This keeps coming up and there is some confusion.

One thought on the manual transmission linkage clearance is ……they are talking about a modern manual like the picture above. Same goes for some automatic transmission notation or warnings. Obviously a modern automatic might be wider than the original manual trans.

Original OEM 3-4 speeds appear to have NO clearance issue. 4 speed the speed cable might need a right angle adapter for better routing.

Same goes for transmission rear cross member. Discussed many times prior. To the point where the shop manual is in conflict whether all models and all years even got a rear cross member. Then the truck where the cross member was lost 20-40years ago with no ill effects.

Same for caliper clearance very dependent on rim off set………but 14” not likely to clear, 15” some might work, 16” almost for sure no problem. My truck has 16” new steel rims from etrailer.com.

One other issue where the caliper might just touch the axle on a full lock turn. This is also a non issue as if happens and your really concerned …….you slightly modify the parts. If you think all the parts and all the variables involved with installing modern parts on 70 year old truck should be covered by the vendor………HALF THE FUN is making it work by some DIY innovation and thought.

I installed CCP kit with hubs and bearing kit years back. Very pleased with the install and function. I drilled a second hole in the floor. Exacting the same size as the orginal for easy access to fluid check. Stock GM. 228 4 speed SM420

I ran with no rear cross member for years. On a whim added an aftermarket cross member ( start a thread with pics) found no difference in operation. Some kits mention cross member must be modified. Again this might weasel words to cover modern driveline.

As for clutch linkage. I used the stock pedals. No interference or conflict. On mine the brake master rod was offset to the left by about an inch. I made a spacer to offset the rod …..so its now a direct in line shot.

Last edited by showkey; 07/10/2022 6:15 PM.