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What real world experiences have you guys had with upgraded valve sizes on a SBM with a 3.940 bore and small port heads? "Conventional wisdom" says that 2.02's suffer from shrouding. Yet plenty of guys have slapped J heads onto 318's. (Biggest hurdle there is getting over the miserable...

I did some racing last weekend. Motor threw the fan and powersteer belts. On the last pass, it also lost one torque converter bolt, and stripped the helicoil on the opposite side. Motor is a stroker. Given that there were issues at both ends of the crankshaft, could an imbalance issue be...

I ran a 340/418 stroker at the drags yesterday. First run it spat the power steering belt, and turned the water pump belt inside out. We left the power steer belt off for the day. (After all, that power steer pump is stealing horsepower) But next run it spat the water pump belt right off...

a couple of weeks ago, myself and a couple or mates went to a party. One of the mates is from the other end of the country. The party was also a beer pong championship/tournament. One of the mates I went with actually lives at the other end of the country, and I don't see much of him. We...

we've got a 340/418 stroker motor. Which is still pretty fresh. but it's blown a head gasket. In spectacular fashion! I've not seen a gesket pop this severely before. So am looking for some insight into why it did this. motor has brand new RHS heads from Brian, and the decks were machined when...

I'm in the market for some thin as sbm head gaskets. I had a nosey at Summit, but I'm lousy at computers, and couldn't find anything. Plus I don't buy from Summit as a rule. I'm far far away from the US. I have a mate who owns a speed shop, but he's selling up soon. So I want to have a spend up...

Last night we tried to give a new motor her first fire up. After the obligatory problems that always seem to go with a new engine, it burst into life. Oil pressure came up instantly. But the motor made a horrible clacking sound. (I wish I'd taken a video) It has a remote oil filter. Our RHD...

Today I got a 318 core that I picked up for a $100. I bought it back in January, but it was a 7 hour drive away. So I had to wait for a tool rep mate of mine to pass through that end of the country to collect it. (He reckons I owe him a new back after he tried to load it into the back of his SUV...

I was rereading "how to big big inch small block mopars" last week. The guy I borrowed it from wanted it back. (Thanks Dad lol) Anyway, it mentions the V10 conrods being made from the Magnum forgings, but machined with the C2C being just a fraction larger. With motors running a 4" arm, the...

hey guys, anyone know what these numbers mean? MH340R(?) (I think it's an R, the numbers are getting hard to see) then 38330001. and the casting numbers on the side are 2780930-340-2 And the other side has 9 28 71. (Which I presume is the casting date?) It also has R and a 3 on the...

Bit of a newbie honing plate question, When an engine is being honed with them, does it need a plate torqued down on both banks? Or just on the side being honed? I realise that While cast iron isn't as ridged as granite, (Hence using honing plates) but it is standard practise to have the main...

Just out of curiousity, is there any reason why one couldn't use 5.2 Magnum pistons, in an LA 318? Magnums are next to non existant in my part of the world. But I was mindlessly surfing and I came across a set of Magnum pistons with a 1.755 comp height. (Flat tops too) Now I've heard that...

I came across this auction, http://www.trademe.co.nz/motors/car-parts-accessories/chrysler/engines/auction-527624548.htm But I've never seen SBM heads like these? Is the seller mistaken? Or are these just some head I've never before? (Anythings possible, there's plenty I've not seen)

I need your advise team. My dad has decided to stroke his 340. It's developed a nasty knock if the car is driven faster than 42mph. Before he fitted the engine to his car, it sat in a loft for 10-15 years. A friend his his from back in the '60s had run it in a class winning Marathon boat, back...

Im real new at head work. In the past ive done nothing apart from get a shop to replace guides, seat inserts, and recut seats, and valves. And I've lapped valves, and shimmed up my valve springs to get the correct pressure. But I now need to get my heads sorted out on my 318 before I proceed...

Would it hurt any to run a Nail head ex valve, with a tulip head inlet valve? I'm slapping together an engine using parts aquired cheaply/what I've got laying around. And thems the bits I have. The main difference I see is the nail head valve will fill up a fraction more of the chamber volume...

I came across this auction on fleabay http://cgi.ebay.com/ebaymotors/Sealed-Power-Dodge-valves-and-springs-318-340-360-NOS-/300547041674?pt=Motors_Car_Truck_Parts_Accessories&hash=item45f9ffe98a does anyone know what size these valves would be? I did a search, but I was unable to find what size...

Okay, here's a dumb question for you's/ excluding factors such as pushrod length, valve to piston clearance, etc, what is the maximum safe deck cut for a 318? Is there a rule of thumb for a safe limit before the structural integrity is comprimised? (Not that I want to run an engine that close...

Has anyone done this? I have a .030 over 318 that I was given. (Saved it from getting scrapped) Upon pulling it down, I found it was quite decent inside. (Pistons don't look very old at all) I've since picked up an XE274 for it, and an LD4B. And I'll be using a pair of 675 heads with 1.6, and...

What diameter are factory chrysler small block valve stems? And how many degree are the factory valve locks?

Just a quick question regarding valve to piston clearance. I realise that this will be effected by changes to valve timing, and the lobe seperation angle of a given cam, but how big does a cam need to be before there will be valve to piston clrearance issues on a 318? I'm planning to zero deck...

Correct me if I'm wrong, but do the truck/van small mopars have a rear sump? Does anyone have a picture of a SBM on an engine stand with a rear sump (preferably a standard one) on it? I'd like to see how the deep part of the pan is oriented compared to the engine mount ears on the block. I...

I'm throwing together a low(ish) buck 318. I have the 396 heads,(Lame small port ones) but they've had 1.88, and 1.6 valves fitted to them. I've bought an xe274 cam, and the block is .040 over. Problem is the inlet manifold. I'd kind of like to keep the small port heads to retain strong...

Anyone know how many crank HP the stock mech fuel pump can support? An electric fuel pump (Like an unbranded holley blue) isn't too expensive, but thats money which isn't being spent on other aspects of my build. Down the track It'll need a decent fuel pump on account of an intended 150hp shot...

Is anyone running one of these antiques on their 318's? I have one on my valiant, but the car isn't quite on the road yet. Given what i've read on hear recently, it's going to be a turd with the rest of the set up on that engine.

Hey team, New user here. I thought before I made my 1st post, I'd give the small block tech forum a good read. I've just read almost all of the threads that relate to me going right back to the 1st post. (Took a lot of reading too!) Anyway, I was given a 318 small block for free a few years...