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I’ll try and do a comp test at the weekend Plugs are ok as far as I can remember but I’ll check when doing comp test Thanks Again Kev

I think you may be mistaken regarding the fuel. Shell V-Power is 99 RON high grade fuel? Thanks Kev

Childs & Albert Con Rods I-Beams 6.123 Rod Length Piston to Deck .024” (11.5cc) Head Gasket 9cc Thanks

Hi, I haven't measured the compression, it's just on the stats the engine builder gave me, so no, I can't be certain. Here is what he gave me: 4.030 Bore Piston to Deck .024” (11.5cc) Head Gasket 9cc Head 69cc Total 89.5cc Compression Ratio 10.3:1

Thanks for all your inputs guys, I really appreciate it. To answer one question asked, the billet Pertronix dizzy has no vacuum advance Based on your assessments I need to either change the heads, lower the compression ratio or what else?

Thanks PRH Pistons are Diamond Flat top PN: 51026 - not sure if that helps So what would you suggest? Thicker Head Gaskets?

Cam CompCams 20-232-4 Hydraulic-Use in 340-360 Street Machine. Dual exhaust, 3.53-3.91 gear, 9:1 compression. Headers & aftermarket intake, 2500 stall. .480 / .480 Lift – Hydraulic 230 / 230 Duration @ .050 280 / 280 advertised The compression is what the builder gave me on collection so presume...

Hi All I have a 73 Duster with a 408 Stroker. Ever since it was built I have been having detonation (ping) and running on when ign is killed. I have gone through 3 different ignition systems 1) Original Mopar 2) MSD 3) Pertronix It works much better with the Pertronix Billet Distributor than...

Hi Guys Sorry it has been so long replying. With the new cam installed the car is a completely different beast, it drives better and lights the tyres much more easily. I have been enjoying using the car hence the lack of posts, and the weather over here has been reasonably good for a...

Centreline was bang on when we checked. Did not check ignition timing. Car came with Vac advance disconnected and when I did connect it ran like a dog! Did check ignition timing and it was correct to specs. New cam is installed and motor should be ready to fire in 2 weeks (I only get to...

The Thumpr cam comes in at 2000rpm, the Xtreme Energy one comes in at 1300rpm. We didn't try a second gauge, but 2 Mopar guys over here say the Thump range are useless for anything other than an unstable idle, and the cam is the problem coupled with the 360's relatively low compression...

Hi The cam IS the problem and the Xtreme Energy one I am installing is part number: 20-222-3 as recommended by a Mopar tuner over here. Thanks for all your inputs guys. Cheers Kev

Hi Everyone and Happy New Year! Just thought I would post an update now I have started the cam swop. The cam that I have removed is a Comp Cams item from the Thumpr series, part number: 20-600-4, with an Intake duration of 279 and an Exhaust duration of 296, and a rev range of 2000-5800...

Thanks RusrtRatRod for a brilliant explanation. I will re-cam with something closer to stock and let you know how it goes. Thanks again Kev

Hi Guys Thanks for your comments, it does seem odd that all are that low. I do believe that unknown lumpy cam could be part of the problem, but I'll redo the test with the squirt of oil and let you know the results. Thanks again. Kev

Hi All I have a question (and I think I know the answers) but I would appreciate your opinions. My 73 Duster 360 has a few issues I want to deal with. 1) It refuses to spin the wheels 2) Its averaging 14mpg 3) It seems to be breathing a little heavy other than that it runs perfectly...