Welcome to CHR Climber!
We’re a friendly bunch here with a lot of hot rod and engine building knowledge – but we do tend to speak our minds! As such (and you did ask) I think you’ve got a recipe for real disappointment here.

Maybe we could start from the beginning. What vehicle are you working on and what are you trying to achieve with this build?

The reason I ask is that the parts you’re intending to use are a real mis-match and unless you plan on running in the stratosphere on your RPM this engine will be a real dog. The heads are a good aftermarket piece for a near-stock engine in the 8 or 9:1 compression ratio range running a slightly enhanced cam. The cam you have referenced (SUM-1107?) is way too much cam for anything that will ever see the street and the Victor Jr (while a great manifold for its intended use) is not designed to idle less than 1200RPM. The Holly 600 is a good carb, but not with this manifold, cam and head combination.

I doubt seriously if you have “pink” rods as they have not been made in years. Up until the late 1990s (I think it was 1996/97?) all stock Chevrolet rods were forged from 1038 steel. Powdered metal rods are forged from 4340 steel and came into play in mid to ‘90’s. The pink rod is a 1038 steel rod that was use in high performance and some truck applications. It was Magnafluxed and shot-peened and then got a pink stripe painted on it to distinguish it from standard rods. So there’s really nothing special about a pink rod and aftermarket or properly Magnafluxed, polished, and peened stock rods that have been balanced as a set are equal to any pink rod that may have been originally been striped by GM. Any true “pink rod” is nothing but a used rod. It would not stand up long to the beating nitrous brings and it would require refurbishing just like any other rod. It better to purchase a good set of aftermarket rods with ARP bolts already installed – they would be stronger and all of the work is already done.

And finally with a 4:10 spool and the 4200 stall speed– unless there’s been some serious work done on the TH350 when everything grabs hold and it shifts from low to second you will have lots of little bits and pieces trailing you in a bath of real hot transmission fluid.

So – if you’re still interested, let’s start all over again and tell us what you’re building and what your goals are for this car.

Best,
Glenn