First off I want to thank grannys442 for posting this very helpful information.

https://classicoldsmobile.com/forums...73503d-154892/



The Eagle Rod and most likely all of the entry level offshore rods will have the same issue. The big end is to large for the small bore.
Is removing material from the side of the rod a viable option?
It would weaken the rod but would it weaken the rod to the point of failure given the 400 G HP/TQ limitations.

 

Speedmaster H beams will fit, approx 3.865 across the big end.

 

Thanks Mark for the reply.
Where do Speedmaster H beams rank on the quality scale?

https://www.speedmaster79.com/H-Beam...le-400-425-455

 

Good quality overall but sizing not so good on the big end.

 

Thanks Mark for the reply.

 

Its hit and miss with speedmaster quality. got a set here that 3 of the rods are poorly machined on the beams. really rough and a lot different thickness variation side to side. one side is .075' thick while other is.125" and i dont know the real quality of the bolts.. no name and a real rough head on it.

still better than using a stock rod though.

 

Thanks for the reply its good to know what to expect from a speedmaster rod.

 

Yes lately they’re not so good, consequently I’ve quit using them.
Big end widths ranged from .925-.937. Way too much variance. I sent them back.

 

Mark have you had a chance to measure the big end of the Scat rod for cross sectional width?

 

I did but forgot what it was. I’ll try to grab a set and do it again.