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I was wondering what valve spring could the stock LA rocker arms handle (hydraulic flat tappet). Cam lift specs .507 int, .494 exh. Spring recommended is Comp #995-16. 1.437" o.d., seat load 115 @ 1.700", open load 336 @ 1.150". Any help or suggestions is greatly appreciated. Steve~a.k.a...

Just got my short block back from the shop. Long story short it's a 73 cast crank 340. I had the shop balance the new pistons/rod assemblies and original crank. My question is, do I still need to use the original harmonic (cast crank)balancer and a torque converter for the cast crank set up, or...

Going to pull the trigger on a 340, pretty sure it's a '73, and going into a '67 Barracuda with original the 273/904. Hoping to make this a plug n play swap. Besides the motor mount/bracket on the RH side, will everything else just bolt on the 340? As in my original A/C unit, P/S pump, Alt...