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Im doing a similar project now. The heads i have are on a 273 and are 68cc, im using race pistons for a GM Holden that has the same bore. I will be making raised head pistons from these. The heads i have i need to have another look at the numbers but dont seem to ring a bell. However the valve...

My GM 253 4.2 is very similar also but the valves it had were already the biggest that could go in. The biggest thing that improved its performance was the porting. Core shift on casting on the heads and as well as the intake manifold meant that some of the ports had been restricted almost half...

I found the existing clearance of valve to cylinder is 0.055 After a 40 over bore and the installation of 1.88in and 1.6ex To maintain the existing clearance the valves need to be 1.86175in and 1.56ex That's .040 on the OD of the valves Really only 20th removal or 0.5 of a mm

Yea Yeah Chrysler stopped building cars here in about 1982. They also stopped selling cars here. Back in those days if you had a Valiant nearly everyone would harass and run you down. GM and Ford dudes. These days Chrysler are very much sort after. Some of that could be the beatings we would...

Than thanks for that address. I just took a photo and width of the two valves. I know the bores to head won't all perfectly line up but assuming the valves and bores are all central, the best will be an average clearance to bore. The photo where the readout is white should have been the...

Upon further thought I will leave the quench in the chambers untouched. I will be removing sharp edges and polishing the chambers, this will only make the chambers bigger but I will get the comp back with the piston. One valve has rust hoping its just a case of water got in whilst sitting...

Best to keep 40th on the quench area so zero deck 40th head gasket perfect. On my heads only a real small quench area. Considering removing it all together, create a kind of hemi chamber, push the piston up into the chamber to get the 10's. Those race pistons are 12mm thick on the face some...

Yeah your right ive been on the scat web sight. They do a 6.200 and a 6.250. For Chev. The big end are a bit wider but the BE pin is .024 smaller. I could get a push up centre of pin to top of 6.220- 6.270. I think thats a good idea. 6.238 is what i needed to get the race piston to the position...

Ive been doing a bit more number crunching. With the 3.58 crank and 6.123 rod holding the speedway racing piston. The piston will actually be 0.040th or 1mm below the deck. To gain a zero deck its just a .040 thou cut. this will give me a 9:1 comp with the 68cc heads i have, 63cc heads will give...

I have a pair of bonnet scoops off a Dart i think. Be a bit of a **** stir for ford dudes seeing 302 badges on those scoops

I was looking at the alloy heads around at the moment. They all seem to come with 2.02 intake I would be prepared to machine custom seats for the 1.8 intake. My intention is to port out as far as i can go. Remembering its a small engine ports and valves dont have to be as big as on a 360 to get...

Sorry that didnt turn out how i typed it but i think if you take the time you can make it out. The first figures on each line is LA the last is the difference maybe write it out on paper.

Because im running a stroker crank the 6.123 rods will work in my project. Even thou the Holden 253racing pistons are 2.92mm lower than the Mopar. For those not going to stroke thier motor maybe rods with around the length of 6.250 as suggested by Rumblefish360. For the racing piston to achive...

It's early days the motor has not been fully pulled down yet. My thought on the rods is I'm going to either try and order the scat rods with the smaller pin bushings or have them rebushed. The piston catalogue lists clips so I'm guessing these are for a full floating wrist pin. I will go full...

Im still looking at options, being a machinist my options are varied outside of the box so to speak. The heads have the early angled manifold bolts. I believe later 273 heads are the same as all the rest of the LA mills. I will point out for those reading. I have an Edlebrock performer manifold...

I have a 1965 Barracuda with a 273. Yes im strange im one of those guys who is going to keep this motor. However i have a real nice Scat crank. 3.58 If i use an oversize of .040 that will give me 302ci. The 273 rods are the correct length but i will probably go with scat rods for the strength...

Have a look on YouTube edelbrock have a whole series of tune up procedures on film. I bought a carb a while ago and I recieved a DVD. I just checked and the films are on YouTube.

Not sure of cryptic quiz but if it's an old Chrysler no dash lights = no stop lights usually = blown fuse or fault in the circuit. The pins do get dry joints on the circuit board but the stop light switch is powered direct from fuse and I don't know of the US cars but the feed to the dash goes...

In regards to deleting your ameter that's fine I assume you just joined the wires together. That's fine but when I have done this for myself and others I use splade connections cut off the existing lugs and plug in one of the flat blade type fuse holders with a cap. I insert a 30amp fuse with...

There is available from Bosch an electronic voltage regulator that plugs straight into the harness on older cars. The field wire is only for the charge sensing of the system. Some times the wire falls off the back of the alternator. For some reason the system does not go into a discharge even...

It's going to be a pain but what I think you have is a high resist joint. This will cause heat. Look for blackend or possible cooking of wire insulation. In my AP5 the wiring harness had a fusible link. In the wiring diagramme all it showed was a little rectangles box or just a connection of a...

Look up muscle car masters there are heaps of races Tilley often racing his VF slant six of his and usually other chargers giving a good show especially Tilley kicking V8 but with his slant For the movie watchers Look for an old Aussie movie "running on empty" it's portrayed in the early to mid...

The blue car rear and to the barracuda's right looks like a GM FC Holden about 1958 compact version of 57chev There is a few trailers Im sure I saw a dodge Charger and another car could be Chevelle but really looks like another Holden a first generation Monaro HK,HT or HG the muscle versions...

In the first original movie Max drives an Australian ford falcon XC yellow car with blue then he gets the black ford falcon XC coup. The night rider that they are chasing is an Australian GM HQ Monaro all cars are about 1975 vintage. Unfortunately in Australia the bulk of red necks were anti...

My guess it's a fuel pressure problem as the choke is creating a vacuum sucking up the fuel instead of the pump pressurising and feeding the carby. Another trick you can try. 1/ take off fuel cap 2/ disconnect rubber hose from fuel line running to carb at tank. 3/ put air gun to hose and blow...

All of these guys are right if it's the ballast resister the motor will run whilst holding the key in the start position. Then cut out when you let the key go. That's because to start you get an extra boost with full voltage to the coil. Another thing to check is the strainer in the tank blocked...