302 rebuild

[94STXRanger]

So This is a 1980-1982 Block then? How do they differ from 83 and up blocks? SHould i buy gaskets for the before 12/82 blocks then, not for after 12/82?

 

[baddad457]

The 83 up blocks got the one piece rear main seal. Otherwise, they're the same block. The 85 roller block is similar in metal content, but the added two lbs iron went into the taller lifter bores. The 86-up blocks got another 4 lbs added in the deck and bottom of the bore cavities to strengthen the bores.

 

[94STXRanger]

Alright well Now i have a block with EOAE, apperantly telling me its an 80 block, but it has a one piece rear main seal.

 

[94STXRanger]

Anyway both the heads and block are at shops. The heads went to a specialist on monday, which should be done this week hopefully. I just took the block, crank, mains, rods, and pistons to an engine shop today. The are going to tank and magna-flux the block, clean everything real good, replace all freeze plugs, cam bearings, main bearings and rod bearings. They are also gonna mic the crank and polish it, and hone the cylinders. Overall the guy said it looked to still be in good condition.
So hopefully by the end of next week or beggining of the next it should be done and ready to rebuild.

 

[94STXRanger]

Alright so i just want to check something. ON a 302, 80s block if it matters, will the spark plug holes be angled forward, toward the front of the engine? Just want to verify the head orientation so i dont get them swapped or something. Thanks guys

 

[baddad457]

The heads are interchangable. The only point that prevents them from using either side is the Thermactor air injection passage, this runs from end to end just above the exhaust ports, with one end open that goes toward the rear, this passage can be plugged if not used, the holes on either end are threaded. The front hole has a threaded bushing that's used with the 7/16" accessory bolts, this bushing plugs that end. Swap the bushing and you can use either head on either cylinder bank.

 

[red85]

I plugged the thermactor passages with a couple of old spark plugs with porcelain snapped off. No leaks no worries no problems. Oh, and for the record, .060" over is a loooooong way out for a stock 5.0L block regardless of casting #.

 

[94STXRanger]

Alrighty thank you guys for the help. Im assuming those passages are for egr or something?

 

[baddad457]

Not EGR, this is for the Thermactor Air Injection system. The smog pump is plumbed to the passages. If you're going to keep it plumbed for emissions inspections, the crossover tube for the E series vans works better for this in a Ranger. The connection point is in the middle, to the rear of the intake. The car crossover wraps around the right valve cover and interferes with the heater-A/C box.

 

[94STXRanger]

This will be going into a 1965 mustang, so i assume i wont need it on that year, correct?

 

[baddad457]

Not likely unless you're in Kalifornia.

 

[rickcdewitt]

Not likely unless you're in Kalifornia.

not then either

 

[94STXRanger]

Well good then. Ok so this distributor is from the 80s style mustang, so i will need to get an ignition box and new coil right? And how does the speedometer tie into this? On a 65 does anyone know how it hooked up and what to?
Thanks guys

 

[baddad457]

Speedo doesn't tie in with the ignition. Not even with the 80's EFI systems. The distributor will have to be a Duraspark and not the 86-up TFI distributor used with the SEFI fuel injection.

 

[94STXRanger]

even thought this isnt fuel injected?