3406B/C Frankenstein

When I say I work local, I usually stay in a 50-60 mile radius of the shop but it’s in a country area where most of the driving isn’t in heavy traffic or stop and go city driving. Mostly fairly flat with a few short but steep hills.
Just thinking outside the box here but if a 177148 dies out around 1800 and a 78/1.45 lags a little on the low end, wouldn’t it be better to go with the 78/1.45 and use the upper side of the rpm range and just deal with the lag in what little bit of in town driving I do? Seems like from what y’all are saying both would be good choices and it’s kinda like splitting hairs when making a choice. From what I’ve found so far though, the 78/1.45 is about $400 more than the 177148. I don’t know if it would be justifying to go that route with both seeming like good choices.

 

@wore out looking at some other threads you have commented on last night. I am assuming I will need to swap to dual cooling nozzles when running the 160-1131 pistons? Also, an e model governor spring. Would I need this too? If so, you wouldn’t happen to have a p/n would you? Thanks for all you guys help. I don’t like guessing. It would be next to impossible for a newbie to get it right the first time as much misinformation as it is out there.

 

Sounds good but just to make sure you know the details, it is a 7fb block and rotating assembly but has a round port head and a 7e5888 pump. This is probably the original pump to the truck since it came with a 3zj. Just to double check, what’s an easy way to check the pump to make sure it’s a dual scroll before buying 3590 nozzles. They were running 3421 nozzles in it when I got it.

 

I appreciate it @Oxbow. The 9449 should be here tomorrow. I pulled the original one apart and there was more wear than I wanted to go back with so I just ordered a new one with the shorter spring retainer. I will get those nozzles coming asap.

 

@wore out finally got the parts in to get this dinosaur purring again. Went with the 160-1131 pistons and the 3590 nozzles like you recommended. I have a question on that p/n piston, after measuring the bowl with a caliper, the bowl width is exactly the same as the 9y-4004 pistons that I pulled. Only difference I can tell in these is the ring lands are a good bit closer to the top crown of the piston. Just want to make sure these will be right for my application before I get it together and it’s too late to swap them out.