Modded Mustang Forums banner

1 - 20 of 20 Posts

·
Registered
Joined
·
4,424 Posts
Discussion Starter · #1 ·
Is a 351w piston the same as a 302? Is the centerline of the wrist pin the same distance from the top ring land. I have a 351 block, and I have fly cut stock 5.0 pistons, I also have no money left(reason for question), can I use the 5.0 pistons in the 351, with the stock length connecting rods and crank?
 

·
Registered
Joined
·
4,424 Posts
Discussion Starter · #3 ·
would you happen to know the diffrence in the distance?
 

·
Registered
Joined
·
559 Posts
1.600
1.772

these are the most common aftermarket heights, just look at it. The 351 has a deck height of 9.5 vs 8.2 and the rod is 5.956 vs 5.090
 

·
Registered
Joined
·
2,111 Posts
Thats good info to know right there. I never knew the actual compression height of 302 pistons. Nice to have a comparison with 351 slugs.
 

·
Registered
Joined
·
4,781 Posts
Rod length + (1/2 stroke) + piston comp height = block deck height

for a 302
5.090+ (1/2*3) + x = 8.2; x = 1.61 comp height for zero deck

for a 351
5.955 + (1/2*3.5) + x = 9.5 ; x = 1.795 com height for zero deck

usually you want a little under zero deck to allow for rebuild clean up of the deck.

So yeah you can use them, but you'll have a compression ratio of like 3:1.
 

·
Premium Member
Joined
·
11,367 Posts
A 302 piston is a 393 stroker piston but other than that Woody and Ryan covered the rest.
 

·
Registered
Joined
·
698 Posts
The up side is you have the pistons and rods for a 393, just need the crank (and balanced , don't forget balanced) :cool:
 

·
Registered
Joined
·
4,781 Posts
The up side is you have the pistons and rods for a 393, just need the crank (and balanced , don't forget balanced) :cool:
I think a 393 uses like a 6.1" rod.
 

·
Registered
Joined
·
4,781 Posts
THere is a cheap 377 stroker that consists of 302 pistons, chevy rods (I think), and an offset ground 351 with the rod journals cut down to chevy size...
 

·
Registered
Joined
·
4,781 Posts
stock 5.956 windsor rod, 1.600 302 piston and a 200 dollar cast crank
I stand corrected. Is this a decent set up...seems like a lot of stroke for that rod.

Is anyone making forged 302B pistons?
 

·
Registered
Joined
·
559 Posts
The 393 is as old as the hills, the number one downside for me personally is balancing them, they can be an absolute wallet drainer depending on the parts used.
 

·
Registered
Joined
·
4,424 Posts
Discussion Starter · #18 ·
The 393 is as old as the hills, the number one downside for me personally is balancing them, they can be an absolute wallet drainer depending on the parts used.
excuse me, your raining on my parade:D
 

·
Registered
Joined
·
4,781 Posts
The 393 is as old as the hills, the number one downside for me personally is balancing them, they can be an absolute wallet drainer depending on the parts used.
Wallet drainer? With a stock rod and stock pistons and $200 crank?

you lost me?
 
1 - 20 of 20 Posts
Top