as I keep my foot in it. I have to lift otherwise the engine will quickly hit the rev limiter, which is set to 7750 RPM.

[Gene M.]

Re: Response To Gene Manno's Question About Joe C's 327

Joe,
You have even more gear than my 65 with 3.36 rear and 2.87 first = 9.64 torque multiplication in 1st gear. So that torque gets you moving.... just.... fine....!

[Joe C.]

Re: Response To Gene Manno's Question About Joe C's 327

Joe,
You have even more gear than my 65 with 3.36 rear and 2.87 first = 9.64 torque multiplication in 1st gear. So that torque gets you moving.... just.... fine....!

What engine do you have and any mods that you care to reveal here?

[Gene M.]

Re: Response To Gene Manno's Question About Joe C's 327

It's a 327 thats .030 over flat tops, ported 461 heads under cut and swirl polished ss valves (2.02 & 1.60). The cam is an old style "cheater" 300 HP with Z28 springs, everything is pretty much stock 300 horse chevy. It run strong till 5500 when the small WCFB just runs out of air....... Oh it will keep going but it is all done then. Great on the street but could use more carberation. I'm reluctant to do any more cause it runs real strong for what it is and gets great gas mileage with the 5 speed. Replaced radiator with a Dewitts for modified engines. Also has rack and pinion, power DRUM brakes, 105 amp alternator with harness upgrade and modifications. I used another harness and stowed away the original as well as all the other original parts. A modified version of Vintage air is added. Just drove it across country to Denver and back.

[Joe C.]

Re: Response To Gene Manno's Question About Joe C's 327

It's a 327 thats .030 over flat tops, ported 461 heads under cut and swirl polished ss valves (2.02 & 1.60). The cam is an old style "cheater" 300 HP with Z28 springs, everything is pretty much stock 300 horse chevy. It run strong till 5500 when the small WCFB just runs out of air....... Oh it will keep going but it is all done then. Great on the street but could use more carberation. I'm reluctant to do any more cause it runs real strong for what it is and gets great gas mileage with the 5 speed. Replaced radiator with a Dewitts for modified engines. Also has rack and pinion, power DRUM brakes, 105 amp alternator with harness upgrade and modifications. I used another harness and stowed away the original as well as all the other original parts. A modified version of Vintage air is added. Just drove it across country to Denver and back.

Sounds like a nice setup. At one point I had what some would call a "cheater" in my engine: a Comp Nostalgia Plus 30-30S. It added a good amount of power/torque and actually has faster ramps than milder hydraulic rollers. I was using LS1 type beehive springs with that cam, and they worked well, especially given the fact that beehives are gentle on the seats for valve closing events. A true "cheater" holds POML for a period longer than stock, but I don't think they last very long on the street. I wonder if you have Comp's Nostalgia Plus N+300HP.

That's a great honor to have your car displayed on the RT shirt. I would have liked to make the trip this year and was looking forward to it when my left knee acted up and made driving the '65 nearly impossible.

[Gene M.]

Re: Response To Gene Manno's Question About Joe C's 327

Joe,
I was honored to have my '65 on the shirts. And the road tour was a great experience to do in a chrome bumper car.

From what I remember (this camshaft is over 35 years old) the duration at .050 and max lift meet stock spec's on paper. But everything stops there the ramps are faster and lobe separation is tighter. Possibly this is a regrind on some GM shaft. I did not order it originally. It runs strong but I have not rechecked anything since I put it in when I built the car over 30 years ago. Oil filter has been clean. This makes me think the rise rate is not as radical as todays available profiles. I doubt it is Comp's Nostalgia Plus N+300HP since most of their profiles are not designed for durability. Knock on wood.....

[Joe C.]

Re: Response To Gene Manno's Question About Joe C's 327

Joe,
I was honored to have my '65 on the shirts. And the road tour was a great experience to do in a chrome bumper car.

From what I remember (this camshaft is over 35 years old) the duration at .050 and max lift meet stock spec's on paper. But everything stops there the ramps are faster and lobe separation is tighter. Possibly this is a regrind on some GM shaft. I did not order it originally. It runs strong but I have not rechecked anything since I put it in when I built the car over 30 years ago. Oil filter has been clean. This makes me think the rise rate is not as radical as todays available profiles. I doubt it is Comp's Nostalgia Plus N+300HP since most of their profiles are not designed for durability. Knock on wood.....

I didn't realize your cam was that old. Likely the Nostalgia Plus series didn't exist then. If you are using the "Z28" springs, which are heavier than stock but still very light by today's standards, then your cam is still fairly mild.

[Gene M.]

Re: Response To Gene Manno's Question About Joe C's 327

I didn't realize your cam was that old. Likely the Nostalgia Plus series didn't exist then. If you are using the "Z28" springs, which are heavier than stock but still very light by today's standards, then your cam is still fairly mild.

I agree mild but still produces strong bottom end, with good street manors. My guess it is an old Isky, Crane, or Weber profile. Back in the day the profiles didn't have the spring technology of today. So profiles were not as radical for street/strip use. In any event it has held up and performance over all has been good. Since it is still running good. I'm not about to pulling anything apart.