boss 302---help me out here

R

rfv60

Junior Member
searching for replacement pistons (std) 1970 boss mustang 302 with 4.00 bore. present units all cracked on skirts. cylinder wall wear good. info as to any factory or aftermaket products would be appreciated. rod length 5.155 compression height aprox 1.6. cyl head cc58. lower compression units acceptable.
thanks. richard. 608 225 3278
rp437@mchsi.com
 
You might want to go to:www.sbftech.com and post in the wanted classifieds these hard core Ford guys would probably know where if anybody would,in the upper right hand corner watch the ad flash and click on Woody's.
 
http://cgi.ebay.com/ebaymotors/302-...r_Truck_Parts_Accessories&hash=item483afbeab6

Not sure that these are Chevy pistons.................You could always have the domes milled to get the required CR. What kind of taper do you have on the cylinders?

Have you contacted any of the piston manufactures like; Venolia, Wiseco, TRW, SRF, Ross, Probe, KB, JE, Mahl, Manley or Arias. I would think these are going to be hard to find unless you order a custom set...............IMHO
 
appreciate the responses. cyl wear is little if any: very little taper or out of round. customer has had this car since 6 months new and shows 60k on speedo. still has factory exhaust on it.
most aftermarket venders have no such animal. thats why i was trying my luck that perhaps someone else had hiked this highway and found something that would work, milled, modified or the like, i've talked to some speciality shops-----like egge and know i can have produced but customer requested a search for options.
again thanks will check out the leads.
richard
 
rfv60 said:
searching for replacement pistons (std) 1970 boss mustang 302 with 4.00 bore. present units all cracked on skirts. cylinder wall wear good. info as to any factory or aftermaket products would be appreciated. rod length 5.155 compression height aprox 1.6. cyl head cc58. lower compression units acceptable.
thanks. richard. 608 225 3278
rp437@mchsi.com
Click to expand...
One of the problems is the rod length,most 302s have 5.09 inch rods.I believe Boss 302s had 289 length rods 5.155.The other problem is the canted valve heads,even if you find flat top pistons with the 1.6 compression height they'll have to be fly cut for valve clearence.
 
thanks milt for the response, realize that. like i stated in a previous post did hope i would run past individual that had run down that road.
 
The still make replacement Flat Top pistons for the Boss 302. TRW was bought out but there are Speed Pro pistons that are the same. Sounds like your Pistons are the 69-early 70 pistons. They had a problem with the skirts. The late 70's pistons are what's out there now. I had a Boss 302 that we built for a Rail many many years ago. I am a ASE parts pro and a FORD GUY! I looked up in the Speed Pro piston cat. a few months back looking for 289/302 pistons and found the stock replacement pistons for the Boss 302 still listed. Speed Pro is part of the company that owns FelPro gaskets. Can't think of the name hope this helps. You can run the old racing popup pistons if you mill the popup off.
Dutch
 
Why not just call Ross and order exactly what you need?
They probably have them on the shelf.
 
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