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6.86" rod length in an RB wedge #2053903
04/13/16 10:12 PM
04/13/16 10:12 PM
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camdog440 Offline OP
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Has anybody used the hemi rod length in a wedge build?

I haven't found much on this other than a 4.15 stroke 494ci build in Hot Rod magazine in 1999.

Thanks!

Re: 6.86" rod length in an RB wedge [Re: camdog440] #2053935
04/13/16 10:56 PM
04/13/16 10:56 PM
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AndyF Offline
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Yeah I did a long rod 400 motor a few years back. Worked great. But the Mopar rods aren't very popular anymore, most everyone has switched over to the 2.200 rod journal since the rods are cheaper and there are more bearing choices.

Re: 6.86" rod length in an RB wedge [Re: AndyF] #2053945
04/13/16 11:04 PM
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camdog440 Offline OP
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Originally Posted By AndyF
Yeah I did a long rod 400 motor a few years back. Worked great. But the Mopar rods aren't very popular anymore, most everyone has switched over to the 2.200 rod journal since the rods are cheaper and there are more bearing choices.


I have access to a set of good hemi aluminum rods and I was looking at my options. I might also have a line on a good 4.15 stroke crank, not sure on that yet.

Re: 6.86" rod length in an RB wedge [Re: camdog440] #2054041
04/14/16 01:17 AM
04/14/16 01:17 AM
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baldwinsville new york
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a493demon Offline
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i had 6,785's in my 540

Re: 6.86" rod length in an RB wedge [Re: camdog440] #2054104
04/14/16 07:04 AM
04/14/16 07:04 AM
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If you go with the 6.86 rod, will it have a .990 pin in them? That leaves options open if you ever hurt it. If you end up with a Mopar pin size, there won't be any shelf stock parts to fix it most likely, and that means waiting for custom parts.
If this is a moderate performance build, and savings is substantial, I would go for it. Not much in savings on parts, I would opt for a BBC rod/stroker combo.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: 6.86" rod length in an RB wedge [Re: AndyF] #2054409
04/14/16 06:36 PM
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JohnRR Offline
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Originally Posted By AndyF
Yeah I did a long rod 400 motor a few years back. Worked great. But the Mopar rods aren't very popular anymore, most everyone has switched over to the 2.200 rod journal since the rods are cheaper and there are more bearing choices.


Andy wasn't that rod the 6.965 manley sportsmaster rod ?


running up my post count some more .
Re: 6.86" rod length in an RB wedge [Re: camdog440] #2054415
04/14/16 06:38 PM
04/14/16 06:38 PM
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JohnRR Offline
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Originally Posted By camdog440
Originally Posted By AndyF
Yeah I did a long rod 400 motor a few years back. Worked great. But the Mopar rods aren't very popular anymore, most everyone has switched over to the 2.200 rod journal since the rods are cheaper and there are more bearing choices.


I have access to a set of good hemi aluminum rods and I was looking at my options. I might also have a line on a good 4.15 stroke crank, not sure on that yet.


Are they USED ??? if so PASS ....

the 6.860 rod is only good if you are trying to reuse a set of low compression smogger pistons ...

Hemi rods have different pin size that stad wedge rods . what pin size are the rods ?


running up my post count some more .
Re: 6.86" rod length in an RB wedge [Re: JohnRR] #2054485
04/14/16 07:49 PM
04/14/16 07:49 PM
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fredericksburg,va
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cudaman1969 Offline
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Originally Posted By JohnRR
Originally Posted By camdog440
Originally Posted By AndyF
Yeah I did a long rod 400 motor a few years back. Worked great. But the Mopar rods aren't very popular anymore, most everyone has switched over to the 2.200 rod journal since the rods are cheaper and there are more bearing choices.


I have access to a set of good hemi aluminum rods and I was looking at my options. I might also have a line on a good 4.15 stroke crank, not sure on that yet.


Are they USED ??? if so PASS ....

the 6.860 rod is only good if you are trying to reuse a set of low compression smogger pistons ...

Hemi rods have different pin size that stad wedge rods . what pin size are the rods ?

Rods can be bored( honed)out to the size you need, BM, all, said very easy to do on aluminum, the aftermarket steel, not to easy, no meat up there. They will get the stock TRW type pistons out of the hole though. $300 vs $800 set, could save some change.

Re: 6.86" rod length in an RB wedge [Re: cudaman1969] #2054486
04/14/16 07:52 PM
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camdog440 Offline OP
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Pin size is 1.094.

They are KB aluminum rods.

Re: 6.86" rod length in an RB wedge [Re: camdog440] #2054492
04/14/16 08:02 PM
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cudaman1969 Offline
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Originally Posted By camdog440
Pin size is 1.094.

They are KB aluminum rods.

Good to go then

Re: 6.86" rod length in an RB wedge [Re: camdog440] #2054837
04/15/16 10:51 AM
04/15/16 10:51 AM
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JohnRR Offline
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Originally Posted By camdog440
Pin size is 1.094.

They are KB aluminum rods.


Hello , is this thing on ???

Are they new or used ?


running up my post count some more .
Re: 6.86" rod length in an RB wedge [Re: camdog440] #2054842
04/15/16 10:55 AM
04/15/16 10:55 AM
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yella71 Offline
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just make sure you check piston to head clearance. don't ask me how I know.


71 challenger convertable, 64 sport fury 383 ci with factory air 99 sebring convertable 89 CTD pup
Re: 6.86" rod length in an RB wedge [Re: camdog440] #2054935
04/15/16 01:57 PM
04/15/16 01:57 PM
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Franklin, TN
23T Hemmee Offline
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Not to be a downer but aluminum rods were never KB's strong point and I don't think they've made them for a while so the metallurgy is probably old school. Came upon a set in trade years ago, was planning a build around them, had one split at the bolt hole while I was torqueing it first time, checking the big end for roundness. Glad it happened before I spent a lot on parts. Check them really close.


Ronny
6.789 @ 198.63 **.956 Brand New 60'***
4.17@ 169 1/8th mile
John 14:6

https://www.youtube.com/watch?v=TUku_hjYRh8
Re: 6.86" rod length in an RB wedge [Re: JohnRR] #2055128
04/15/16 07:58 PM
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camdog440 Offline OP
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Originally Posted By JohnRR
Originally Posted By camdog440
Pin size is 1.094.

They are KB aluminum rods.


Hello , is this thing on ???

Are they new or used ?




They are new.

Re: 6.86" rod length in an RB wedge [Re: camdog440] #2055277
04/15/16 11:58 PM
04/15/16 11:58 PM
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IL
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EchoSixMike Offline
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Originally Posted By camdog440
Has anybody used the hemi rod length in a wedge build?

I haven't found much on this other than a 4.15 stroke 494ci build in Hot Rod magazine in 1999.

Thanks!


I'm using a 3.75 crank with a 6.965 rod and 1.12 CH pistons. Just because had parts laying around. S/F....Ken M

Re: 6.86" rod length in an RB wedge [Re: EchoSixMike] #2055970
04/17/16 03:38 AM
04/17/16 03:38 AM
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Franklin, TN
23T Hemmee Offline
mopar
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Thats gotta be a low-deck though, he's talking about a hi-deck.


Ronny
6.789 @ 198.63 **.956 Brand New 60'***
4.17@ 169 1/8th mile
John 14:6

https://www.youtube.com/watch?v=TUku_hjYRh8






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