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Also.... If you are using the original air valve dashpot [ rt rear of carb ] forget it. The rubber goes hard & you get all sorts of strange problems. Get a new one & also a leather acc plunger. There is a place in Vic that sells them. I found them on Ebay, cannot remember the name. Set AV spring...

Pratty, You do not need a choke here. I can GIVE you any parts, advice on tuning. I built a 440 & we used an 850 TQ. In a 68 Charger. It made 600 hp on the dyno. Trip to Chy on the Murray, 4 people in the car & their luggage, got 19 mpg on one tankful & 18+ mpg on another tankful, mixed with...

GTX John. Couple of thoughts on the 3447s. [1]They have the small airhorn & flow about 575 cfm. The Edel 600 carbs have the same venturi & t/bore size, but with the larger 5" air horn flow about 600-625 cfm. If the engine can use the extra airflow, might be a benefit. [2] If you remove the...

We will have to call you 'Ignorant Bob'. Not from B & S. From Motor's Auto Repair Manual, 1966, page 51. The Editor is an SAE member, & muuuuuch smarter than you are.

M1 on 440 with a TQ, made 600 hp. Had the 4500 version M1, was able to fit the TQ without an adapter plate. Also put a turtle in the plenum base.

I see a hose going to the Vac Adv unit on the dist. The VA unit flexes the p/up wires during operation. Eventually the wires break, may make intermittent contact. So if the VA unit has done a lot of miles, it could be the culprit. Test with an ohmmeter while flexing the wires. Look for loose...

Dual diaphragm boosters produce more output force than a single. Similarly, a bigger diam produces more force than a smaller diam.

You do NOT need a relocation lug! Get some hard plastic that will slide down the gap between the lugs to prevent accidental contact. Silicon in place. Job done!

And..

I wonder if the 098 pri jet is a misprint. The 3447 carbs had the small 1 7/16" pri bores [ versus 1 11/16" for the 3705 carb ]. 1 7/16" pri bore carbs generally had 089 pri jets.

No flat tappet cam/lifter failures? Really? You need to leave that cave you have been hiding in.....

What I am saying: The action of the rocker is quite complex. There is the valve side....& the prod side. The position of both will determine the final overall ratio & will likely be a compromise. D. Vizard tested various rockers & took measurements. A real eye opener.

The bal res[BR ] does get hot, but........... - it could the correct res for THAT coil - the coil could be faulty - it is the wrong BR

Grind off some of the lug on that side...

Find some pre-1995 stock lifters & have them re-faced....

Abnormal [ valve guide ] wear. Hmm. That happens when you go for the centered mark across the valve stem tip that everybody raves about........because at max lift, the roller is NOT centered & is pushing on the SIDE of the valve tip.....& at max lift that is where the SIDE thrust on the guide is...

Smoke might mean broken piston rings.......with oil getting into the chamber. Oil will dilute the octane rating of the fuel....& cause det.

Wrong, RJ Squirrel. The module gets the FULL 12 volts, but when using a coil that needs a bal res, the res is used with the coil [ not the module ]. Post #24. I 'm sure somebody will post a diagram...

Very expensive boat anchor....

The 'G' number is probably a serial number. Contact Comp to see if they have a record. The -6 is probably a tweak/modification to the lobe, ie the lobe has been modified [ maybe more lift? ] & this is the 6th tweak.