The 68 auto 340 and the 69-73 340s all had the same cam. Only the 68 340 4 speed cam was different.
Only reason I said solid is because "right now" ain't a good time for hydraulic lifters as no one really makes a good one.
Okay, Georgia, I'm on board with you. I'm having a custom solid roller cam built for my 408. Trick Flow heads, and Trick Flow SBM single plane intake. TTI step headers. Please step up to the microphone, politely, Sir. No BS on my opinion, just an old man looking for information on what may be his last build. Please feel free to PM me, should you so be inclined. I'm an old Marine, so let your dog off the leash. I can handle it without being butt hurt.
I have those in my Ford 400 under the work bench slated to go into Gladys.
What's their solid counterpart?
What are your thoughts on dumbells with say .550 lift? I thought I had read that sometimes that wide oil band could be exposed and cause a drop in oil pressure.
LOL I don't think there's any reason to let the dog out. What specs on your custom roller? I'm curious.
The base circle, the counter bore atop the lifter bores will decide that.
It can be easy or complicated. Let’s try easy. If you know your compression, gear, carb size, etc, write it all down and hit all the cam company websites and see what their descriptions (if any, if not try some others that do, and then you can go back with a better idea which ones are similar) call for for any particular grind. Forget the lumpy, lopey jargon initially. Focus on matching your specs to what each cam calls for ideally. Start writing down the lift, durations (adv &.050”) and overlap of all the cams that line up with what you have. You should get a good idea of what range you’ll be in. Here’s are “examples” of ones I would “assume” to be in your range.
I'm working with my highly regarded machine shop. They're working with Jim, at Racer Brown for my cam. 1998 5.9 Magnum. Trick Flow 190's, and the matching TF single plane Intake. I actually have these parts in my possession. We're discussing a 250-260 duration, and a 670 lift on a solid roller. Pump gas friendly, so 10.6-1 compression ratio. Molnar crank, forged rods and pistons. Pat Blais built 727. Still selecting the right TQ. Rear is a 741 rear that's being sent out for a rebuild, with 3.73, or 3,91 gears. It's going into a stock appearing 1970 Swinger 340. I'm letting my dog out! All opinions are appreciated.
Is Pat still doin it? I'm glad to read that. He's good people. I think with people and advice like you have involved, you sure as heck don't need me around. LOL Keep us posted on it though. Sounds like a winner for sure.
