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Guys 6000 is good all in. When I posted 5000k its a street car. Didn't want allthe power on the top side.

Guys The pistons are # 243. The car had a purple cam and the idle was rough. After research on the teardown it was index wrong. I don't want to get to erratic as the TTI headers are wrapped around the steering column and a rough idle causing major clanging on the idle circuit GH

Car has A/C and looking to get the most out of a 340 on the street. 1972 Demon - 4/Speed with a 355 Rear End Car is 3o Over / Kb Hyper Pistons #246 / TTI Headers / Have J and X Heads/ Stock Thermo Quad . Stock Manifold / 15" 275/60s Rear Looking for power 1500 -5000 range

Wanting to know if anyone has used the $35-50 range imported stock oil pans. I am concerned about oil leaks on a rebuild.

That is what I am having the shop do c.c the heads. I wanted to see if I was missing anything. Do it once and do it right!!! Does any one know how many thousands are left for milling??

Purchased the Kieth Black Hyper Pistons that talks about .018 out of deck. Stock Compression of 10:2:1. Everything I read on X heads shows 72c.c. At 72 c.c the compression is 9.5:1. The piston is a stock replacement. How did Mopar achive or claim 10:2:1. What am I missing ????. At 9:5:1...

Wondering if that manifold will accept a stock Thermoquod on a 340 ?

1971 Demon 340/ 4 speed /x heads / Stock thermoquad / 355 gear. Street car . Looking for power up to 5500. Every one keeps hyping the Comp XE268H Cam??????? . Any ideas on a upgrade manifold that will work with the carb set up..

Guys I will post the dyno sheets. I have a good freind is a old school muscle car mechanic and he is running out of ideas . The poor vacum is drving me crazty. Its hard to get a carb to idle with poor vacum

I have the dyno specs. I agree . Unfortunatly he used his carb . And I have no idea. I have had 3 different carbs on this motor. Same results. The expansion is why I bought adjustable rockers to see if that was a change . Same results

The motor and cam was broke in properly on a dyno. I have tore cams up before. Proper lube and oil additive . Inner springs removed etc. Cam is good on the lobes and proper break in.

Yes to the adjustable rockers. The carb was taken off and put on a 396 Chevy. Vacum 15 inches ran like a sewing machine. I have ran the motor with vacvum advance. Also put one of those orange revinator box'e with no advance hook up. They insist they run better with no advance . I will try...

Put a timing light on it. No response to the vacuum. If i have to pull the motor... any cam recomendations?

4 speed. 3:55 gears. Car is a dog from bottom to top. There is no power anywhere. Also set distributor by ear with no vacuum advance hooked up

Unfortunately i had a family member that is supposedly a mopar gear head assemble the engine. I assumed the timing marks were lined up but have no idea. What cam would you guys reccomend with the pistons im running?

No pinging in engine , tried adjusting the timing all over the map at initial, does not change the vacuum at all. Why would Comp Cams reccomend this cam. Can i salvage this motor with this cam? It idles horribly to the point that the tti headers are banging on the steering column. Or will i...

initial timing is at 8 degrees advanced

Cam was reccomended by comp cams for a very mild street cam. Do you agree with their reccomendation? Timing is 36 all in. Vacuum does not change no matter what i do to the distributor. No this is a new cam, everything in the motor is new.

1972 Dodge Demon 340 with: X heads, Kieth Black Pistons 72cc 9.5:1 Comp Cam: Grind - CRS 280H PP474 Lobe Separation - 110 Duration- .050 Intake - 233 Exhaust - 240 Lift - .474 for intake and exhaust hydraulic Intake Center Line - 106 Engine has no bottom end torque and idles terribly due to...

:violent1:Removed valve cover . had water on center top head bolt . Does this bolt go through any water jacket. If no where could the water be coming from

Yes / The motor idles fine. The engine revs up smoth and responsive. If you hold the engine at 2500 rpms and back of the throtle it will shake prior going into a idle (around 1200 - 950 rpm ) After it idles for about 30 seconds its fine

Also ran a holley orir to the Thermoquad . It was a differnt problem. the idle circut was rich / changed jets and was frustrated of trying to make work. The thermoquad is much better. Glen

The engine has standard brakes . No booster. I have tried another distributor same deal

1971 / 340 /4BBL THERMOQUAD STOCK CARB/ COMP CAM INTAKE 474, EXHAUST 474. DURATION @.050 INTAKE 233, EXHAUST 240 . LOBE SEPERATION 110.0. HYDROLIC LIFTERS. 9.5 TO 1 COMPRESSION , TTI HEADERS . NEW COIL ACCEL / NEW WIRES / NEW BALLASTER/ NEW ELECTRONIC ORANGE BOX./ REBUILT DISTRIBUTOR /:banghead...

Had a previous cam and lifter failure the new cam has maybe 6-8 hours on it. changed the oil at 6-8 hours there was quite alot of metal shavings more than you should have in break in. the cam is fine the motor did not get thoroughly flushed out when the new cam was put in, and 3-4 lifters...

Hey guys long story short i need to put new lifters in my motor. Will i be okay putting new lifters in my motor WITHOUT removing the inner springs? the motor already has the cam broken in. I know there is a tool to remove the inner springs but how hard of a process is it to do? ive heard of...

thanks rumblefish! no the heads have not been ported, just a fun car to take to cruise nights and lay some rubber with. putting the carpeting in this weekend we found out the heater core was leaking! luckily the old dodge only had a few bolts holding it all in.

found out this is the cam im using a comp cams purple cam... any idea on hp now? http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=641&sb=2

yeah it is a vacuum secondary. my dads a mechanic and my neighbor... where the car is at is an even better mechanic im 18 years old and have been into working on dirtbikes etc alot of my life no so much cars, i know how alot of it works just not alot of the specifications on stuff like the...

okay so your saying the x and j heads are the exact same and one doesnt have any benefits over the other? i live in the chicago area andi dont plan on driving it in cold weather so this shouldnt be an issue??