ZL1 stocker

X-TECH MAN · 02-03-2009, 04:56 PM

Save your money. Its been proven before many years ago when NHRA allowed the iron block as a replacement for the alum. block in S/S that it makes more power. The weight difference is the only advantage of the alum. block. It has to do with heat retention. Thats my story and Im sticking to it.

Alan Roehrich · 02-03-2009, 05:03 PM

Actually, most have found that when comparing blocks as close to identical as possible except material, the aluminum block moves enough to make the HP difference. Given that aluminum is much less dimensionally stable over temperature variations, several things arise due to things not staying where you want them as the block moves around.

When it comes to heads, identical heads being a given, other than material, then the heat retention theory does indeed hold. If the heads are as dimensionally identical as possible, the iron heads will make more power.

John Mason · 02-03-2009, 05:56 PM

I believe Dale Howard's Camaro out of Las Vegas is an iron block, aluminum head 427 A/SA built by Gary Hettler. It runs very well.

Alan Roehrich · 02-03-2009, 06:24 PM

Quote:

Originally Posted by John Mason

I believe Dale Howard's Camaro out of Las Vegas is an iron block, aluminum head 427 A/SA built by Gary Hettler. It runs very well.

John, I was told at one time that it was a 427/425 car with 401 heads. I think that was last year. It was for sale a while back on racing junk. It does fly, though. He's got it listed for $50K.

John Mason · 02-03-2009, 10:18 PM

Alan, you're right. Gary and I talked about that combo last year at Vegas. I haven't seen Dale out for a while but that car is drop dead gorgeous. Almost as fast as Bobby D's.

RJ · 02-04-2009, 09:02 AM

xxxxx

larrylomascolo · 02-08-2009, 11:20 PM

i see a new stocker at winternats ,427 camaro,out of hunington beach cal. very nice blue like bobby d,s but not as fast

02-03-2009, 04:56 PM	#1
X-TECH MAN Banned Join Date: Dec 2007 Location: Lake Placid, Florida Posts: 3,203 Likes: 1,047 Liked 235 Times in 110 Posts	Re: ZL1 stocker Save your money. Its been proven before many years ago when NHRA allowed the iron block as a replacement for the alum. block in S/S that it makes more power. The weight difference is the only advantage of the alum. block. It has to do with heat retention. Thats my story and Im sticking to it.

02-03-2009, 05:03 PM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,126 Likes: 1,583 Liked 1,892 Times in 423 Posts	Re: ZL1 stocker Actually, most have found that when comparing blocks as close to identical as possible except material, the aluminum block moves enough to make the HP difference. Given that aluminum is much less dimensionally stable over temperature variations, several things arise due to things not staying where you want them as the block moves around. When it comes to heads, identical heads being a given, other than material, then the heat retention theory does indeed hold. If the heads are as dimensionally identical as possible, the iron heads will make more power. __________________ Alan Roehrich 212A G/S

02-03-2009, 05:56 PM	#3
John Mason Member Join Date: Apr 2002 Posts: 147 Likes: 0 Liked 0 Times in 0 Posts	Re: ZL1 stocker I believe Dale Howard's Camaro out of Las Vegas is an iron block, aluminum head 427 A/SA built by Gary Hettler. It runs very well. __________________ John Mason 7743 SS

02-03-2009, 10:18 PM	#5
John Mason Member Join Date: Apr 2002 Posts: 147 Likes: 0 Liked 0 Times in 0 Posts	Re: ZL1 stocker Alan, you're right. Gary and I talked about that combo last year at Vegas. I haven't seen Dale out for a while but that car is drop dead gorgeous. Almost as fast as Bobby D's. __________________ John Mason 7743 SS

02-04-2009, 09:02 AM	#6
RJ Member Join Date: Oct 2002 Posts: 248 Likes: 0 Liked 0 Times in 0 Posts	Re: ZL1 stocker xxxxx Last edited by RJ; 03-22-2009 at 05:03 PM.

02-08-2009, 11:20 PM	#7
larrylomascolo Member Join Date: Nov 2008 Location: Ontario,canada Posts: 440 Likes: 70 Liked 66 Times in 29 Posts	Re: ZL1 stocker i see a new stocker at winternats ,427 camaro,out of hunington beach cal. very nice blue like bobby d,s but not as fast

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