347 question

[chronical]

This car I bought was advertised to have a 347 street fighter stroker kit in it. Of course, the guy didnt have receipts so he had to come down on his price and I paid an amount more inline with a 302. Here is a pic of a piston and I couldn't see a part number. Is there a way to determine if is or is not a 347 from here or do I need to pull the pan? Thank you

[white88]

If it's a 347 then it has been bored .030 over and should have .030 on the top of the piston, from your pic I don't see that.

[Txstang1]

measure the stroke too.

[chronical]

If it's a 347 then it has been bored .030 over and should have .030 on the top of the piston, from your pic I don't see that.

Yeah I didn't see it either. They also make a 342, same thing, just standard bore. Did 302's come with flat tops as pictured. I want to say stock pistons had 2 separate eyebrows or were they connected like this.

measure the stroke too.

I'm not sure i have the necessary tools to that. I've never measured stroke before

[dumpycapri85]

Run the piston to bottom dead center . Put a tape measure down the bore and see how far it is from the deck to the head of the piston .3" is a 302 , 3.25" is a 331 and 3.4 is a 347 . This is of coarse also based on bore but it will tell you if its stroked .

[dumpycapri85]

BTW , those are not stock pistons .

[chronical]

Run the piston to bottom dead center . Put a tape measure down the bore and see how far it is from the deck to the head of the piston .3" is a 302 , 3.25" is a 331 and 3.4 is a 347 . This is of coarse also based on bore but it will tell you if its stroked .

Ok I'll do this. Also off topic but I don't want to spam the garage with a million questions. I sold an msd digital 6 box and the car has a ton of wiring all over the place. Can I cut the wires and it still be usable to the buyer? Can they just solder on to it?

[dumpycapri85]

Yes but keep them as long as possible and don't cut anything you don't have to .

[chronical]

Yes but keep them as long as possible and don't cut anything you don't have to .

Ok I was concerned there might be special connectors at the other end of the wire that would be needed

[chronical]

do these pics help in determining the stroke?

[chronical]

I'm on pain meds so i didn't really fool with it. I just took the measurement of the furthest down piston. Does this pic help to identify that it's not a 302 at least? Thanks for the feed back.

[Blackpony]

Looks like its around 3.4 to me I'd say its a 347

[chronical]

Today I'm going to get the motor on an engine stand and open it all up to be certain. Looks like, for once, I might get lucky

[dumpycapri85]

Is this one you are selling or keeping ?

[chronical]

Is this one you are selling or keeping ?

I haven't decided. I want to keep to build but then I want to sell and help payback myself for a trailer. Ill most likely sell I think