Recent content by polyjohn

Many moons ago ago I removed some '68' B&M VB's from my race car transmissions. But I didn't mark them up as I can't remember if they are both reverse pattern? How can I tell a normal selector 321 VB from a reverse pattern VB? I have stripped them both down and can't any difference from the...

Yep, from what I have found out with early CV8 Jensen engines. 361 is the same as the 383 block and bored plus 60! The early Jensen cars were the fastest in Europe, capable of 150mph. Plastic and wooden construction from the wars years almost! I have rebored the 361 blocks myself on several...

hello 66 Hipo, We have done this exact build in a 66 Polara with a 512ci. Yep we had teething troubles too but nothing like yours! My first though is that's a 440 carb not a 520ci carb. We had ours built by HP carbs and they recommended a 950cfm. We tried many fuel systems to get the carb...

Max Wedge, now we are talking! No torque just max RPM's...:mob: 2-1/2 inches tall and 1-1/4 wide that's proper induction.:luvplace:

Some folks are forgetting 'HEADER CLEARANCES HERE'... Most cars have header issues except maybe C-bodys. Low deck engines give around one inch per side extra header clearance! A-Bods especially early ones are notoriously bad for headers. Low deck stroker Big blocks are a blessing and less...

Yep that's the one, common as muck I hope???:thankyou:

Hello Mopar folks, Wanted please a 4617 SA carter carb Any help greatly appreciated from PolyJohn

Bet its the COIL! They say you can run them in start mode, full 13.8 V. BUT NO! they overheat and cut out... 10 VOLTS is plenty. Don't ask me how I know...:mob:

So we are in 2025, five star Gas is a distant memory and where are we with Compression? We have two choices at the pump now 5% or 10% ethanol. What compression should we be running to maximise Pump Gas? Just built THREE 440's with Six-pack (Indian) 2355 pistons and Felpro gaskets. All three...

Very impressive times for smog motor compressions indeed! Yep my mates car ran 12.50 with a crane 480 cam and 8.5 to 1 smog pistons. But it hit a wall after that, it wouldn't get better, I guess that the lack of comp? Fitted the old sixpack pistons now with the four cut-outs and a 509 purple...

It's good to see someone 'championing' the 383 engine at last! 383 blocks are common in the UK due to thousands of dead Jensen interceptors. Its the age old problem, if you are rebuilding any Mopar engine its $5000 all day long. So which on do you choose? Up till now its been the 440 and for...

Back to basics methinks with a 383 engine. The Mopar '516' wedge head was designed for the 361 and 383 engines. It ended up on the 413/426 and then the 440, after the max wedge era. It was never enough head for a 440 and is more suited to a 383. In 1967 the infamous 915 was produced to correct...

Nice one Kjalltrac! Great looking car and stock looking under the hood. You just need a decent steel crank and trick rods then you can go 10's on the motor! Better intake and a dominator that got us down to 10.40 N/A. But next time out we are going 512ci and hoping for a N/A Nine...:drinks:

Anyone in the know about aluminum 318 Poly heads? Copies of the originals or something trick... Who is going to follow up with trick pistons, roller camshafts? Is this the beginning or is this the end of Poly Engines.

As with all rebuilds, first 'port of call' is pistons! What's out there and can I afford them? Most custom builds are with custom made pistons and now we are talking expensive. After that its a custom grind camshaft, can you find a big enough blank to start with? There is talk of aftermarket...