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Joined: December 13th, 2005, 6:39 am

March 9th, 2012, 8:12 pm #1

I was wondering about putting a 6" rod in my 351c engine with the stock crank. Is it just that easy, just put it in? Or do i need a different set of pistons? Any clearance issues to know of? Doesn't this give the engine more TQ and help with the rod/stroke ratio. Thanks again for all your help, Matt
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Joined: February 13th, 2006, 4:59 am

March 9th, 2012, 8:53 pm #2

Matt look in engine build section there is quite a few combos in there in the500 plus hp range
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Joined: December 16th, 2003, 1:59 am

March 10th, 2012, 2:28 pm #3

Horse Hockey

SBC & small port related at best
possibly deliberate misdirection by Smokey Yunick?

Jon Kaase doesn't use the longest rod possible in a quest for best torque, actually rather on the sort side. the longer the rod is the less 'pull' it creates on the intake port, which is obviously the Clevelands' strong suit

http://www.network54.com/Forum/119419/t ... +6-200+rod

http://www.network54.com/Forum/119419/t ... y+long+rod

http://www.network54.com/Forum/119419/t ... block-----



there'll be phantoms, there'll be fires on the road... and the white man dancing
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Joined: December 17th, 2003, 4:14 pm

March 10th, 2012, 10:36 pm #4

I was wondering about putting a 6" rod in my 351c engine with the stock crank. Is it just that easy, just put it in? Or do i need a different set of pistons? Any clearance issues to know of? Doesn't this give the engine more TQ and help with the rod/stroke ratio. Thanks again for all your help, Matt
and they use them because ther're tripping over them, the shorter 351 rod is harder to find. So just as the toilet water goes down the drain the other way, it's quite opposite over here.
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Joined: July 12th, 2008, 1:55 pm

March 10th, 2012, 11:37 pm #5

Re: It's common down under to use longer 302c rods
Last edited by gs351 on September 6th, 2013, 8:15 am, edited 1 time in total.
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Joined: February 13th, 2006, 4:59 am

March 11th, 2012, 1:02 am #6

I guess the theory behind the shorter rod ( like Jon Kaase says) is that the piston speed increase after tdc pulls more air in. However I'm not sure I beleive all this rod theories as if it were so the 6.60 rodded and 3.85 stroke of the 460 would not work and there are a ton of those engines making big power. Changing stroke and rod length without the added bore and camswap like George says gains nothing. However add stroke and bore and cam and you will see gains. Look at the 408 's in the build section and you will see good power and tq at lower rpms.
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Joined: May 10th, 2008, 1:04 pm

March 11th, 2012, 2:29 am #7

Horse Hockey

SBC & small port related at best
possibly deliberate misdirection by Smokey Yunick?

Jon Kaase doesn't use the longest rod possible in a quest for best torque, actually rather on the sort side. the longer the rod is the less 'pull' it creates on the intake port, which is obviously the Clevelands' strong suit

http://www.network54.com/Forum/119419/t ... +6-200+rod

http://www.network54.com/Forum/119419/t ... y+long+rod

http://www.network54.com/Forum/119419/t ... block-----



there'll be phantoms, there'll be fires on the road... and the white man dancing
I don't know how you remember all the old posts but they are great and I'm glad you do. Also I miss Kid V , I wish he would come back! Thanks again. Greg
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Joined: December 17th, 2003, 4:14 pm

March 11th, 2012, 3:18 am #8

Re: It's common down under to use longer 302c rods
Hypereuretic from what I've read, but if you want forged ots, I guess that would be for the 5.78 rod, correct?
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Joined: December 20th, 2003, 1:52 pm

March 11th, 2012, 3:34 am #9

Horse Hockey

SBC & small port related at best
possibly deliberate misdirection by Smokey Yunick?

Jon Kaase doesn't use the longest rod possible in a quest for best torque, actually rather on the sort side. the longer the rod is the less 'pull' it creates on the intake port, which is obviously the Clevelands' strong suit

http://www.network54.com/Forum/119419/t ... +6-200+rod

http://www.network54.com/Forum/119419/t ... y+long+rod

http://www.network54.com/Forum/119419/t ... block-----



there'll be phantoms, there'll be fires on the road... and the white man dancing
I have 6.125 rods on my 383 A3 stroker, runs 149.47 in the quarter in 2500 lbs car, areb you saying if I ran a 6.00 rod I would be 150+?
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Joined: June 14th, 2006, 2:29 am

March 11th, 2012, 4:09 am #10

I was wondering about putting a 6" rod in my 351c engine with the stock crank. Is it just that easy, just put it in? Or do i need a different set of pistons? Any clearance issues to know of? Doesn't this give the engine more TQ and help with the rod/stroke ratio. Thanks again for all your help, Matt
of forged pistons on the shelf.
.912" pin size I think.
I can check Monday.
Last edited by TMeyerInc on March 11th, 2012, 4:09 am, edited 1 time in total.
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