A460 block

Hello to all, and Thanks for any answers/suggestions in advance.
I am having a 545 built, and i was wondering if the stock main bolts are good enough for around 850hp, or should I go ahead and replace w/ARP main studs?

A460 block
TFS A460 heads

the stock bolts are more than fine.........

i put studs in mine and use the stock outter bolts on the center 3
caps seems to work fine but eather way should work

stock bolt will handle anything you throw at it.... Studs are just a convenience.....

Fordman wrote:
I am having a 545 built, and i was wondering if the stock main bolts are good enough for around 850hp, or should I go ahead and replace w/ARP main studs?

A460 block
TFS A460 heads

I am of the opinion that the straight-shanked ARP main studs for the 460 are a step backwards from the OEM bolts that come with the A460 blocks....and in most cases even the passenger car blocks (that's what experience tells me).

But will those ARP studs be adequate for your targeted 850 hp when using the A460 block? Probably. but I'd say the factory supplIed fastener hardware is better suited for a LOT more.

Paul

The bolts that come with the FRPP A460 have been used in many 1,000+ HP engines and NOS to boot. If a guy feels like he needs something that has ARP on it , use the ARP main bolts........they are of a better design than the studs i.m.o. And the block would not have to be re-linehoned.

Perspective #2: we just subjected an A460 block with factory main bolts to more than 90% nitromethane, making thousands of horsepower, for three solid miles per pass...and did so several times. 850 hp ain't no thang.

Paul

Thanks for all of the reply's!
I am going to leave well enough alone and tell my engine builder to start putting this bad boy together!

Fordman wrote:Thanks for all of the reply's!
I am going to leave well enough alone and tell my engine builder to start putting this bad boy together!

the Plus with this is you saved about $500 to boot for the Studs and machine work....

i should have asked the same question a few yrs ago when i did my svo block
lol

jesse wrote:i should have asked the same question a few yrs ago when i did my svo block
lol

What you need Jesse is a real machine shop not that fly by night you used

very true
that is why i went to line's performance
it didi cost a bit more but he has way better stuff
and ton of knowalge so far motor has been running better than ever
but he did have his hands full fixing the other shops work