New 64 Stepper Project - Page 27 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Paul Y · 02-20-2022, 05:53 PM

Until I get mine all back together I am guessing when it comes to tyre size and the amount of coils to lop off the front end but, if it comes close to what you have achieved, I will be a happy camper.

I am wavering between a 225/70/15 and a 215/75/15 both on a 7" rim but that purchase can wait another month yet.

P.

**The Rocknrod** · 02-20-2022, 06:07 PM

Thanks again. I wish you the best.

**The Rocknrod** · 03-07-2022, 08:36 AM

So I drove out to the new So-Cal shop in Waco this weekend it was 56 miles round trip and I got 17.9 mpg. The route had 65 MPH, 55 MPH 60MPH and city driving stop signs to and from. I don't want to go any leaner. Still have some choke tweeking to do though. It's a process.

I guess I'm going to find a local job now cause I need the gas money.

SCOTI · 03-07-2022, 09:37 AM

Quote:

Originally Posted by The Rocknrod

So I drove out to the new So-Cal shop in Waco this weekend it was 56 miles round trip and I got 17.9 mpg. The route had 65 MPH, 55 MPH 60MPH and city driving stop signs to and from. I don't want to go any leaner. Still have some choke tweeking to do though. It's a process.

I guess I'm going to find a local job now cause I need the gas money.

Impressive.

**The Rocknrod** · 03-07-2022, 09:43 AM

Quote:

Originally Posted by SCOTI

Impressive.

I wasn't sure if that was good or not. I was getting like 10mpg when I started.

SCOTI · 03-07-2022, 09:51 AM

Quote:

Originally Posted by The Rocknrod

I wasn't sure if that was good or not. I was getting like 10mpg when I started.

Over 16mpgs for a 350ci/auto trans/3500# brick is impressive for a carb set-up.

**The Rocknrod** · 03-07-2022, 10:05 AM

Quote:

Originally Posted by SCOTI

Over 16mpgs for a 350ci/auto trans/3500# brick is impressive for a carb set-up.

Okay that's cool. I'll take it.

**MT65** · 03-07-2022, 10:22 AM

Quote:

Originally Posted by SCOTI

Impressive.

How do the plugs look…..I started putting wideband gauges in everything, takes the guesswork out…..

**The Rocknrod** · 03-07-2022, 10:34 AM

I'll have to pull a couple and see. When I first started this they looked terrible, too much fuel.

**clemdaddy** · 03-07-2022, 06:21 PM

Nearly 18 mpg is great especially doing 70mph. Sounds like she's dialed in. If it starts easy and burns clean... great job.

SCOTI · 03-07-2022, 10:24 PM

Any more details on the carb you're using?

I'm familiar w/the Demon brand but not so much their current product line & that particular model. Is it for a spread-bore intake or standard Holley square set-up? Easier for tuning vs. Q-jet or Edel/Carter style? What about vs a Holley?

**The Rocknrod** · 03-07-2022, 10:33 PM

It's a Street Demon 1901BK. Square bore. Super easy to tune and work on. I hate working on carbs but this one makes it a pleasure, if you can call it that.

**The Rocknrod** · 03-08-2022, 04:30 PM

Spark plug:

**MT65** · 03-08-2022, 09:45 PM

Color is definitely getting better….

**The Rocknrod** · 03-08-2022, 09:47 PM

Thats as good as it gets.

**The Rocknrod** · 03-25-2022, 08:25 AM

When I changed the metering rods from 60/52's to 58/50's the mileage went from 18 to 12. Albeit the quick trip I checked it on was only 6.2 miles up and 6.2 miles back and I passed a slow-poke on the way up.

That may have hurt it some.

You know the deal they were doing 50 in a 65 on a two lane road, I had to conduct a high speed fly-by.

And then starting out I had to floor it to get into traffic.
On second thought that whole run was completely different than the rest, too short ect.
I'll try again latter.

SCOTI · 03-25-2022, 09:16 AM

Quote:

Originally Posted by The Rocknrod

When I changed the metering rods from 60/52's to 58/50's the mileage went from 18 to 12. Albeit the quick trip I checked it on was only 6.2 miles up and 6.2 miles back and I passed a slow-poke on the way up.

That may have hurt it some.

You know the deal they were doing 50 in a 65 on a two lane road, I had to conduct a high speed fly-by.

And then starting out I had to floor it to get into traffic.
On second thought that whole run was completely different than the rest, too short ect.
I'll try again latter.

BIG difference. 33% variation definitely requires more evaluation.

**The Rocknrod** · 03-25-2022, 09:59 AM

Ya I don't see it as normal either. I checked timing, vacuum etc. as soon as I got home, ensured everything was snug. Doesn't seem right to me either.
Hey on a good note volts are awesome.

Braunschweiger · 03-25-2022, 12:06 PM

Follow with interest, they have achieved a great result, I will do the same with my engine and have also put an AFR connector in the Header

**The Rocknrod** · 03-25-2022, 12:44 PM

Quote:

Originally Posted by Braunschweiger

Follow with interest, they have achieved a great result, I will do the same with my engine and have also put an AFR connector in the Header

That's an idea I have been considering and should have done.

**The Rocknrod** · 03-26-2022, 06:50 PM

10.8 mpg after a 30 mile round trip. I might be off a bit because I'm using a wooden dowel dipstick and a ruler instead of the gas gauge.
So in the AM I will put the old metering rods back in and see what the deal is.
I just feel like at 18mpg it's lean as in no balls engine wise. Better today for sure.

Oh on another note I went to the Waco So-Cal store show where they had a car show. They had six plaques for awards. I received Best of Show Truck and Fan Favorite.

**cwcarpenter98** · 03-26-2022, 08:58 PM

Man, you're going to need a dedicated shelf for all the awards you keep getting. Congrats!

**MT65** · 03-27-2022, 09:30 AM

As CW said, your carpenter skill will be next for these awards, shelves will be necessary….congratulations…

Braunschweiger · 03-27-2022, 11:35 AM

The Shelf will be necessary, the Awards will increase in the Summer with the Great Truck.

**The Rocknrod** · 03-27-2022, 01:37 PM

Quote:

Originally Posted by cwcarpenter98

Man, you're going to need a dedicated shelf for all the awards you keep getting. Congrats!

Quote:

Originally Posted by MT65

As CW said, your carpenter skill will be next for these awards, shelves will be necessary….congratulations…

Quote:

Originally Posted by Braunschweiger

The Shelf will be necessary, the Awards will increase in the Summer with the Great Truck.

I dont know, maybe I'll give em away latter this year.

So I dropped in the 60/52's today drove 15 miles to the lake, turned around put the AC on and drove back. 15.4 mpg. This drive had a stop sign and a turn around. Driving 65/70 mph then into a small townish area 35/40 to the turn around and back. I should add that it is a hilly route to and from so a lot of extra accelerating trying to keep the speed the same.
Just doesn't seem as good with the 58/50's in it but I will live with it for now I guess.

02-20-2022, 05:53 PM	#651
Paul Y Registered User Join Date: Jul 2013 Location: Essex Posts: 936	Re: New 64 Stepper Project Until I get mine all back together I am guessing when it comes to tyre size and the amount of coils to lop off the front end but, if it comes close to what you have achieved, I will be a happy camper. I am wavering between a 225/70/15 and a 215/75/15 both on a 7" rim but that purchase can wait another month yet. P. __________________ Woody's Build - http://67-72chevytrucks.com/vboard/s...d.php?t=658621 If it goes wrong, I blame the Internet...

02-20-2022, 06:07 PM	#652
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project Thanks again. I wish you the best. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-07-2022, 08:36 AM	#653
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project So I drove out to the new So-Cal shop in Waco this weekend it was 56 miles round trip and I got 17.9 mpg. The route had 65 MPH, 55 MPH 60MPH and city driving stop signs to and from. I don't want to go any leaner. Still have some choke tweeking to do though. It's a process. I guess I'm going to find a local job now cause I need the gas money. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? Last edited by The Rocknrod; 03-07-2022 at 08:41 AM.

03-07-2022, 10:34 AM	#659
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project I'll have to pull a couple and see. When I first started this they looked terrible, too much fuel. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-07-2022, 06:21 PM	#660
clemdaddy Senior Member Join Date: Oct 2009 Location: Fayetteville, Arkansas Posts: 1,923	Re: New 64 Stepper Project Nearly 18 mpg is great especially doing 70mph. Sounds like she's dialed in. If it starts easy and burns clean... great job.

03-07-2022, 10:24 PM	#661
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,914	Re: New 64 Stepper Project Any more details on the carb you're using? I'm familiar w/the Demon brand but not so much their current product line & that particular model. Is it for a spread-bore intake or standard Holley square set-up? Easier for tuning vs. Q-jet or Edel/Carter style? What about vs a Holley? __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

03-07-2022, 10:33 PM	#662
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project It's a Street Demon 1901BK. Square bore. Super easy to tune and work on. I hate working on carbs but this one makes it a pleasure, if you can call it that. Attached Images __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? Last edited by The Rocknrod; 03-08-2022 at 12:48 PM.

03-08-2022, 04:30 PM	#663
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project Spark plug: Attached Images __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-08-2022, 09:45 PM	#664
MT65 Senior Member Join Date: Sep 2020 Location: Kila mt Posts: 437	Re: New 64 Stepper Project Color is definitely getting better….

03-08-2022, 09:47 PM	#665
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project Thats as good as it gets. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-25-2022, 08:25 AM	#666
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project When I changed the metering rods from 60/52's to 58/50's the mileage went from 18 to 12. Albeit the quick trip I checked it on was only 6.2 miles up and 6.2 miles back and I passed a slow-poke on the way up. That may have hurt it some. You know the deal they were doing 50 in a 65 on a two lane road, I had to conduct a high speed fly-by. And then starting out I had to floor it to get into traffic. On second thought that whole run was completely different than the rest, too short ect. I'll try again latter. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-25-2022, 09:59 AM	#668
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project Ya I don't see it as normal either. I checked timing, vacuum etc. as soon as I got home, ensured everything was snug. Doesn't seem right to me either. Hey on a good note volts are awesome. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-25-2022, 12:06 PM	#669
Braunschweiger Registered User Join Date: Aug 2020 Location: Braunschweig, Lower Saxony, Germany Posts: 754	Re: New 64 Stepper Project Follow with interest, they have achieved a great result, I will do the same with my engine and have also put an AFR connector in the Header __________________ ------------------------------------------- Greetings Harald My 62 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=829782

03-26-2022, 06:50 PM	#671
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: New 64 Stepper Project 10.8 mpg after a 30 mile round trip. I might be off a bit because I'm using a wooden dowel dipstick and a ruler instead of the gas gauge. So in the AM I will put the old metering rods back in and see what the deal is. I just feel like at 18mpg it's lean as in no balls engine wise. Better today for sure. Oh on another note I went to the Waco So-Cal store show where they had a car show. They had six plaques for awards. I received Best of Show Truck and Fan Favorite. Attached Images __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

03-26-2022, 08:58 PM	#672
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,426	Re: New 64 Stepper Project Man, you're going to need a dedicated shelf for all the awards you keep getting. Congrats! __________________ Christian Carpenter 1963 C10 - Frankentruck 283, 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson



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03-27-2022, 09:30 AM	#673
MT65 Senior Member Join Date: Sep 2020 Location: Kila mt Posts: 437	Re: New 64 Stepper Project As CW said, your carpenter skill will be next for these awards, shelves will be necessary….congratulations…

03-27-2022, 11:35 AM	#674
Braunschweiger Registered User Join Date: Aug 2020 Location: Braunschweig, Lower Saxony, Germany Posts: 754	Re: New 64 Stepper Project The Shelf will be necessary, the Awards will increase in the Summer with the Great Truck. __________________ ------------------------------------------- Greetings Harald My 62 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=829782

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