Would these be a matching pair....manifolds

[Chargerguy74]

Cast numbers on one:

3751068-10
3.1.73
on cast simulated tag BZC
night shift

Other manifold

3751071
on cast simulated tag C13 (same date as other???)
Day shift
AMS
N 2

Also, these would be for big block HP road runner/charger??? Thanks!!!

[8WHEELER]

Finally got my casting book back out


3751068  LH  1973-74   B   400  440   HP MANIFOLD


3751071  RH  1973       B   400  440   HP MANIFOLD

Yes they would be a matched set.

Dan

[Chargerguy74]

Thanks Dan. My casting number book was a few days away from me. I'm going to start carrying it with me.

Ryan

[694spdRT]

Does the passenger side HP manifold look very similar to the 68-69 HP manifold? I found a loose set of these later manifolds in a junkyard and the drvier side is an HP, but the passenger side looks a little different.

Thanks

[Chargerguy74]

Yes, the passenger side has a different look to it.

[Chargerguy74]

Wouldn't C13 be December 1 1973??? Checked it out, C is december, not March. Or would it be December 13 1972? Since the casting number is for 73 only.