BEFORE YOU freak out, understand.

I am going turbo, but I need to build my motor first. I am going to go forged pistons and rods, splayed 4 bolts stock crank, new bearings yadda yadda yadda. I am probably shooting for 9.0-9.5 CR. (closer to 9.0)

Anyway, while the motor is out it would be nice to throw the cam/heads in then. So, back to my question.

How would a turbo cam run without the boost? Would it cause major driveability problems? It would only be part time as I get the turbo built/bought.

This is in the distant future, just for my knowledge now.

 

The car should run fine N/A with a turbo cam. But, with low compression and a turbo grind it's going to be sluggish.

 

Just gonna feel a little weak down low and mid range due to lack of compression. I'd run some weak sauce fuel in it so you have a good chance to vaporize it and get a decent burn with the low compression maybe a slightly hotter plug to keep from foulin them, change over when you put the turbo on. How bad any of this is depends on the specs of the cam but i'd just run it.

 

Not so great. I mean it will run fine, but it will be down on power.

 

I wouldn't exactly be looking to race it with such low compression.

I had a supercharged GP before and when the belt was off that car was SLOW as all hell. It went from 285whp to what felt like 130whp.

Just want driveability covered, in case it takes longer than planned to finish up.

 

It will be fine... and will make good power. Not optimal in N/A form, but fine.

Good example:

My T/A (back when it was owned by jgeorger) running Ported GTP Stage 2 heads and 218/230 114LSA cam on the stock shortblock (10.5:1 CR) dynoed 375 rwhp/360 rwtq on a dynojet (not bad for a S/C type cam running N/A). Then the same top end went on a forged 383 with 9:1 CR and laid down 337rwhp/343rwtq on a mustang dyno. On a dynojet, the numbers probably would have been the same as before.

FYI, I have the T/A right now and it has the same 9:1 CR, but it has unported stock heads on it now and the same little cam. Needless to say, it still gets up and goes pretty well.