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Saw this in a youtube video and thought a screenshot was in order. They didnt say what this was in but I see Early A 273 valve covers, shock towers and radiator.

So, between the 2 type of seals, umbrella and posi-seal, which one is better (Im guessing the posi-seal) and how does the umbrella seal even work? The umbrella seal moves up and down with the valve while the posi is seated on the guide with friction or a groove. I seemed to have ordered the...

WTF, do they weld these on? 83 Mazda posi-loc style seals (not the umbrella) sort of a gold color. I put a pair of pliers on them, nothing doing. Tried to turn them...nope. Got a screwdriver under the lip and tried to pry it off, the metal started to deform. WTH is keeping these on? I saw a...

Whats benefit of platinum. 2X the life? My SC400 says change plugs (double platinum @ $11/pc) every 60K miles and its been that. Getting some sooty bumper on this. Single platinums are $4, Coppers are $3. changing plugs on this car is a chore: 5 engine covers, and the entire intake tract to the...

What's the trick? I got a glued on head gasket on a 50 year old AL head and I dont want to wire wheel it for obvious reasons. Plastic spatula isn't making a dent in this gasket. Do i resort to a metal spatula or is there a spray you use to dissolve the gasket, like the old days that is AL safe...

Im calling BS to this " -1 is better than -8 (or even 15!)" hogwash. Id like to propose a theory that the suffix behind the 2780930-340-x is nothing more than a 4 based (?) casting cell number or casting position in the foundry, Not a core change or revision number. The sand cores were all...

Member is selling a very early 340 cast block, 6/22/67. This would make it a very early casting. It has been said the suffix after the casting number (-4) may be a 4th core 'revision' and everyone is hard up on the -1 blocks being the best or thickest or having the least core shift. I don't...

Called it years ago. " Once a maker makes a drop in electric drive train for a Chevy 350/350, watch it catch on.." The new crate motor by EV West and Revolt fits just like a small-block Chevy Whats to say it wont be mandated under a new 'green' administration for a cars prior to 1986? Like...

Whoa, check this 91 Dakota 318 to 92 Magnum 5.2 HP jump: "1992 Dakota Both V6 and V8 engines gained a whopping power boost. Horsepower jumped from 125 to 180 on the V6 and 165 (LA) to 230 (Magnum) on the V8." Man, that's a 40% power increase! In part due to Magnum heads superior closed...

Interesting website I found about industrial 318's with complete part number breakdowns. http://www.numeralkod.com/cross/archivemanuals/chrysler/p series 318 engine parts catalog 81-690-1312.pdf great reference when looking for a part.

Reading a Larry Shepard article about Mopar valvetrains: he mentions that the hydro rocker shaft is NOT round, and the mechanical shafts are ground round. Ever hear of this? "...The hydraulic rocker shaft is generally not used with the mechanical rockers. Either the T/A or the W2 shaft can be...

I was 3 for 3 in removing whole exhaust studs from 2 LA heads dated 1963! '64 heads...one was already removed so maybe I was 4 for 4! Slow and lubed using a new 16" pipe wrench with nice and sharp jaws. Now I'm gonna have to buy a $2 scratcher today......Ever have something really go your way on...

What the diff when porting? 308 has porting template but it says it wont work on any other head besides the 3 MP heads and the 308. I know the AIR ports are cast but....? Would templates get you close with obvious to see obstacles of 1976 era head?

Had this 340 turned mains 360 crank forever after Fedex damaged it in shipping. Didnt want to toss it so Im doing a derust session on it. I realized the chip in the flange is not as bad as I remembered it being, its just a corner chip between a bolt hole and the void. If I were to actually put a...

Fun fact: Slanty valvetrain spacers work, and are actually a better fit than 273 mechanical rocker spacers. I was missing one and I found a slanty and put it on. Slop gone (down to a feeler guage instead of a Q-tip!). They are just 'cheaper'...not a tool steel sounding solid ring but more of a...

Did the 273 or 340 forged cranks have undercut fillets? I know cast cranks have this feature and the aftermarket forged units don't as it is a 'potential stress riser'. Seems if so, it would be a simple way to ID a stock forged crank at a swap meet for the untrained eye.

I have a set of ARP's in a set of rods but they are floaters and I need press fit. I want to pull the ARP's and use them in my rods but dont know the best method for removing the bolts. I gave them the old tap with a hammer, no dice. I put a nut on them and tapped it a little harder, not a...

Were having a discussion on the merits of the 273-4 engine compared to the 318-2 of the following years, sometimes even the same year. Sure the 273-4 was a hot motor back in 65 when it was the best thing between the fenders of the early A's but you just can't deny that a 20% larger motor is...

Trying to figure out how to do the water crossover and thermostat.

can you buy just the roller and replace? I got 2 hemi full body solid rollers that have scars on the rollers only (link bar gave up and both turned) . Seems a shame to scrap 'em as they are the solid body style, I think they are old Crowers.

I wanna make a sheet metal intake for the turbo 273 but I dont want the same add-a-bung top feed single plane intake (its a 63 cast block with the odd bolt angles anyway) so off to the metal store! $16 later I got a 24X24 sheet of 3/16 plate (thin I know but Itll cut like buttah) and 4 10" 1X2...

Does anyone make the V shaped Mopar LA adapted roller lifter tie bars? I cant find them anywhere sold sperately. would need to be open ended or I could cut them...link?

The threaded nipple MP 53007563AB that the oil filter plate attaches with, is that a special thread (maybe 3/4-16 or 20?) or 2 different threads or can I make one with a close nipple and a lock nut? Also, is there a difference between the magnum plates and the LA plates? Some guy got a plate...

Saw this and was wondering if its that easy. Drill and tap both small ports and plug the large inlet? Is the lower pipe plugged port a direct feed to the larger oil filter port?

Did 90 adapter take the same filter as an off the block app, like maybe a truck? Can anyone tell me what the gasket OD is for an off the block filter?

Hamburger adjustable timing set that uses a silent chain! Man that is High Performance....

Melling M72K (rebuild kit) is a buck less than the entire new M72 pump! Who rebuilds these things? And what does a bad pumps rotors look like, just worn gaps or grooves from injested crap?> I took my barnyard find 273's oil pump apart and saw some pretty good scoring on the tips of the 4 lobe...

OK, non Mopar related but perhaps its general knowledge. Should my 82 Mazda EGR valve be the slightest bit open during idle? It idles at ~650, uses ported vacuum for the distributor so its at 8 BTDC with no vacuum on advance pot at idle. Im getting a rough idle and found that the EGR is raising...

I used to have a cool chrome plated one, then I found another one but it was peeling badly. Why can't I seem to be able to polish this cast AL one I have? Its completely stripped of paint, smooth as glass but it just wont take a shine. Ive use 1000 grit sandpaper, a buffing wheel...

anyone got a line on some STD (3.625") 273 rings? Rockauto, ebay, your stash? I might as well rering this while I got it out although the bores are fine, no ridge and the old rings are still in "one piece" Never ran the motor since I aquired it so the old ones may be good still but they have...