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Who is Porter??

Mbaird, how does this solid flat tappet cam look from hughes Engines?

Thank you, I was honestly just trying to state how I had a good quality product & thought bigger was better. Made a huge mistake and wasted 3k & now just want some recommendations on how to fix my mistake. I honestly thought the point of these forums was to learn, brainstorm, and get advise...

The "OP" really appreciates the accusations of being a marketing genius. Unfortunately not the case. Just a guy in his late 30s with a 71 340 duster, a job as a retail store manager, & 2yr old twins at home. As far as dyno graphs, the operator my brother was in a hurry and I didn't get a print...

Thanks for all the input, the OP really appreciates it!! Really just wanted to show that more expensive is not always better & aluminum is not always the way to go. Brian at IMM produces a great product with his EQ heads and I wish I had just left well enough alone. I have a 3.91 gear & 3500...

So to get my build back on track and get the best bang for my buck. Whats my best option, easiest way to bump up compression as I really don't want to stroke the motor. I like the little 340. Thinner head gaskets?

Open to suggestions, should I stay dual plane and gor air gap. Or single plane for the intake.

71 340 bored.30 over. Just a basic rebuild not a high performance build. No oiling mods & unfortunately never measured compression. Did do a compression check on each cylinder with new heads. Numbers were consistent cylinder to cylinder around 165psi give or take 5psi. Though that seemed a...

Yes, same dyno & operator. I did sell the EQs to offset the cost. Couldn't swing the new cam, harland sharp rockers & the head. Tax time is here so time for a cam upgrade. Anyone have a recommendation?

No never got flow numbers from Brian on the heads. The car ran great, definitely regretting my 2400 head investment. Just figured the trickflow would be a better head. I guess the cam might be hurting performance but I figured I would have at least picked up 15 or 20rwhp with the trickflows...

Currently running Ld340 intake, lunati voodoo cam with 1.6 rockers. Camshaft, Hydraulic Flat Tappet, Advertised Duration 268/276, Lift .494/.513, Mopar, Small Block,

So I finally got my trickflow 190 powerport heads installed & got the car on the dyno. My previous heads were a set of EQ magnum heads that were done up by IMM. Very disappointing results, car only gained 2 rwhp and 6 rwtq. Guess the EQ heads were the real deal, should have left well enough...

Dave, I would definitely be interested. Just let me know. Thanks

I did have my carb originally jetted at 68 main 76 secondary. I was trying to have my cake & eat it too. Fuel economy and max wot power. I have been playing with decreasing my main jets for economy and PVCR to dial in WOT

I opened up the MAB to try and tune my WOT AFR. It was a little rich 12.2, I was shooting for 12.8-13

What about a bigger pump shot or different pump cam?? Would the 10.5 or 12.5 pv effect my idle AFR??

Check vacuum at idle 10" and cruise is 15"

Hey members, looking for a little help with carb tuning. My carb currently idles at 12.6, cruises at around 14.8 AFR at light throttle. WOT is a solid 12.8 AFR. My problem is at half throttle I go lean 17-18 AFR, then if I mash the pedal down a little further back into 13-14 range. How do I get...

Does anyone know what happened to Duncan motor sports. I really like their pistol grip automatic shifter handle, but the website domain is gone. Anyone have a used one for sale or know of a way to contact them?? Any help would be great, thanks..

Currently running 68 primary jets & 76 secondaries. I also think the WOT Afr at 5500rp seems a little rich at 12.2. Think if I could lean it out a bit to 12.8 I may pick up a few HP. Car is a 650 quick fuel ss dp

I recently had my 340 duster on the dyno and overall everything seems pretty good, except for a lean spike around 4300rpms. Anyone know how I can drop the Afr a little at that rpm? I was thinking maybe a different power valve, currently running a 6.0 which is about half the vacuum I pull at idle...

The car runs great, just when I started my build I was going for 300-325 to the wheels as my goal. I really thought I could hit that with my combo. So I guess some heads are in the future for my winter project. My other toy is an 03 cobra so when I get in the 340 it always seems under powered...

We did a few runs and kept adding timing until power started falling off. We ended up with total at 34 and initial at 16 degrees. The car also started dropping off with power around 5700 and my cam should be good to 6200 rpm. Not really sure why it was falling off so soon...

Results are from a chassis dyno so numbers are at the wheels, Max rpm pulled to 5700rpm. Pistons are speed pro forged .30 over and cam specs are duration 226/234, 110 lobe separation, lift .494 intake .513 exhaust.

Guy dyno tuning said I need a set of aluminum with a smaller cc chamber to get compression around 11 to 1. You guys have any suggestions on heads ?

Took my 71 340 duster to get dyno tuned, end result 271 HP & 277 tq on a dyno jet. This seems pretty low to me, I was looking for a little over 300. Mods are ld340 intake, voodoo cam, 650 quick fuel carb, headers, 2.5" exhaust, fbo ignition, stock J heads. Do these numbers seem right?? Motor...

Hey guys, New to the site and had a question about valve springs. Been doing some research on cams and I think I want to run the lunati 60403 in my 340. Car is basically stock except for headers, ld340 intake and a holley 650dp. I don't want to have the heads machined to run the lunati dual...