327 vs 283
 

How much more hp would you expect to make from a 327 vs 283 (using same cam, carb & cylinder head)?

Re: 327 vs 283
 

Should be almost the same assuming the valvetrain can handle the extra RPMs.

Re: 327 vs 283
 

Using 500 for a good 283 SS engine, math comes out to 1.76 per cube times 44 more rounds out to about 77 more hp. Have never ran one maybe someone could tell use what a good 250 hp 327 makes. Tom

Re: 327 vs 283
 

A 327 will have a lot more torque than the 283. Also, using the same heads( I assume a set of #520's), the 327 has a drastic compression edge.There is a Div. 7 racer, a Mr. Solano, that has a blue 64 Malibu hardtop with a 327/250 horse combo running in J/SA that has gotten into the 11's pretty handily, that with the 4 jet and all. The 68 low compression 250 horse engine isn't anywhere near as good in bad air. It falls on its face pretty markedly. The 283, however, will make RPM like nothing else.That's where the horsepower comes in.

Re: 327 vs 283
 

Is this a STOCK or SS question? Interested in the SS side....

Re: 327 vs 283
 

In my SS car with the car weight real close to the same the 327 250/258 is about 2.5 tenths faster than the 283 220/230 which uses the same heads, intake and carb. I don't know the actual HP numbers but that is what they are on the track for our car and motors.
The 283 makes the power about 1000 rpm higher than the 327.

Re: 327 vs 283
 

Am curious as to wether the 590 heads have a distinct advantage over 896-460-or 523 heads?

Re: 327 vs 283
 

Besides 8 HP, anyone know what the difference is between the following 327's ?

This is for SUPER STOCK

63-64 327 250/262

and

65 327 250/270

Re: 327 vs 283
 

YES..
62/64 327 ran 283 Power Pack heads with 1.72/1.42 valves

65 - 327 used larger 1.94/1.5 valves which are perfect valve size for that size engine.

D

Re: 327 vs 283
 

I see it now...I wasn't looking down the sheet far enough.