Re: [Amc-list] 258/4.0 rod bolts
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Re: [Amc-list] 258/4.0 rod bolts



I see no one responded to this, so I'll poke it with a stick and see if it wiggles away or sumpin.

Can't the shop compare the bolts? If your building in a 258 block, do you have the rods? you can just compare.
IIRC they are the same.

I could compare but the only 4.0L rods I have are living in a shortblock still.
I have 258 rods out, but don't really want to disturb the bolts as they are in perfect condition and do not need resized.

Why build on a 258 Block?
Bigger is better :]  use the 4.0L block, you have the 258 crank, at standard bore your at 275 Cu.In.

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
" I realize that death is inevitable.
I just don't want to be around when it happens! "

 -------------- Original message ----------------------
From: M Walter <redamc1963@xxxxxxxxxxx>
> 
>   I am building a mild performance 258, but I am using 4.0 rods.  My machine 
> shop said that if I don't plan to use it over 4500 rpm, I can just stick with 
> the origional ones. And that's great, but it will be at 9.0 to 9.5 compression. 
> So, in the back of my head I'm wondering if it's worth it to get some ARP bolts 
> for peace of mind. However, I've been looking hard and can't find any 4.0 rod 
> bolts. Lots of 258 bolts, but no 4.0 ones. Are the 4.0 and the 258 bolts the 
> same? And if not, then where can I get some 4.0 rod bolts?   THANK YOU,  Matthew 
> Walter
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