This is just like 10+ years ago!! LOL!!

Had a 372" 360 based engine 10 years ago, ran 10.98 NA on pump gas in a 2800# 69 Dart.

IIRC it was based on a very early production 360 block that apparently used the outgoing 340 core, so it was 4.00 bore (stock) but had tons of meat to work with, and was .70 over (or think of a 340 @ .30 over). Crank was internally balanced, knife edged, .600~ lift solid cam, "super stock prepped" rods. Mopar M1 and holley 750 DP.

I was a 340 guy but thought of it as the best of both.

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Had a 372" 360 based engine 10 years ago, ran 10.98 NA on pump gas in a 2800# 69 Dart.

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You sea level(ish) guys got it good. NA small blocks see the 10s up here too. It's just not as easy.

Arguing about which SB is better is like arguing if Syphilis or gonorrhea is better...

What he said

I`ve had numerous 340 combos in my Dart and ran good with them , but my current 360 combo is the fastest of all of them, I am making more power with less compression and cam than I ran in the 340. But then it could be my combination. My new almost complete combo: R3 based 408 with Indy 360-1 heads / pump gas combo I am hoping makes even more power.

Im an odd duck, I like them all, all have their good and bad.

From the 273 up to the 360. I can tell ya my 408 pulls like a train, and revvs pretty darn good for a long arm engine.

I have had both, my 340 ran good but my 360 is faster. It should be though it has better everything in it.

My car was an original 340 car and that is stated on the hood plates. I often get asked what size motor and when I say 360 I get an odd look sometimes followed by "them 340s sure did run" I usually agree or depending on the person I will say yeah, but a 360 is bigger lol.

As far as the cast vs forges crank argument. Its well known that forged is better and I won't and can't argue thats it not. However I have broken a 340 crankshaft and my 360 crank was still alive when the thrust got eaten.

The 360 brings the cheap though no doubt. Mine wiped the thrust out 9 days before drag week this year. I bought a machined crankshaft and bearings kit from O'rielly auto for $188, and had it in less than 24 hours. It made the drive and is still together sofar lol.

Do you want to race your 340 against one of my 360

340's.... you all are talking a 273 with a 4.125 stroke crank, right??? I bet you could take a lot of weight out of that crank during balancing....

I bet a 318 with a 4.125 stroker crank (396) will stomp most Chev 396's.....

I have a 410 5.9 in the works.....

360 wasn’t nothing but a truck motor....

For a street strip cheap build it would be hard to beat a 360 magnum with a reground cam. And a .030 set of pistons with EQ heads. Those heads really move some air with a little work. 400 to 450 hp depending on what you budget for valvetrain upgrades. If i ever do another 5.9/360 it will retain the stock rockers and lift will max at about .520 but still ought to make 425 hp?

Exactly. And anyone with a 340 block or parts wants beaucoup bucks for them just because they are what they are. I have a stroked 360 to 410 cubes that's a beast! Torque monster.

The biggest difference in stock form, 340 ... pre EPA, 360 ... post EPA

[quote=Roughbird72]The biggest difference in stock form, 340 ... pre EPA, 360 ... post EPA

:What does that have to do with an engine you are going to modify. You got me scratching my head on that one.