1951 F4 loses power in 4th gear?

[corvette8n]

Sounds like you have more than one issue here, you need to trouble shoot one thing at a time. Put the truck in 4th gear rev up to about 1500 rpm let out the clutch slowly if truck stalls your clutch is not slipping. Grinding gears could be clutch not releasing or bad syncro gears in tranny. When you say it feels like it is losing power do you mean the motor is reving up and you are not going anywhere or the motor is slowing down?

Nice looking truck.

[GregTX]

Thx for the quick responses

corvette8n - The rpms climb, yet the truck begins slowing down.

I double clutch when shifting. I haven't mastered shifting without using the clutch.

Scooder - I will measure the free play when I get home this evening.

To be a little clearer when I shift I always get a little grind. However, when I started having issues the other day the grinding was more intense. I almost had to jam the truck into 3rd gear from 2nd. From 3rd to 4th it slips right in, but that's when the truck begins to slow down.