302>>>>347 short block

[lookout4me]

ok i read that some where in these post that you can take a 302 block and swap a 347 block into the bottom half with out changein a single thing.
how would this be done. and if so where can i find one that is cheap so i can do the swap.

 

[StaffAmerica74]

347 is a stroked and bored 302... same block different rods crank pistons... do a search

 

[mustangdave]

You reuse your block with and overvore. The crankshaft has longer throws on it. The rods and pistons are shorter to fit into the same space. This increases the stroke and therefore displacement of the engine. Kits can be bought to do this or you could opt for one already built( a shortblock).

 

[6Stang7]

ya. a 347 is just a 302 block bored out .030" and has a different crank and rods to give it a longer stroke.

 

[2bav8]

I got me one of dem there stroker thingies

Run real well too.

 

[12sec67]

the block has to have slots/cutouts in it to be able to turn the longer stroke

 

[D.Hearne]

I got me one of dem there stroker thingies

Run real well too.

Damn, 2bav8, you're not a coon-ass are you? Sure sound like one there. Got me one dem 331 strokers dere too, ya. ----------------------------And mustangdave, the rods in a 331-347 are longer, not shorter. I'f they were shorter, the pistons would hit the crank counterweights at BDC.

 

[dachillman65]

im sellin my 347

ive got a 347 im selliin if your interested. below is a lis of internals. ive got a 9 in rear and a 4 spd toploader close ratio if your interested. PM me if you want anything.

-289 block bored to 347 (5 bolt)
-stroker kit
-Eagle H-Beam Rods
-Ross Pistons 11:1 comp.
-Roush cometition heads
-Competition Cams Valve Train, with solid cams and roller rocker arms
-New Intake
-Canton 7qt. oil pan + windage tray
-March Pulleys
-1 wire powermaster
-Barry Grant Demon Carb
-MSD ingnition and coil
-MSD distributor
-New water pump
-New valve covers

4000 for engine and 500 each for 9in and 4 spd.

thanks again

 

[84convertablegt]

hey, if you get a 331 u wont have to notch it

 

[D.Hearne]

hey, if you get a 331 u wont have to notch it

Yea, you've also got to clearance the block for the rods on a 331. Did on mine.