Posted By: Streetwize
Build a Back-up 372" 340 out of my spare parts? - 11/25/10 07:15 PM
I've got my little 341" mini-stroker aluminum rod motor coming out to make room for the new 414. Heads are going off to Ryan next week so (as usual) I got to thinking that with pretty much just a piston swap and a rebalance I could move this 3.55" forged crank/6" aluminum rod bottom end right into a fresh 340 block and get myself a very high-winding big bore solid roller cam motor at the ready for not a whole lot of extra coin
I was going to sell the whole short block motor ...but now I'm thinking the sum of the parts in-hand is a really solid foundation for a 7500+ rpm screamer...besides if I build it it can just sit there in the corner until a killer deal on a set of W5's drop into my lap
If the motor comes out sweet enough I could pull the 414 and put it in a D-100 pick-up and use it to tow with just kidding!
I love strokers don't get me wrong... but I also love high strung small-blocks that rev like comp eliminator motors too. The 341" was more than adequate to have fun but the 318 bore limits getting any kind of serious (much over 500hp) race head on a bottom end that can stand a whole lot more. But it was the one I had and it was a great idea to build a 340 'the hard way'. The race bottom-end I have in hand is way over-kill potential-wise for a 318. But with a 4.08-ish 340 block at 372 or so inches (that will swallow a 2.08" intake valve) it might just be the best of both worlds...more than adequate bottom end grunt combined with sky-high revability.
Thoughts? Should I go for it?Decisions....decisions
I was going to sell the whole short block motor ...but now I'm thinking the sum of the parts in-hand is a really solid foundation for a 7500+ rpm screamer...besides if I build it it can just sit there in the corner until a killer deal on a set of W5's drop into my lap
If the motor comes out sweet enough I could pull the 414 and put it in a D-100 pick-up and use it to tow with just kidding!
I love strokers don't get me wrong... but I also love high strung small-blocks that rev like comp eliminator motors too. The 341" was more than adequate to have fun but the 318 bore limits getting any kind of serious (much over 500hp) race head on a bottom end that can stand a whole lot more. But it was the one I had and it was a great idea to build a 340 'the hard way'. The race bottom-end I have in hand is way over-kill potential-wise for a 318. But with a 4.08-ish 340 block at 372 or so inches (that will swallow a 2.08" intake valve) it might just be the best of both worlds...more than adequate bottom end grunt combined with sky-high revability.
Thoughts? Should I go for it?Decisions....decisions