Today, dollar for dollar, is the 318 faster than the 340 ???

Today, dollar for dollar, is the 318 faster than the 340 ???

When I started to ponder upgrading for a little more HP from our 273. My initial plan was go 318. Even tho I had a complete 340 here(needed teardown) I was looking for "maybe" 325 hp.
With help of a few people on here and my machinist(mopar guy), went thru a few different options. Cost of 318 pistons and balancing made ZERO sense $$ wise, that right there was close if not over $1000.
Machinist gave me a great deal on 340 shortblock.
All depends what you can do yourself to HAVE FUN and save $$.
Lol the 340 is still on the stand.

rumblefish360 said
FWIW……
Here is a quick look at what Summit Racing has for pistons for the 318 & 340.

318’s slugs below.
Hyper-U’s
KB-167, flat top, 5cc relief … $391
KB-399, dome, +6cc …………. $348
($43 in saving for the dome piston, interesting…. More compression!)

Forged
Icon IC844 flat top, 4.70cc @ $659
Icon IC845 dome @ 4.90cc @ $659

340 slugs below
KB243 (The only hyper-U) flat top 5cc @ $323
(All forged below)
Speed Pro L-2316F (forged) flat top 7.5cc $366
Ross 99626 dome @ 12.60 cc $638
Ross 99625 flat top 5.5cc $640

toolmanmike said
Interesting, the teen slugs are a bit more money. Not enough to break the bank though. I wonder the compression would be with the KB399's and a 68 cc head?