Max power and revs using only two bolt mains

ppyvabw · Post by **ppyvabw** » Sat May 03, 2008 3:21 pm

As the title suggests.

This is a 3.9 rover. Am tempted to make a cradle, as I have posted on here before a while ago, but can't be arsed.

In either case I'll use the ARP studs, but how much will the two bolt mains take, everything else being blueprinted well and good oiling etc...I was hoping to go a bit mad with this one, maybe even supercharging.

mgbv8 · Post by **mgbv8** » Sat May 03, 2008 9:19 pm

I have run my old pre SD1 V8 3500 for 4 years now with Nitrous.
All stock internals and a 150 shot of gas to take the MGB to 12.4 seconds on the 1/4mile.

I now run a new 4.6 Rangie lump and am trying to see how far i will go before I break it.

Boosted LS1 · Post by **Boosted LS1** » Sat May 03, 2008 10:05 pm

^ I'd agree. You can give it the beans with a stud kit. They work well. Can be bettered if using a girdle as well but probably not really essential.

Post by **Coops** » Sat May 03, 2008 10:53 pm

ive got a 3.9 with stock rods and pistons and crank, not lightened or balanced, im running 150 shot gas and im using ARP mains stud kit and ARP rod bolts, and on my datalog it hits 6.5-7k quite often at the track,

ian.stewart · Post by **ian.stewart** » Sun May 04, 2008 4:49 am

7k all day long with the fixings by ARP, Im making just short of 300hp, anfd intend to giv it some gas later in the year when its had a bit of time to run in.

ppyvabw · Post by **ppyvabw** » Mon May 05, 2008 4:45 pm

Cheers fellas.

Maybe I'll make a simple girdle then just to cure my paranoia if I can be arsed.

Boosted LS1 · Post by **Boosted LS1** » Sat May 10, 2008 5:09 pm

You'll need to make spacers to go between the girdle and main caps. It would be easier to just fit a set of arp studs, job done