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302 Engine With A 351 Crankshaft

  • Thread starter Thread starter Reynaldo rivera
  • Start date Start date Mar 15, 2014

Reynaldo rivera

Member
Jan 24, 2014
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puerto rico
Mar 15, 2014
#1
  • Mar 15, 2014
  • #1
hi ! i got a dumb question but please give me a wise answer..:stick2:
what i got if i put a 351 crankshaft inna 302 engine?
 

mikestang63

SN Certified Technician
Aug 27, 2012
11,606
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In the garage
Mar 15, 2014
#2
  • Mar 15, 2014
  • #2
won't work. The mains are 1/2 inch thicker on the 351 crank.
 
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Reynaldo rivera

Member
Jan 24, 2014
29
5
14
puerto rico
Mar 16, 2014
#3
  • Mar 16, 2014
  • #3
ok but if possible use a 302 block and put in the crankshaft, pistons, connecting rods and heads of a 351 engine? yes or no?
 

Kumm3

Founding Member
Jul 30, 2002
527
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East Hartford, CT
Mar 16, 2014
#4
  • Mar 16, 2014
  • #4
No
 

rbohm

Founding Member
Apr 12, 2002
6,698
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tucson,az
Mar 16, 2014
#5
  • Mar 16, 2014
  • #5
jack rousch built a similar engine in 1979 for the mustang pace car. he started with a boss 302 block, and modified a 351c crank to fit the 302 mains. he used custom length rods and pistons to complete the rotating assembly. in the end the engine came out to be 363ci as he bored the cylinder .060 over. so to answer your question, can it be done, yes. but it will take a lot of machine work, and a lot of custom parts, and would be more expensive, and wouldnt make enough more power than a much more common 347 stroker kit to worth the money.
 
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Reynaldo rivera

Member
Jan 24, 2014
29
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puerto rico
Mar 16, 2014
#6
  • Mar 16, 2014
  • #6
thanks!
 

Reynaldo rivera

Member
Jan 24, 2014
29
5
14
puerto rico
Mar 16, 2014
#7
  • Mar 16, 2014
  • #7
 

mikestang63

SN Certified Technician
Aug 27, 2012
11,606
8,859
214
In the garage
Mar 16, 2014
#8
  • Mar 16, 2014
  • #8
Here's my question to you.

WHY?

After the thousands in maching costs to make everything fit, why not start with a 351 block, or the common 331 or 347 based 302?
 
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89llx

5 Year Member
Aug 31, 2009
302
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Mar 18, 2014
#9
  • Mar 18, 2014
  • #9
just use the whole 351
 
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