‘67 barracuda heat soak and timing issues
Transfer slots you can use the .020 to .040 rule of thumb IF its a Holley.
Fan should be OK. Looks to be a later one from the tips that are visible.
The fact that I can see a substantial part of the blade has me wondering if its close enough to the core. Don't want it too close of course, it can flex and the engine torques up and then the blade hits the tank or the core. :(
if its a fixed fan (as opposed to a clutch fan) there are various spacers to get the fan where it will be effective.
Here's one diagram from an aftermarket manufacturer.
So they say 1" minimum from the core. Direct Connection advised .75 " minimum to the clutch unit if running one. Of the top of my head I'd say if the blades are 2" away and no shroud, probably losing effectiveness.
Edit. Dana wrote factroy cars are as much as 3" away.
The second point he makes there is really important. The pulleys need to be turning the water pump (and fan) at similar or faster speed than the crank. A/.C equiped cars got a different water pump and IIRC they all got a clutch fan.
Transfer slots you can use the .020 to .040 rule of thumb IF its a Holley.
Fan should be OK. Looks to be a later one from the tips that are visible.
The fact that I can see a substantial part of the blade has me wondering if its close enough to the core. Don't want it too close of course, it can flex and the engine torques up and then the blade hits the tank or the core. :(
if its a fixed fan (as opposed to a clutch fan) there are various spacers to get the fan where it will be effective.
Here's one diagram from an aftermarket manufacturer.
So they say 1" minimum from the core. Direct Connection advised .75 " minimum to the clutch unit if running one. Of the top of my head I'd say if the blades are 2" away and no shroud, probably losing effectiveness.
Edit. Dana wrote factroy cars are as much as 3" away.
The second point he makes there is really important. The pulleys need to be turning the water pump (and fan) at similar or faster speed than the crank. A/.C equiped cars got a different water pump and IIRC they all got a clutch fan.