how much hp do you guys think my 340 will make?

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daves 72 dart

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this is a 340 block o-ringed with copper head gaskets 4.07 bore,ported x-heads w/2.08int 1.60ext,crane gold 1.5 roller rockers with crome moly shafts,cam motion roller cam 269 275 @.050 .661 .665 lift,venolia flattop pistons cut for .031 dykes rings 11.3 comp,lunati race steel crank stroked to 3.42 balanced to 8000 rpm,steel 340 rods shotpeened and checked by lunati whithin .001,holley strip dominator intake matched to the heads,m72hv oilpump w/moroso 8qt oilpam,carb will be a 850 or 950
 
What are the flow numbers on the heads? With that cam you're going to have to buzz it to every bit of 8K. The heads will likely be the bottleneck, they tend to stall at lifts above .550..

Depending on head flow, anywhere from 490-570. I'd guess 535 if they flow 265 at .550
 
the heads flow between 260 and 270.the cam was chosen for the use of nitrous.i plan to shift a 7200 to 7400.
 
WOW sounds like a Hell of a motor! How well will those stock rods hold up? Would Eagle sir or h beam be better? I only ask because I'm currently gathering parts for a new motor and was looking a buying a new set instead of reuseing the old ones. Jeff
 
Very close to my old 340. Mine was 11:1, [email protected]" solid flat tappet. Heads flowed about the same. Mine made 485hp @6900, shift at 7200rpms. went 11.60s in a B body @ 3600lbs.

I would say around 500-520hp @7500rpms, shift closer to 7800rpms
 
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