Slant 6 to V8 radiator

[joes68340s]

I recently picked up a 1971 shortbed D100. It was a six originally now 360 with the crappy 4 speed. I have notice that there is very little clearance for the fan to radiator. I can’t install a real fan. Is there a difference in the radiator supports for the 6 and V8. What mods have people done to gain clearance.

[Jim100]

Maybe a different length pulley? I added a fan clutch and got the room by moving the radiator tanks in the steel bracket. Soldered in there.
What transmission do you have?
jim

[joes68340s]

Not sure it’s the granny low 4 speed. I’m going to put an 833 in.

[earlymopar]

I would bet it's how the engine was mounted in the frame, type of mounts, modifications made, etc. The engine is likely forward of where it should be.

- EM

[joes68340s]

Trans is in factory location mounts are factory . Someone must have been through this changing over from a 6.

[dodgeboykim]

Does it have a fan spacer. Clearance should be fine with the 360 seeing as the dimensions are the same as the LA 318.

[joes68340s]

No spacer. I have been looking for photos of factory slant 6 trucks radiator support vs the 318 trucks. Can’t find a shot that shows them.

[PwrWgnDrvr]

All rad supports are exactly the same on all trucks from 1/2 ton to 5 ton.

[joes68340s]

Ok Thanks

[dodgeboykim]

No spacer. I have been looking for photos of factory slant 6 trucks radiator support vs the 318 trucks. Can’t find a shot that shows them.

SL 6 rad support is the same as all other engines in sweptlines using the 2 headlight front end.


Post a couple of pictures to show us problem.

[earlymopar]

Trans is in factory location mounts are factory . Someone must have been through this changing over from a 6.

"Factory" mounts for the engine but in WHAT frame?

- EM

[Roxyflash]

The crappy 4 speed is much stronger then a crappy 833 weak

[Kaegi]

The crappy 4 speed is much stronger then a crappy 833 weak

AGREED. 833 are tough for a car but 420s and 435s are super tough

[DodgeJerk]

Did they install a 4 core radiator when they put the 360 in? That would also cost you clearance space

[joes68340s]

No 3 core. It’s not a big deal I’m not restoring this thing. Just curious. Just old school hot rod truck.

[DavidPope]

Sweat the mounts off the sides of the radiator then swap sides with them. This will move the radiator ahead 3 or 4 inches.