older Holley intake manifold ? - Page 2

Joe Abbazia · 11-01-2014, 08:11 PM

About ten years ago I was on the dyno with my 327 stocker trying different things and wanted to see how bad the stock intake was. Everyone in the shop was amazed that the old 300-2 was worth 45 hp over the stock gm 397 corvette one.

Glenn Hayes · 11-01-2014, 08:41 PM

Quote:

Originally Posted by Joe Abbazia

About ten years ago I was on the dyno with my 327 stocker trying different things and wanted to see how bad the stock intake was. Everyone in the shop was amazed that the old 300-2 was worth 45 hp over the stock gm 397 corvette one.

Holy Cow !

Was that at one spot or all over?

richie 2 · 11-02-2014, 08:23 AM

i have a #300-25 if u need pics.

MrBo · 11-02-2014, 10:51 AM

This is a page from the 1979 Holley catalog with the 300-2 vs the 300-25.
I bought a 300-2 in 1977, and a 300-25 a little while after that, running them both on a 350 SBC.
I couldn't tell much of a difference between them,
but then again there were no 60ft lights at the track then.

11-01-2014, 08:11 PM	#11
Joe Abbazia Junior Member Join Date: Aug 2005 Location: USA Posts: 66 Likes: 0 Liked 19 Times in 4 Posts	Re: older Holley intake manifold ? About ten years ago I was on the dyno with my 327 stocker trying different things and wanted to see how bad the stock intake was. Everyone in the shop was amazed that the old 300-2 was worth 45 hp over the stock gm 397 corvette one.

11-02-2014, 08:23 AM	#13
richie 2 Senior Member Join Date: Feb 2009 Posts: 918 Likes: 321 Liked 157 Times in 73 Posts	Re: older Holley intake manifold ? i have a #300-25 if u need pics. Last edited by richie 2; 11-02-2014 at 08:39 AM.

11-02-2014, 10:51 AM	#14
MrBo Junior Member Join Date: Nov 2014 Location: Ontario Canada Posts: 1 Likes: 0 Liked 0 Times in 0 Posts	Re: older Holley intake manifold ? This is a page from the 1979 Holley catalog with the 300-2 vs the 300-25. I bought a 300-2 in 1977, and a 300-25 a little while after that, running them both on a 350 SBC. I couldn't tell much of a difference between them, but then again there were no 60ft lights at the track then.