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258 con rod numbers (707 vs 352)
Posted: January 5th, 2009, 5:50 pm
by 03GC
Does anyone know why the 707 rods are better than the 352? I picked up a set of 352s and then did some checking on numbers after(bass-ackward just like usual. This is why my projects cost twice what they should ).
I plan on putting ARP bolts in and re-sizing big end.
I am not building a race engine , but if the 707s are really better, I'll sell these and find a set.
Thanks for any info
Paul
Re: 258 con rod numbers (707 vs 352)
Posted: January 5th, 2009, 6:01 pm
by dwg86
No idea why people say the 707's are better. I got a set of 352's that I polished and shot peened. I don't see a problem with running them. If you sell your 352's let me know.
Re: 258 con rod numbers (707 vs 352)
Posted: January 5th, 2009, 11:13 pm
by IH 392
707's are more common, I don't think that I've ever even seen a set of 352's?, just like the 12 CW cranks are more common, I think I've seen two that didn't have full counter weights???
Re: 258 con rod numbers (707 vs 352)
Posted: January 6th, 2009, 5:48 am
by Cheromaniac
The 707's are reputedly stronger but the 352's look exactly the same and weigh the same so I see no reason why you shouldn't use them. You can even mix the two (I have four 707's and two 352's in my 52k mile old stroker). I definitely recommend new ARP rod bolts and it would be a good idea to polish the rod beams, resize the big ends, make sure they're weight-matched, and have them shot peened.