desmocruiser
SILVER Star
Thank you, they are always a work in progress!!BEAutiful 40. Well done
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Thank you, they are always a work in progress!!BEAutiful 40. Well done
Are you in 4Lo?Current top speed is about 48mph. Not a problem in Austin traffic, but I am curious what I should expect with a 4 speed transmission and an older engine. I have a replacement 2F on the way.
Mine has a tired F with 4 speed and 33’s. I have had it to 85 with 1 hand on the wheel. 65-70 mph is very common for me with my elbow on the window sill and a light hand on the wheel.Out and about getting parts. Construction on the back roads made it an offroad experience.
View attachment 3740809
Current top speed is about 48mph. Not a problem in Austin traffic, but I am curious what I should expect with a 4 speed transmission and an older engine. I have a replacement 2F on the way.
View attachment 3740810
Nope 2 high. I suspect it has more to do with the non-standard Carb than anything else.Are you in 4Lo?
SameMine has a tired F with 4 speed and 33’s. I have had it to 85 with 1 hand on the wheel. 65-70 mph is very common for me with my elbow on the window sill and a light hand on the wheel.
I can put it up on jack stands and test that. As far as I can tell there are no vacuum lines that run to the transfer case. (5/75 chassis)something that happened to me and is pretty basic but can be easily overlooked on early 40’s is your vacuum transfer not unlocking. If you front driveshaft spins your transfer is engaged and 48-50 is likely top speed. As soon as I fixed this my 1970 will run 65-70 without pushing it.
Don’t even need it on jack stands. With hubs unlocked, just try to spin the front driveline by hand. If your trans is in gear or parking brake engaged, you won’t be able to spin it if it’s engaged in 4 hi and it should spin with very minimal effort if all is disengaged.I can put it up on jack stands and test that. As far as I can tell there are no vacuum lines that run to the transfer case. (5/75 chassis)
What carb are you running? Do you know your timing and the health of your ignition components? (Good plugs, distributor advance works, good plug wires, etc).Nope 2 high. I suspect it has more to do with the non-standard Carb than anything else.
IIRC In low range my speedo is way off, I say by the 2.3 ratio or what ever the transfer case lowers it by - not that the speedo actually reads correct - I think my needle return spring is weak.
I have a Rochester carb. The plugs, wires, and points are all in great shape. I need to test the distributor advance again.What carb are you running? Do you know your timing and the health of your ignition components? (Good plugs, distributor advance works, good plug wires, etc).
Hubs unlocked (2x4) and parking brake engaged, the front driveshaft spins freely.Don’t even need it on jack stands. With hubs unlocked, just try to spin the front driveline by hand. If your trans is in gear or parking brake engaged, you won’t be able to spin it if it’s engaged in 4 hi and it should spin with very minimal effort if all is disengaged.
Yes, many of the distributors for these engines vacuum retard. I converted to a vac advance distributor.I have a Rochester carb. The plugs, wires, and points are all in great shape. I need to test the distributor advance again.
Looking at the FSM, it looks like vacuum should cause the timing to retard. That is counterintuitive to me.
View attachment 3740958
I need to look again, but I think my vacuum diaphragm is like the top photo, not the bottom.
Are you running 4.88:1 gears in your diffs?I'm running 33's and have a Weber carb. Try to keep around 3000 rpm, at that I'm doing 60. Occasionally go up to 3300 rpm and am in the 65 range. Not a ton of shaking but it definitely feels like parts are going to start flying off if I push it any harder.
I have no idea. How can I determine that?Are you running 4.88:1 gears in your diffs?