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I'm seeing typical comparable condition LD340 at $100 more than RPM's. I believe there's more opportunity to get a RPM for a greater difference with patience. And the LD340's for sale are generally in worse shape than the RPM (30-40 years newer) Also having the part number on the LD340 seem to...

RPM 7176 looks very similar. Just ports arrangement is flipped top to bottom. Both seem to have the same amount of stock resemblance to me.

They don't out perform all the others. There's a bunch of old school hype about them. The Edelbrock Air Gap outperforms it. And the Edelbrock RPM matches it. But the LD340 will outperform those 3 other manifolds you have pictured. That's not saying much. People get off on them because some...

I’m thinking that 50 year old AVS carb may be suspect if there’s dyno repeatability issues I know it was rebuilt by woodruff. But what about the throttle shafts, bore wear and other things. Some stuff just doesn’t rebuild 100% like brand new out of the box. Would have like to seen known good...

I believe the dropped cylinder was a burnt plug wire under a shielded boot of some sort. That was fixed the second day.

AVS strip kits are long discontinued and I doubt many shops have those parts laying around since most people don't build performance engine with those OE carbs. The jets from an AFB do interchange though. But the 3-step rods and springs are unique to AVS’s. BTW, 1968 AVS's have the idle...

Rebuilt original or NOS. Your pick

Wow, you lucked out. Steve Cabral's 71 340 4spd Duster is an N95 car. Follow everything you see here. One of (if not THE) the most correct restored 71's around.. and it's a N95 car. Steve's great guy, and goes by steve70 on Moparts. It looks like it has the passenger cowl mounted...

This is a N95 Automatic non A/C car owned by GY3 71 Demon talked about in this thread here: 1971 340 Restoration reference photos Not sure what applies here to an N95 4-speed car. Notice the speed sensor that is tapped into the speedo cable in picture #3 under the master cylinder.

I bet this 71 Demon is N95. It’s got a 1971 original issue California license plate in it. Not sure what drivetrain combo it is though. He might have pulled off any remaining smog stuff too. https://www.forabodiesonly.com/mopar/threads/here-we-go-again-demon-style.527410/

Not 100% sure on 4speed The 80k mile N95 340 Demon car that I based my auto info was not messed with very original. I think 2 owner car. Have you read through the 1971 Repair Manual? There’s a special emissions section

Is your car and auto or 4spd ? Looks like it’s not A/C And 71 A-body, 340, auto, N95 will have a bunch more stuff than just the Vapor return line (a 50-state item in 1971) For an automatic car: At least- -vacuum control module on the passenger cowl with vacuum and electrical hook up -Speed...

What's a PIAB ?

All 1968 AVS’s have one screw and lead capped base plate screws. Sometimes you can pull the caps off and adjust the screws. I couldn’t with mine. 1968 engines with AVS’s on 340, 383, and 440 had them. 1969, 1970, and 1971 AVS’s have two exposed adjuster needles in the baseplate. I had a 4425...

Even those good gaskets still partially stuck to the bowl.

Edelbrock used to sell a kit 1799. But looks like they discontinued it. It would work on Holley pumps.

what intake and carb are you running in that ? I have smaller cam in my 416, with M1 single plane and 750 BG silver claw carb. Great throttle response. Don’t know if that’s carb or intake or both. I have a RPM intake. Never courage to try it when current setup seems pretty good.

i think that’s how I cracked one. Didn’t look like it was screwed in far enough…. Kept tightening till it cracked the case.

do you have a link to the gasoline rated liquid seal ??

If you over tighten it, you’ll crack the case…. I did once :( Edelbrock sells rebuild diaphragm kits, BTW.

Its not just a early B-body core. it’s a 69 440HP automatic with A/C carb. not a low performance C-body core or less desirable car. but not a 4-speed car or non A/C car.

mcodecuda just showed what this particular carb number sells for in real life. Not advertised asking price. The “ones that sell for big bucks” are different numbers, harder to find, and/or for more expensive cars. OR they are completely re-plated, re-bushed. Which costs and additional $200+...

Seems like the "best" current bolt-on EFI's are still iffy. Friend works in high end shop that uses EFI on most builds. Last one was simple no-brainer build. Way overkill engine shop and Holley Sniper was not right on dyno. Holley was even present. Holley sends out another new unit and it...

And gain new EFI headaches

Watch the sock to tube connection on these aftermarket senders. In 8 years mine was completely loose. And I noticed a brand new one had glue on the connection. Can’t remember if mine did originally. The sock connection is stepped inside. It fits 5/16 and 1/2”. Not sure if the OE sock is like...

This is the black thermosleeve I use. There is orange and silver too. Thermo-Tec Heat Sleeves

Those were made by FABO member ns1rm21 with the 68 Hemi Dart. His day job is making custom SEMA show cars at www.purevisiondesign.com

I routed the fuel line away from being trapped between the hot soaked block and hot soaked alternator. Then routed firesleeve over everything back to frame rail past firewall where it parallels the headers.

Wieand 8007 that I have has a TQ pattern and no egr. Also had a flat spot on the heat crossover to bolt a bimetallic mechanical choke pull.

They are local. Just called to get them out to the Spring Fling show next week. I talked to them at the Grand National Roadster Show and they sounded very interested in comming. If anyone would like to talk to them in person at the show please contact me stevewall68@gmail.com Or if you'd...