1971 Buick 455 GS F/SA G/SA Build - Page 10

Shadylane · 12-09-2017, 08:49 PM

...

MR DERBY CITY · 12-10-2017, 11:00 AM

Quote:

Originally Posted by Shadylane

I wouldn't trust what Fast Freddie says, he gets most of his information from either Don Kennedy or Bobby D.

I hear ya Mr. Shady. Riding SHOTGUN in a race car on an old country road is a little far fetched for me too......This thread has been officially hijacked.....

SSGN · 01-13-2018, 10:08 AM

Mark
I see your running a HEI and no spark box, and I don't see a pcv?? Have you tried other set ups?? Just curious because on my street cars both showed HP on the dyno.

HP HUNTER · 01-14-2018, 01:25 PM

Quote:

Originally Posted by SSGN

Mark
I see your running a HEI and no spark box, and I don't see a pcv?? Have you tried other set ups?? Just curious because on my street cars both showed HP on the dyno.

I ran the HEI because I had not had a chance to rewire the car yet, and the fuel system seemed more important to me with the time I had to work with. Same with the testing, time was limited. What exactly did you see with the PCV valve, if you don't mind. Trying to get everything legal for this season. My oil pressure drop situation in the lights kept me from working on the metric trans along with a gear change. I've never even tuned on the car at the track or tried my other carbs. I will say this, the 1 time I've raced the car it put me in the winners circle!

SSGN · 01-14-2018, 04:24 PM

We tried a few things with the PCV, one was as stock with it in a breather and the other side vented. We vented the passenger side. We also tried 2 pcv and no vent, showed HP on the dyno but no et difference. The pcv in the end of the breather that you have worked the best as the breather acted like an oil separator. This is how I set up my street cars also.

HP HUNTER · 10-09-2019, 07:57 PM

After finishing the year with a best of 1.01 under the F/SA index losing some MPH since the engine was first built, I suspect the short block of being tired I plan to build a new short block and change the trans this winter. Of course I will post pictures as I go, followed with a dyno test with data, followed with a track test. I need to make a decision on the bore size and piston to wall clearance, I think I've got a handle on the bearing clearance from my previous testing. I will be nitrating the crank this time as well.

Dan Fahey · 10-09-2019, 10:21 PM

Quote:

Originally Posted by HP HUNTER

After finishing the year with a best of 1.01 under the F/SA index losing some MPH since the engine was first built, I suspect the short block of being tired I plan to build a new short block and change the trans this winter. Of course I will post pictures as I go, followed with a dyno test with data, followed with a track test. I need to make a decision on the bore size and piston to wall clearance, I think I've got a handle on the bearing clearance from my previous testing. I will be nitrating the crank this time as well.

What does that do to the crank?
D

HP HUNTER · 10-09-2019, 11:34 PM

Quote:

Originally Posted by Dan Fahey

What does that do to the crank?
D

Surface hardens the crank.

Mark Yacavone · 10-09-2019, 11:52 PM

Still a good deal for the short block. The pistons cost more than that.

Dave Noll · 10-11-2019, 02:28 PM

Quote:

Originally Posted by HP HUNTER

I will be nitrating the crank this time as well.

Who does that ?

12-09-2017, 08:49 PM	#91
Shadylane Member Join Date: Apr 2009 Location: Farmington, New Mexico Posts: 189 Likes: 169 Liked 119 Times in 39 Posts	Re: 1971 Buick 455 GS F/SA G/SA Build ... Last edited by Shadylane; 12-10-2017 at 10:02 PM.

01-13-2018, 10:08 AM	#93
SSGN Senior Member Join Date: Feb 2006 Posts: 625 Likes: 109 Liked 130 Times in 46 Posts	Re: 1971 Buick 455 GS F/SA G/SA Build Mark I see your running a HEI and no spark box, and I don't see a pcv?? Have you tried other set ups?? Just curious because on my street cars both showed HP on the dyno. __________________ The more people I meet the more I like my dog Kevin

01-14-2018, 04:24 PM	#95
SSGN Senior Member Join Date: Feb 2006 Posts: 625 Likes: 109 Liked 130 Times in 46 Posts	Re: 1971 Buick 455 GS F/SA G/SA Build We tried a few things with the PCV, one was as stock with it in a breather and the other side vented. We vented the passenger side. We also tried 2 pcv and no vent, showed HP on the dyno but no et difference. The pcv in the end of the breather that you have worked the best as the breather acted like an oil separator. This is how I set up my street cars also. __________________ The more people I meet the more I like my dog Kevin

10-09-2019, 07:57 PM	#96
HP HUNTER Senior Member Join Date: Feb 2012 Location: Colorado Springs Colorado/Thousand Oaks Ca Posts: 606 Likes: 68 Liked 238 Times in 97 Posts	Re: 1971 Buick 455 GS F/SA G/SA Build After finishing the year with a best of 1.01 under the F/SA index losing some MPH since the engine was first built, I suspect the short block of being tired I plan to build a new short block and change the trans this winter. Of course I will post pictures as I go, followed with a dyno test with data, followed with a track test. I need to make a decision on the bore size and piston to wall clearance, I think I've got a handle on the bearing clearance from my previous testing. I will be nitrating the crank this time as well. Attached Thumbnails

10-09-2019, 11:52 PM	#99
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,413 Likes: 2,578 Liked 4,447 Times in 1,693 Posts	Re: 1971 Buick 455 GS F/SA G/SA Build Still a good deal for the short block. The pistons cost more than that. __________________ We are lucky we don't get as much Government as we pay for..... Will Rogers

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