My freind has a 429 scj comeplet motor disasembled the crank wraped and packed with greas light surface rust on cylinder walls probly could be homed will need new piston because of the piston haveing hair line cracks minus carb I ben trying to get off of him for years ive never made him an offer What should i offer him
Hard to say sight unseen. Are you certain it's a 429 Super Cobra Jet?
429's and 460's use the EXACT same engine blocks...and frankly, all the other parts too. The only difference between a 429 and 460 on any given year that they were both produced is the crankshaft (stroke) and pistons (pin location).
Make sure you are buying a 429 SCJ engine. If it is a true CJ, then it should have these block and head casting numbers:
Of course there is more to the equation, but the bare block and heads alone are worth well over $1000 to the right people.
If the numbers on the block and heads are different than what I posted above, please post your findings here in this thread and I'll tell you what the engine really is.