https://www.summitracing.com/parts/cgt-c5138-188

20 bucks a piece.. Surely they must be the best thing ever, but I can't remember anyone mentioning them.

I have one on hand and it is incredibly stiff and hard more like a spacer instead of a gasket.

Looking for the Edelbrock dual quad intake air gap. This will end up have major cuts done on the divider, tying to save some money with used. Wish a small port dual quad single plane was available.

Any A/C machine guru's in here?

Just picked up a well used Robinair 34788 for pennies. Seller claimed it worked but honestly it was cheap enough even if I have to take it to an authorized Robinair repair center I'll still be ahead. Ive always wanted an ac machine and have really needed one lately.  Ive cleaned it up and it seems to be in better shape than originally thought.

But they are a bit of a mystery to me in how they work, or why they won't. One problem is it takes forever to clear the lines. To the point you will give up on it.

Scenario I want to recover a system to work on it. Set machine to recover, lines are clearing to start recover this might take 20min recover starts and is very slow like an hour. You can watch the recovered amount coming up then then eventually gauges will show vacuum making you think its got all the product out say 1 lb but then it just sits there still recovering, staring at the amount recovered number and it just sits there, no change. Walk away for another hour and it had completed the recover and clear for 2lbs.  Ok so it's working? But why so slow and why would it recover some stall and then continue.

Seems to charge fine until it try's to clear the hoses at the end. I don't know if I fully trust the scales but it went though a calibration with the certified weight with no problems. Also for some reason the internal tank sits at an angle on the scales which I found odd but can't see any obvious issue. Vacuum pump seems to work fine. Air purge is working.

I have the operators and parts manual but a service manual is non existent. They do a pretty good job of forcing you back to a dealer or buying a new one. Thought I would ask here before hauling it 2hrs one way for a checkup.

Anyone have any first hand knowledge of total seal gas ported rings? Sales pitch seems good, unsure of any negatives. https://www.totalseal.com/rings/gas-ported-rings

So I need to pull the engine on my 74 f100 due to a twisted oil pump shaft. Thinking about a convertor change while in there. Any one have an opinion on these https://www.summitracing.com/parts/hup-35-20

Shop truck use. Running for parts, hauling stuff around, running errands. Maybe its not worth it idk.

https://www.enginebuildermag.com/2020/02/comp-performance-group-bought-by-edelbrock/

This is never a good thing in my opinion. Leads to lack of competition in the market place therefor lack of innovation.

I want to swap out the poor shifting NP435 for a toploader. Which currently has an Advance Adapters overdrive in front which will retained and require the 1-1/16" input shaft.

 I'm concerned about shifter location, the overdrive sets everything back about 7.5". Not an issue with the np435 but at looking at most toploaders the shifter is way far back and offset to the left. Any advise for something that would put the shifter as far forward as possible?

This is a down the road project, just planning on what will be needed to start collecting parts. While subject to location and condition what should a person expect to pay for a used unit? Also interested in pro shifting 2-3 3-4

While it is FE powered figured this was a better spot for this question.

What is the factory tire height for a 1974 F100. 390,C6 and I believe 3.73 gear. Just picked up a set of old turbine wheels 15x8.5 want to keep factory diameter for the speedometer. Cannot find a reliable source searching the webs, thought maybe someone here might know.