Stroker Block Questions

procharge94 · 04-18-2005, 06:28 PM

4barrel, I have a question for you. Are you planning on stroking a 302 block you currently have possession of or purchasing a block to stroke? If you are purchasing a block, my preference would be to step up to a 351 block. The 351 has larger main journals and is a stronger block all around. I'm sure I will be stepping on some toes by recommending a 351, but its worth considering if you are going to be starting from scratch. And if you really have the itch to stroke a motor, stroke the 351 to a 392, or even a 408.

andy669 · 04-18-2005, 07:13 PM

The most common 347 is a 3.4 crank with a 4.030 bore. The most common 331 is a 3.25 crank with a 4.030 bore. Most companies use a 5.400 rod, but I have seen some use a 5.315. On a normal street motor, it will make no difference.

If you want a 331, I have a 3.25 4340 forged crank for sale. Its in excellent condition.

Andy

Dark_5.0 · 04-20-2005, 04:46 PM

Quote:

Originally Posted by andy669

The most common 347 is a 3.4 crank with a 4.030 bore. The most common 331 is a 3.25 crank with a 4.030 bore. Most companies use a 5.400 rod, but I have seen some use a 5.315. On a normal street motor, it will make no difference.

If you want a 331, I have a 3.25 4340 forged crank for sale. Its in excellent condition.

Andy

How much????

04-18-2005, 06:28 PM	#1
procharge94 Registered Member Join Date: Oct 2004 Location: Gainesville, FL Posts: 103	Re: Stroker Block Questions 4barrel, I have a question for you. Are you planning on stroking a 302 block you currently have possession of or purchasing a block to stroke? If you are purchasing a block, my preference would be to step up to a 351 block. The 351 has larger main journals and is a stronger block all around. I'm sure I will be stepping on some toes by recommending a 351, but its worth considering if you are going to be starting from scratch. And if you really have the itch to stroke a motor, stroke the 351 to a 392, or even a 408.

04-18-2005, 07:13 PM	#2
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	Re: Stroker Block Questions The most common 347 is a 3.4 crank with a 4.030 bore. The most common 331 is a 3.25 crank with a 4.030 bore. Most companies use a 5.400 rod, but I have seen some use a 5.315. On a normal street motor, it will make no difference. If you want a 331, I have a 3.25 4340 forged crank for sale. Its in excellent condition. Andy __________________ 88 coupe 91 LX NMRA Pure Street 5120

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