327 vs 283

Brett Brown · 09-08-2011, 01:00 AM

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

Paul Precht · 09-08-2011, 01:16 AM

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

Tom Meyer · 09-08-2011, 08:46 AM

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

Greg Reimer 7376 · 09-08-2011, 08:55 AM

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.

ss wannabee · 09-08-2011, 09:03 AM

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

Brad Zaskowski · 09-08-2011, 11:16 AM

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.

67chevygary · 09-08-2011, 11:34 AM

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

RPinoski1 · 09-08-2011, 05:25 PM

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

Dan Fahey · 09-08-2011, 05:40 PM

Quote:

Originally Posted by RPinoski1

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

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

RPinoski1 · 09-08-2011, 05:45 PM

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

09-08-2011, 01:00 AM	#1
Brett Brown Member Join Date: Aug 2005 Location: Anaheim, CA Posts: 234 Likes: 4 Liked 5 Times in 2 Posts	327 vs 283 How much more hp would you expect to make from a 327 vs 283 (using same cam, carb & cylinder head)? __________________ Brett Brown 7257 STK, SS, COMP

09-08-2011, 01:16 AM	#2
Paul Precht Senior Member Join Date: Dec 2001 Location: Elysburg, Pa Posts: 696 Likes: 284 Liked 242 Times in 94 Posts	Re: 327 vs 283 Should be almost the same assuming the valvetrain can handle the extra RPMs.

09-08-2011, 08:46 AM	#3
Tom Meyer Senior Member Join Date: Aug 2003 Location: Pierce NE Posts: 901 Likes: 51 Liked 303 Times in 106 Posts	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 __________________ Tom Meyer 5240 SS Stock ???

09-08-2011, 08:55 AM	#4
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,115 Likes: 166 Liked 654 Times in 209 Posts	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.

09-08-2011, 11:16 AM	#6
Brad Zaskowski Member Join Date: Sep 2004 Location: Grand Rapids, MI Posts: 199 Likes: 108 Liked 94 Times in 19 Posts	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. __________________ Brad Zaskowski 3697 STK, SS

09-08-2011, 09:03 AM	#5
ss wannabee Senior Member Join Date: Jun 2005 Posts: 663 Likes: 0 Liked 5 Times in 5 Posts	Re: 327 vs 283 Is this a STOCK or SS question? Interested in the SS side....

09-08-2011, 11:34 AM	#7
67chevygary Junior Member Join Date: Dec 2007 Posts: 51 Likes: 0 Liked 0 Times in 0 Posts	Re: 327 vs 283 Am curious as to wether the 590 heads have a distinct advantage over 896-460-or 523 heads?

09-08-2011, 05:25 PM	#8
RPinoski1 Member Join Date: Jan 2002 Location: PLACERVILLE, CA Posts: 182 Likes: 0 Liked 0 Times in 0 Posts	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 __________________ "I've never seen a Hearse with a Luggage Rack, You Can't Take it With You" Mike Ness Last edited by RPinoski1; 09-08-2011 at 05:28 PM.

09-08-2011, 05:45 PM	#10
RPinoski1 Member Join Date: Jan 2002 Location: PLACERVILLE, CA Posts: 182 Likes: 0 Liked 0 Times in 0 Posts	Re: 327 vs 283 I see it now...I wasn't looking down the sheet far enough. __________________ "I've never seen a Hearse with a Luggage Rack, You Can't Take it With You" Mike Ness