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its not likely roller cam factory, but when you say ready what do you mean? If it came from a GM tbi car like a caprice it would most likely be roller cam lol.
Not entirely true. If you can bolt a 3 port pump to the block,you can use it as a junction.Use an electric pump by or in the tank to push through a 3 port pump,now your bypass works,keeping your electric pump happy,the factory steel line for your carbureator still works,and the pressure relief on the three port pump keeps the needle and seat from blowing open on heat soak with a qjet. That how my trucks plumbed,and it works very well. I had the aforementioned problems until I went this route.Yeah, a mechanical pump is WORTHLESS without the push rod!
Interesting! Thanks for the idea. With that you could hang the pump on any block with the fuel pump boss, just cut the lever flat. Could make a real clean install in place of a by-pass regulator.
The casting number on the back of the block will tell you if it is a roller cam or not. Not sure when they started (mid 90's), but the 10243880 was a popular choice for builds.
Didn't want to get to far into it but since you mentioned,bypass regulator. That is exactly how I use mine. I have a fuel shutoff valve for a lawn tractor in the return line at the pump. I open or shut the valve more or less. The more restricted the return line the more fuel pressure. I used to do the same thing with a tee in the line. Straight shot to carb,dogleg side to return line with a drilled brass restrictor in the hose.But a pump and a fuel valve is so much cleaner using all factory lines and connections. The fuel valve was @buckets idea when I was looking for a fuel safe ball valve for a restrictor.
How long have you used it?
can anyone do that? if they dont sell to people on the street in their store(have to be a commercial business), then why would they do that? Unless fastenal is different where you come from?
to my understanding all the small block SERTAs of the last few years of them being new and aftermarket GM castings sold new today are the same block and they are all 4 bolts and those have more material in the block by the mains because of that issue. I dont know if that means that years block would have that or not
Started in the 80s,at work. It wasn't my idea. Using a pump was my idea which I did a year or 2 ago. But back in the 80's when people were removing fuel injection,not adding it, the shop I was at was using a tee and a restrictor to regulate pressure. All the cheap parts we have now,loke bypass regulators weren't available then. Strokers you ground your own,searched catalogs for suitable pistons and if you had too you reworked rods from a different engine ,turbos were mostly home brew,cheap long rods, you reworked rods from other engines. Etc. Etc.
