Well, I finally got to take my Chevelle on it's first drive tonight and here's something I discovered....

It seems as if the car has no more power past 3k rpms. My speedo was unhooked but I'm guessing I was doing 55 or less.

Now, here's the known specs:

12 bolt rear end with (I believe) a 4.10 ring and pinion. (I jacked the car up and spun the wheel/counted the revolutions of the driveshaft, which was just over 4:1)

TH350, believed to have stock converter

'78 350 engine from a full size vehicle, believed to be bone stock

I'm begining to wonder if the stock cam in these late 70's 350's was only good up to maybe 3000 rpms? (considering most anything then had 2.56 gears or something like that)

Does it sound like I need to do a cam/converter swap to match the powerband the car normally drives in?

smile.gif

I think you have another issue somewhere. Even the stock cam will pull to a little over 4K. Maybe tired valvesprings, or a frozen mechanical advance in the distributor?

Exactly, something else is going on I should think unless you're way off on your rpm guess. Wouldn;t be surprised if it pooped out at 4500 or so.

WIth 4.10s , around 10:1 and a small-ish solid cam and 3500 stall will do ya! ;)