302 rebuild
11-07-2006, 02:31 AM
#11
5th Gear Member
Join Date: Jun 2006
Location:
Posts: 4,089
RE: 302 rebuild
They've fixed that problem on the 347. The short pistons, however, are more likely to rock in the bore causing noisy startups....and nosie=more wear.
ORIGINAL: 68SCode4speed
The bottom ring intersects the piston pin on the 347 kit from what I have heard it doesn't have as long as a life as the 331. Definately go with the 331 kit as it will give you many more years of service... at least that is what I am going to do...
The bottom ring intersects the piston pin on the 347 kit from what I have heard it doesn't have as long as a life as the 331. Definately go with the 331 kit as it will give you many more years of service... at least that is what I am going to do...
11-07-2006, 02:34 AM
#12
Join Date: Sep 2005
Posts: 45
RE: 302 rebuild
i spent just under 500 on my block, which consisted of boring and honing, 3 new rods, polish crank, cam bearings, main bearings, rings, a full engine gasket kit, plugs, as long as you do the assembly yourself you will save yourself some money.
11-07-2006, 10:46 PM
#13
4th Gear Member
Join Date: Mar 2006
Location: Concord, NC
Posts: 1,261
RE: 302 rebuild
ORIGINAL: 68SCode4speed
The bottom ring intersects the piston pin on the 347 kit from what I have heard it doesn't have as long as a life as the 331. Definately go with the 331 kit as it will give you many more years of service... at least that is what I am going to do...
The bottom ring intersects the piston pin on the 347 kit from what I have heard it doesn't have as long as a life as the 331. Definately go with the 331 kit as it will give you many more years of service... at least that is what I am going to do...
11-07-2006, 11:01 PM
#15
4th Gear Member
Join Date: Mar 2006
Location: Concord, NC
Posts: 1,261
RE: 302 rebuild
ORIGINAL: Colorado_Mustang
Abolutely 100% wrong
Abolutely 100% wrong
ORIGINAL: mustanglover66
The 331 uses the same rods and pistons as the 347. the only differnce is the 331 uses a stock 302 crank.
The 331 uses the same rods and pistons as the 347. the only differnce is the 331 uses a stock 302 crank.
11-07-2006, 11:19 PM
#16
5th Gear Member
Join Date: Jun 2006
Location:
Posts: 4,089
RE: 302 rebuild
A 331 does not use a 302 crank...a 306 uses a 302 crank (with a 302 crank having a 1.5" throw, for a 3" stroke...along with a 5.09" rod). A 331 has a 3.25" stroke with a 5.4" rod. A 347 has a 3.4" stroke with a 5.4" rod.
347 Piston. 331 Piston. 302 Piston.
I have a 302, 331, and a 347 (boat motor
). The only thing the same on the rotating assembly is the bearing journal sizes...
347 Piston. 331 Piston. 302 Piston.
I have a 302, 331, and a 347 (boat motor
). The only thing the same on the rotating assembly is the bearing journal sizes...
ORIGINAL: mustanglover66
Sorry to burst your bubble but I just balance one last week and that was the setup
ORIGINAL: Colorado_Mustang
Abolutely 100% wrong
Abolutely 100% wrong
ORIGINAL: mustanglover66
The 331 uses the same rods and pistons as the 347. the only differnce is the 331 uses a stock 302 crank.
The 331 uses the same rods and pistons as the 347. the only differnce is the 331 uses a stock 302 crank.
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