Rod bolts with h beams

Looking at h beam rods for my new engine, 557 8-850 hp factory block, looking at the scats, will the 8740 bolts be ok or do I need the 2000 bolts

Steve-oh wrote:Looking at h beam rods for my new engine, 557 8-850 hp factory block, looking at the scats, will the 8740 bolts be ok or do I need the 2000 bolts

8740 are usually fine unless the engine will see high RPM often or abuse.

7k ok?

Steve-oh wrote:7k ok?

7K with a 4 1/2 inch stroke is not an everyday stroker engine. You better decide on more than rod bolts.

Arp 2000, consider a callies compstar, same price range but the big end is stronger and come with arp 2000s..

Both are offshore origin. 8740 bolts have less "cycle life" and should be replaced any time the engine is torn down. ARP 2000 bolts can take several re torques. Checking with a stretch gauge will show you when the bolt is stretching too much while trying to get the proper torque and tell you it is failing.

Got the eagle h beams with the l19 bolts

Steve-oh wrote:Got the eagle h beams with the l19 bolts

Don't forget to wear your gloves when handling them.

Lol, over the 19 for sure!

Look at using a Molnar rod.

Mark O'Neal wrote:Look at using a Molnar rod.

Yep, Molnar has a proper on center Ford rod.

They are std. with 2000 arp bolts.

+1 on Molnar. They are a little higher priced , but the center to center , big and small end sizing , and weights are spot on . Mine are ten years old and still doing the job. They are often lighter and certainly an improved design over other H beams out there.

I have been running Molnar rods for several seasons with a 4.5" crank, spinning it 7200 regularly. Holding up great. and yes, they have the arp2000 bolts. When I was having tachometer issues I accidentally ran it up to much more than 7200.