Let's look at things in the way that the factory engineers did in regards to the strength of engine parts, that being that whenever possible they wanted a 2 to 1 strength ratio.
In light of this and there prove out test of 24 hours at 4500 rpm I propose this.
The last 400 cid motor topped out at 220 hp with that 557 block, if doubled the hp output to 440 the engineers would have told you your playing with Fire even at only 4500 rpm, now lets up the rpm to 5500 and you have now doubled the load on the main web of that 557 block, now if you add near another 1/4" of stroke over the 400 motors 3.750" your really asking for it and it's just a matter of time and how good your tune is!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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