780 Holley Carbs SS/S Legal

Dennda709 · 03-01-2013, 02:15 PM

2 NHRA Super Stock/Stock legal 780 3310 Holley carbs. 1 Clark Holroyd prepped, less than 50 passes, has the good casting, mechanically and cosmetically perfect. $525. 1 Val Hedworth prepped, worked good, made within 10 horse of the Holroyd version $275. Can email photos of either or both. Call: Dennis 623 842-3994

Dave Turner · 03-01-2013, 06:15 PM

Quote:

Originally Posted by Dennda709

2 NHRA Super Stock/Stock legal 780 3310 Holley carbs. 1 Clark Holroyd prepped, less than 50 passes, has the good casting, mechanically and cosmetically perfect. $575. 1 Val Hedworth prepped, worked good, made within 10 horse of the Holroyd version $300. Can email photos of either or both. Call: Dennis 623 842-3994

Rookie question Dennis - what are the characteristics of the "good casting"?

Dennda709 · 03-02-2013, 12:12 PM

According to Mr Holroyd a "good casting" does not have the boss for the secondary squirter. The Hedworth prepped carb has the boss and the Holroyd does not. Holley's had added the boss for double pumper versions. The Holroyd prepped carb has a casting date of 883. Which translates to 3rd week of August, 1968. According to the guy I bought the casting from it was originally on a Ford. Converting my SS Corvette to a True 10.5, so no need for a class legal carb.

Dave Turner · 03-02-2013, 07:25 PM

Thanks Dennis...there's no end to the education!

03-01-2013, 02:15 PM	#1
Dennda709 Junior Member Join Date: Jul 2012 Posts: 11 Likes: 0 Liked 0 Times in 0 Posts	780 Holley Carbs SS/S Legal 2 NHRA Super Stock/Stock legal 780 3310 Holley carbs. 1 Clark Holroyd prepped, less than 50 passes, has the good casting, mechanically and cosmetically perfect. $525. 1 Val Hedworth prepped, worked good, made within 10 horse of the Holroyd version $275. Can email photos of either or both. Call: Dennis 623 842-3994 Last edited by Dennda709; 03-06-2013 at 09:53 AM.

03-02-2013, 12:12 PM	#3
Dennda709 Junior Member Join Date: Jul 2012 Posts: 11 Likes: 0 Liked 0 Times in 0 Posts	Re: 780 Holley Carbs SS/S Legal According to Mr Holroyd a "good casting" does not have the boss for the secondary squirter. The Hedworth prepped carb has the boss and the Holroyd does not. Holley's had added the boss for double pumper versions. The Holroyd prepped carb has a casting date of 883. Which translates to 3rd week of August, 1968. According to the guy I bought the casting from it was originally on a Ford. Converting my SS Corvette to a True 10.5, so no need for a class legal carb.

03-02-2013, 07:25 PM	#4
Dave Turner VIP Member Join Date: Oct 2005 Location: Schomberg, ON, Canada Posts: 1,222 Likes: 1,606 Liked 364 Times in 138 Posts	Re: 780 Holley Carbs SS/S Legal Thanks Dennis...there's no end to the education! __________________ Dave Turner SS/GT #1153