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Re: Need for speed
Bodini #1362711 Sat May 30 2020 05:14 AM
Joined: Aug 2004
Posts: 1,395
ODSS Lawman
Fox nailed it. The reason your truck isn’t going faster has nothing to do with the truck but rather the driver. At 60 it can be louder than you’re used to. Just keep going.

I’ve taken trucks of your similar setup well beyond speed limits once determined all driveline components are sound and operating as required to safely go faster.


SWEET
Sergeant At Arms
Old Dominion Stovebolt Society

BUNS?!?!?! Where we're going, we don't need no buns.....

1950 GMC 450 (25% owner)
1951 Chevy 1/2-Ton
The GreenMachine
In the Stovebolt Gallery [stovebolt.com]
Re: Need for speed
Bodini #1362723 Sat May 30 2020 12:07 PM
Joined: Sep 2013
Posts: 1,043
M
Shop Shark
One important thing to remember is we're spoiled to QUITE vehicle cabins these days. So isolated from the normal mechanical noises our vehicles make that they could be electric and often times not be much quieter. AD trucks are not like that. You hear every little tick and tock, clank and possibly knock (hopefully not a knock).

The above said, if the valves are not properly adjusted, a 216 or 235 can be a lot noisier than it should be. So, make sure everything is as it should be and then check out a rpm/speed calculator to determine how many rpm you're turning at a given speed and don't worry about how things sound. If another stock AD truck is in your part of the world it might help to ask a ride just to broaden your experience base.


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1951 Farmall Super A



Re: Need for speed
Bodini #1362726 Sat May 30 2020 12:58 PM
Joined: Aug 2004
Posts: 1,395
ODSS Lawman
Also, check your engine tune. Minor adjustments can make big differences.


SWEET
Sergeant At Arms
Old Dominion Stovebolt Society

BUNS?!?!?! Where we're going, we don't need no buns.....

1950 GMC 450 (25% owner)
1951 Chevy 1/2-Ton
The GreenMachine
In the Stovebolt Gallery [stovebolt.com]
Re: Need for speed
Bodini #1362731 Sat May 30 2020 01:57 PM
Joined: Sep 2001
Posts: 30,466
ace skiver
"The above said, if the valves are not properly adjusted, a 216 or 235 can be a lot noisier than it should be."

When you next plan to adjust the valves, take off the rocker-arm assembly and inspect the surfaces on the tappets that contact the top of the valve stem. They might have wear-indentations in the contact-surface. This produces noise and also results in incorrect valve lash/gap settings (most likely affecting gas mileage and performance?)

These surfaces can be carefully resurfaced/smoothed. If that is needed, you will have excessive noise when the engine is running. (there are other "wear areas" in that assembly (the two "pipes"), but those indentations on the tappets/rocker-arms are the most most common wear areas)

If/when you ever visit northeastern NC, please stop by my house for a ride. You can sit in the rear seat of my Suburban and we will be able to easily talk with each other at 60-65 mph.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Need for speed
Bodini #1362734 Sat May 30 2020 02:04 PM
Joined: Feb 2004
Posts: 21,033
H
Boltergeist
Today's engines are barely above idle speed at highway cruise. No wonder they're quiet! I actually went to smaller wheels on my daily driver (04 Ram 1500) because the engine RPM was too low. By the time the little V8 and the OD transmission worked its way through all the gears, got into overdrive, and locked up the torque converter, the thing was running 75 MPH at 2000 RPM. Any attempt to run slower resulted in constant toggling in and out of converter lockup, and/or shifting out of overdrive at the slightest hint of a hill. Cruise control? "Fuggedaboutit!" To keep the transmission from eating itself, I changed from 17" wheels to 16". Now I can run 65 or a little less at 2K, which is the place the engine likes to cruise.

If you're not running a stovebolt engine 3K RPM at highway cruise, you're lugging it.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Need for speed
Bodini #1362735 Sat May 30 2020 02:08 PM
Joined: Feb 2013
Posts: 440
5
Shop Shark
I concur with Sweet!
For it was he whom had my truck with a 216cu up to 77mph! drive There is a picture out there somewhere of the recorded speed! He also broke the land speed record for a 53 3804 with original power plant!
Jim


Jim Schmidt.
Bucks County, Pa.
1953 3800
Pix in Photobucket
Re: Need for speed
Bodini #1362736 Sat May 30 2020 02:17 PM
Joined: Oct 2015
Posts: 246
P
Shop Shark
Install a tack and judge rpm by that as opposed to sound .
A number of years ago I did a 600 mile day trip at 60 mph at 3000 rpm . The truck ran fine and required no down shifting on the larger hills as it did when I had an over drive trans. I even had a little better gas millage than when doing 60 mph at 2200 rpm . In time I realized that the motor seems to come alive at about 2500 rpm and starts to drop of at around 3000. I'm not a mechanic and any tuning I do is by ear and I sure guess a real mechanic could get it to perform better , but they still need to rev.

John


good planning is no substitute for dumb luck
Re: Need for speed
Bodini #1362750 Sat May 30 2020 03:26 PM
Joined: Jan 2002
Posts: 2,097
C
Shop Shark
Good post. Makes me think more about maybe I'm babying my truck a little too much when I start worrying about driving faster than 2500 rpm with 3.55 gears.


Craig's '50 Chevy 3100 5 window
My truck
If I'm not working on my truck or VW camper, I'm fishing with the wife or smoking Salmon.
Re: Need for speed
Bodini #1362991 Mon Jun 01 2020 03:34 AM
Joined: Jun 2010
Posts: 258
B
Shop Shark
Ditto on the 16" rims and tall tires. That's what I did to my 49' 3600 with a Dana 60 rear end geared 3.73. I took her out today and ran her 60 mph at 2600 RPM.


1949 Chevy 3600
1975 W-25 Hurst Olds
1991 Chevy Silverado
1970 GMC 1/2 ton Fleetside
2010 Chevy Silverado
I'm a GM man!
Re: Need for speed
Bodini #1363005 Mon Jun 01 2020 11:07 AM
Joined: Sep 2001
Posts: 30,466
ace skiver
Thanks for the real-world report, bztguy


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
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