331 vs 347 must choose for new build HELP!

[Foxfan4life]

Ok I had aggravated a few by advertising in wrong places(sorry!) BUT my 92 LX sold tonight local and I am overjoyed!!. This week I bought a set of DOOE 70 351W heads already punched to 2.02x1.6 with triple spring and guide plates and hardened seats of course! I found out FAST the stock 90 GT pistons aint gonna fly so by welling the LX I have the cash for a decent engine. I have been researching a little (mostly Muscle Mustangs Mag's) and it is a tough decision between the two. I hear 347 have oil consumption probs and from what I gather a 331 is a true revver and pretty strong and close comparrison to 347. I really dont know who is right. I have always went 302-306 nothing to wild. Other thing to base decision on is I have a GT40 intake port matched to the 70mm BBK thr. body, a C&L 76mm mass air k&N directly on it calibrated for the 30lbs Ford Racing inj. with an adj. fuel reg a 190lph fuel pump full lenght headers offroad exhaust flowmaster 2 1/2 4:10 gears u/d pulleys and a crane HI-6 ignition box. I also plan on a JET chip ASAP and the car is braced with all but a cage. I was shamed for the 30lbs setup when it was to be a 302 but I HOPE the extra cubes will make this stuff NECESSARY!! Well for my first week no one has cussed me too bad I feel at home here guys and could use some hardcore advice trying to build a family/drag pony. Well fellas which would be most bang for buck and be best daily driver and family hauler? Also if you know of a reputable place to score a good solid foundation(forged pistons a must) let me know as I am on a budget even still. Thanks guys ADAM Email: [email protected]

 

[keith black]

"347" buy good pistons they fixed the oil problems with a support ring on the bottom of the oil ring on my JE pistons, a 331 is just a tease at the torque you can get outta stroking a motor. I love mine when it blows up i'm building another one.

 

[BatFink]

Why is 347 more prone to Oil Consumption?

 

[Modular2v]

Why is 347 more prone to Oil Consumption?

because of the way the rod angle forces the piston against the cylinder walls. . . this is in theory though. I just saw that the thread starter is going to put D0 heads on this set up, my 69 windsor heads are punched out very similarly. . . pm me and i can give you some tips on getting those heads to on that motor to run mid-low 12s

 

[Woodrow]

Why is 347 more prone to Oil Consumption?

They arent any problems anymore.

 

[bubba-dough]

Go 347....As long as its a good kit and the builder is good there will be no oil problems. Now I still see some junk cheap ass kits that still use the old way of the wrist pin intersecting the oil control ring. So make sure to get a good kit. I have a daily driven 347 with about a year and 9,000 miles on it and not one oil problem.

 

[88Stang331]

Go 347....As long as its a good kit and the builder is good there will be no oil problems. Now I still see some junk cheap ass kits that still use the old way of the wrist pin intersecting the oil control ring. So make sure to get a good kit. I have a daily driven 347 with about a year and 9,000 miles on it and not one oil problem.

Basically all it comes down to is do you want a 331 or a 347.

 

[Mavrick]

347

 

[trvl_girl]

I have a 347 for sale

I have a brand new, custom built 347 stroker for sale.

 

[fivespeedsteed]

I have a brand new, custom built 347 stroker for sale.

i bet it costs more than his car.