71scamp78
Well-Known Member
I have a 72 340 engine with crank, rods and heads. The heads are not x heads but have the big valves. What would be a fair asking price . I'm thinking 750
If it is a 72 340 and all original, it will have the cast crank and the 8.5:1 CR pistons as all 72-73 340's had cast cranks and low compression pistons.Cast or forged crank? Low compression pistons?
all 72-73 340's had cast cranks and low compression pistons.
If it is a 72 340 and all original, it will have the cast crank and the 8.5:1 CR pistons as all 72-73 340's had cast cranks... Joe
Not true, early 72 340's had forged cranks. I've got a 72 340 auto with a forged crank, factory, from a Duster.
Exactly why I asked. I don't see anything stating "original" not an original big valve headed motor, so kinda hard to guess whats been done to it.
If it is a 72 340 and all original, it will have the cast crank and the 8.5:1 CR pistons as all 72-73 340's had cast cranks and low compression pistons.
To the OP, post dates and part numbers of the heads as well because 72-73 340's should have the small valve heads and if your engine has the large valve heads they would be from a 71 or older motor but are still an added bonus. Joe
So are they "J" heads? Is it literally just the block, crank, rods, and heads? Or do you also have some of the minor parts for it too - timing chain cover, crank dampner, etc., etc.? Is it still greasy from just being pulled apart? Or is it rusty from sitting for decades in a garage? Or, better yet, has it been tanked and prep'd for reassembly? A lot of variables here??I have a 72 340 engine with crank, rods and heads. The heads are not x heads but have the big valves. What would be a fair asking price . I'm thinking 750
So are they "J" heads? Is it literally just the block, crank, rods, and heads? Or do you also have some of the minor parts for it too - timing chain cover, crank dampner, etc., etc.? Is it still greasy from just being pulled apart? Or is it rusty from sitting for decades in a garage? Or, better yet, has it been tanked and prep'd for reassembly? A lot of variables here??
Cast or forged crank? Low compression pistons?
Forged and I never mentioned pistons....don't have any
bore question still has not been answered. Lawrence
This info was taken from AllPar.com.1972 - The 340 four-barrel dropped to 240 horsepower:Compression dropped to 8.5:1; the compression height of the piston via wrist pin location changed by 0.10”The crankshaft was switched from forged to cast somewhere in the production cycle, believed to be in early April 1972, with engine 39118000 (thanks, Karl Thomas); a milder camshaft was used340/360 were moved to “J” casting heads with 1.92” intake valves; exhaust valves remained the samePaint went from orange to corporate blue
If allpar is correct,and the switch was in April, that could mean more than a few forged are out there. When was start/stop for model year production back then? October/ July?