A different Q on 340 Vs 416
Like you said both should be equally fast.
The 416 would be a better street engine.
340 probably a little more fun on the track.
416 has less down sides. Unless you like a radical small block while idling at lights.
Personally I go 340 3.31, or maybe 3.58 or 3.79 stroke.
I do like a radical small block idling,but it would also be nice with a bunch of torque for a change, had it not been for a very good friends 383 chevy with the same cam and similar heads i would never have thought of building a stroker but that things was such a smokemachine that it kind of got to me.
318, 340 and 360 are all same block
Kind of almost,but i cant see the point in getting another block that needs the same machinework i already have done on the 340 block i already own,unless someone trows a substantial amount of money at me in exchange for the block i alredy own. A stroked 360 turns into a 408 and a 340 becomes a 416 so i fail to see the point here.
500 horse 340 is a different animal. The gear ratio and converter choice is much too conservative for a 500 hp 340.
I'm thinking a stone is in the making.
Would be alitle shy of 500hp,maybe 480 or so HP wich translates into an easy 500+ magazineHP so i put alitle shy of 500hp in there to make sure i confuse everyone. yes it will be under geared and less than optimum converter but trying to make something out of the junk i have.Leaning heavily towards stroker at this point,but i know for a fact that the 340 combo with 3.91:1 gears works quite nicely on the street even thought its probably terrible at a track with traction.
Are these the RPM heads with the .060 cut for piston clearance with out of the block 340 pistons?
get your quench down to the .035-.040 range (note I did not say .030 with the roller cam)
for saturday night build I'd go stroker (also easier to get compression) and keep whatever gears are already in it till you have to change for some reason
the stroker and the 340 will make about the same head dependent top end HP (340 at higher RPM) but the 400 will make more torque below peak HP- where you will driving it most of the time
Yep its a set of those 340 RPM heads,like said its leftovers that wont be perfect for anything but might become something fun.
With stock stroke some flattops and cuting the heads to closed chamber it would make pretty close to 11:1 compression.
With a strokercrank and flattops i would end up at 11.5:1 with no squish and that would most likely push me over the limit for pumpgas unless i go for E85 wish i prefer not to. 20 or so cc dishpistons and cutting the heads should get me right where i want to be with squish
For me I'd never build a 4" stroke small block, To me bore stroke ratios and rod ratios still matter. Plus theres not to many good heads for 400 plus small blocks, thats why after peak hp numbers the curve takes a nose dive. I'd rather build a 383 or 400 than a 408-416.
So for me I'd go no bigger than a 3.79" stroke small block. If I wanted bigger than that I'd go stright to a 500-511 built from a 440.
But thats just me, I see why people build 408-416 and thats why I said he's probably better off building that.
i see the bigblock idea,but i got way to much smallblock stuff collected and i wouldnt mind better heads,there are good heads on the market but well i only have the parts i have.