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 > _________________________________________________________________ > Stay up to date on your PC, the Web, and your mobile phone with Windows Live > http://clk.atdmt.com/MRT/go/119462413/direct/01/ > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://splatter.wps.com/pipermail/amc-list/attachments/20081110/6ca03b85/attachm > ent.htm > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list