302 year differences............?

Post by **Greg D** » November 17, 2007, 7:56 pm

I just hate CRS, lol. I used to be able to answer these questions for other people but now it's all mixed up in my head.
I ended up not getting a roller 302. I helped a friend of mine out today, rented him a tow dolly and dragged his broken 93 Stang to my house so I can fix it for him. He wants to even it up with me and has a mid 70s 302 with an Edelbrock Performer 289 intake. It's a good solid shortblock that is tight with no scoring on the cylinder walls so I figure a cam & timing chain upgrade and a new set of gaskets and it should be pretty good. Now for the "issue"; 302s had some changes in 82, firing order etc. I will need to find a flywheel.
I have also found my M5OD tranny from a wrecked 92 F150 with a 300-6 in a pull-ur-own yard. Anybody out there know if I am going to run into a problem with a flywheel/pressure plate combination? Gonna have to use some of the later parts so I can swap the hydraulic clutch into the 62.

MadMaxetc · Post by **MadMaxetc** » November 17, 2007, 8:03 pm

You should be golden. Use the clutch for a 302 and that should be it.

Like you said...most of the stuff happened in the 80's. Even then it was mostly internal.

racerx1699 · Post by **racerx1699** » November 18, 2007, 9:43 am

As for the firering order, there are two different orders. You can use eather of them as long as you use the firering order for the cam you get. I'm building a 69 302 and putting a newer hydr. roller cam in it.

Post by **Greg D** » November 18, 2007, 12:13 pm

Thanks, I remember the firing order part though. I couldn't remember if the flywheel imbalance was the same or not for the most part. Roller cam in an older block? Any machine work required?

Post by **Greg D** » November 18, 2007, 12:18 pm

Never mind, found it. Drill & tap 2 holes basically.

Johnny Canuck · Post by **Johnny Canuck** » November 18, 2007, 8:40 pm

The 70's 302 is gonna be 28 oz balance weights Greg.Later ones, I believe the roller cammed engines, are 50 oz.

Post by **Greg D** » November 19, 2007, 8:48 pm

Thanks JC, that was what I was trying to remember. All 351 Windsors are a 28 oz imbalance though. I was wondering about finding the right flywheel, the engine is from a car with an auto trans. I figured a 70s era flywheel would be a little tough to come by, 351 Windsors should be fairly plentiful though. Now I just need that pair of early 351 heads with the big valves, lol.

Johnny Canuck · Post by **Johnny Canuck** » November 19, 2007, 9:47 pm

289 hi po heads are prolly what you are looking for greg
Aluminum heads are so much better now tho.
you can use a 289/302-28 balance flywheel or a 351w one yes.
watch the truck flywheels they are bigger with more teeth might require a bigger bell housing not sure.

BigTim · Post by **BigTim** » November 20, 2007, 7:26 am

Greg D wrote:Thanks JC, that was what I was trying to remember. All 351 Windsors are a 28 oz imbalance though. I was wondering about finding the right flywheel, the engine is from a car with an auto trans. I figured a 70s era flywheel would be a little tough to come by, 351 Windsors should be fairly plentiful though. Now I just need that pair of early 351 heads with the big valves, lol.

I have a buddy who would sell a set of J302 Aluminum heads. I don't know anything about them other than they are aluminum.

Post by **Greg D** » November 22, 2007, 8:29 pm

Good street heads in stock form, can be ported to produce some pretty serious flow, special headers required though, (square rather than rectangular port). There are probably out of my budget range. You could find out what he wants for them anyway, other small blocks live here, lol.