289/302 rod bolts?

[Duane]

I have had a pack of Mr Gasket SPS rod bolts for a SBF, missing two bolts for years now. Then it hit me, would they fit 200/250? They are 5/16".

 

[Anonymous]

they will fit the crossflow 200/250. Not real sure on the US motors. For some reason I think not.

 

[Asa]

Mike, over at FSPP has the SBF rod bolts, but those are 7/16th

Product ID: ARP-200-RBK
ARP 7/16" Rod Bolt Kit (170/200/250ci)
Details

24 piece set includes SBF rod bolts and nuts (requires machining).

List Price: $66.00
Price: $55.00

http://cquesttechnologies.com/fspp/products.asp?cat=44

not sure exactly what machining is needed though
but i doubt yours would fit

 

[100_2023]

I tried pressing a set of 5/16" Milodon 302 rod bolts into a set of 170 rods and they seemed to fit fine. I kept the rods because they are the same as a 200 rod and are the earlier forged ones. I know some people use 11/32" bolts in their SBF V8's and must have the rods machined for the oversized bolts. I believe the 11/32" rod bolts are overkill in a buildup using a stock block. When I was stationed at Edwards AFB in SoCal, we used to race at LACR in Palmdale, and I saw many guys racing their stock short block Mustangs with 200 to 250 HP nitrous kits. The blocks would take it for about a year before it would crack from the main webs up to the cam bearing bores. I have seen the whole bottom ends come out of the block and the crank break in 3 pieces, but the rod bolts held on. I believe the 5/16" bolts should be fine in a 170, 200, or a 302. You shouldn't have to have any special machine work done above the standard resize and balance work when putting new 5/16" bolts in for a rebuild. I believe the 7/16" sets Mike has at FSPP are main and head stud sets. I don't believe there is enough meat in the 200 rods to even get to a 3/8" bolt, and the 11/32" would be overkill. Sorry about going off on the tangent there!
super4ord

 

[MandarinaRacing]

Just checked my records....5/16" con-rod bolts from ARP part # 154-6002

Alex

 

[Anonymous]

The 289/302 bolts fit perfectly.

That's gotta be a mistake on Mike's website.... might take a 7/16" dia. nut, but the rod bolts are 5/16".

 

[Duane]

Good, I found a use for some bolts I would have never used, since I'm missing two.....Thanks for the info!