3.562 Crankshaft?

Sprint39 · 8/7/10, 12:33 PM

I am putting together a new motor with a 3.562 stroke. I have never been a motor guy before so I dont know what Rods and Pistons to use. I cant find any information about this does anyone one know if I can use standard 5.7 rods and pistons?

dant · 8/7/10, 2:12 PM

never heard of a 3.562 crank,sure you didn't mean 3.625 ...maybe I've just been out of the loop...anyway the piston pin location will depend on the stroke -rod length-deck height ...I'd call a piston manufacturer [say Ross] and talk to them ..anyone got the real answer ..post it ..I like to keep updated

gdude · 8/7/10, 4:31 PM

You will probably need 6" rods and pistons with a corresponding pin height. 5.7 might not clear the counterweights.

Sprint39 · 8/7/10, 4:40 PM

But thats where I have the problem. When I look for pistons I can't find what the pin height is on the piston.

gdude · 8/7/10, 9:55 PM

You should be able to go to the JE website and look up your combo. You're actually looking for the compression height (pin height).

---------- Post added at 08:58 PM ---------- Previous post was at 08:55 PM ----------

http://www.jepistons.com/Catalogs/Au...-400_dome.aspx

#182009
#182010

Bad Dad 54 · 8/7/10, 10:23 PM

http://www.wallaceracing.com/Calculators.htm Try this site they got all kinds of math formulas here.

:2:

Tim · 8/8/10, 9:47 AM

Quote:

Originally Posted by Bad Dad 54

http://www.wallaceracing.com/Calculators.htm Try this site they got all kinds of math formulas here.

:2:

I was thinking that JE uses the same piston for 3-9/16" (3.5625) stroke as they do for 3.550" stroke.

I've been thinking about building a similar engine, but probably going with the 5.850" rods. Seems to be the best of both worlds between the 5.7 and 6.0 rods.

Tim Simmons

motorhead748 · 8/9/10, 6:19 AM

My first sprint engines in the early 80`s had a 3 9/16 stroke. Not sure of how your crank ended up with this stroke but on mine I would get a run of the mill 350 steel crank (3.48 stroke) with large journal (2.100) and have it offset ground to small journal (2.00) with 3.562 stroke. I would use the stock small journal rods with 11/32 rod bolts and ross pistons in a 400 block.
The cranks would only last 25-30 races before they were cracked so I would keep a fresh one in stock. I ran this combo for 4-5 years with a wing and only ever had one rod failure. $1000 short blocks, those were the days!

8/7/10, 12:33 PM	#1 3.562 Crankshaft?
Sprint39 Member Join Date: Jul 2008 Posts: 40	I am putting together a new motor with a 3.562 stroke. I have never been a motor guy before so I dont know what Rods and Pistons to use. I cant find any information about this does anyone one know if I can use standard 5.7 rods and pistons?

8/7/10, 2:12 PM	#2 Re: 3.562 Crankshaft?
dant Member Join Date: Apr 2008 Posts: 191	never heard of a 3.562 crank,sure you didn't mean 3.625 ...maybe I've just been out of the loop...anyway the piston pin location will depend on the stroke -rod length-deck height ...I'd call a piston manufacturer [say Ross] and talk to them ..anyone got the real answer ..post it ..I like to keep updated

8/7/10, 4:31 PM	#3 Re: 3.562 Crankshaft?
gdude Member Join Date: Aug 2010 Posts: 5	You will probably need 6" rods and pistons with a corresponding pin height. 5.7 might not clear the counterweights.

8/7/10, 4:40 PM	#4 Re: 3.562 Crankshaft?
Sprint39 Member Join Date: Jul 2008 Posts: 40	But thats where I have the problem. When I look for pistons I can't find what the pin height is on the piston.

8/7/10, 9:55 PM	#5 Re: 3.562 Crankshaft?
gdude Member Join Date: Aug 2010 Posts: 5	You should be able to go to the JE website and look up your combo. You're actually looking for the compression height (pin height). ---------- Post added at 08:58 PM ---------- Previous post was at 08:55 PM ---------- http://www.jepistons.com/Catalogs/Au...-400_dome.aspx #182009 #182010

8/7/10, 10:23 PM	#6 Re: 3.562 Crankshaft?
Bad Dad 54 Senior Member Join Date: Mar 2009 Posts: 717	http://www.wallaceracing.com/Calculators.htm Try this site they got all kinds of math formulas here. :2:

8/9/10, 6:19 AM	#8 Re: 3.562 Crankshaft?
motorhead748 Senior Member Join Date: Dec 2007 Posts: 1,988	My first sprint engines in the early 80`s had a 3 9/16 stroke. Not sure of how your crank ended up with this stroke but on mine I would get a run of the mill 350 steel crank (3.48 stroke) with large journal (2.100) and have it offset ground to small journal (2.00) with 3.562 stroke. I would use the stock small journal rods with 11/32 rod bolts and ross pistons in a 400 block. The cranks would only last 25-30 races before they were cracked so I would keep a fresh one in stock. I ran this combo for 4-5 years with a wing and only ever had one rod failure. $1000 short blocks, those were the days!