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Motor is a 340 with cast iron J heads. I have a set of adjustable rockers from a 273 that I was going to use. The rocker shafts that were originally with the 273 rockers were worn noticeability so I swapped them with a set of shafts that had the stamped rockers. I put everything together and...

I am putting my 340 back together finally. When I disassembled the engine there wasn't an oiling tab for the timing chain and the bolt with the oil hole was missing and a regular bolt was in its place. I have heard mixed opinions about the oiling bolt and the tab. How important are they? Should...

I know there are threads discussing the main bolts already but I can't find the one that said where to buy new main bolts that work with a windage tray. I purchased ARP main studs only to find out after the fact that I should line hone the mains with studs. I already have the cam bearings, oil...

Can someone help me decode this 340? I know the block is a 69 but I am curious what it would have came out of. The casting date is 7-14-69. The numbers on the oil pan rail are 0B183694 I believe, they are hard to make out. The numbers on the pad by the head are FW340P30100285. The casting...

I am in the process of gathering parts for my 340 to put it back together again. It dropped a valve shortly after the breakin because of a stupid mistake on my part. Since it has minimal run time on it would it be ok to use the piston rings again? I am planning on honing the cylinders. The...

I am starting to gather parts to build my 340. The block is a 69 bored .030. I have my eye on some TRW 2316 pistons from another member here. I will either be using a set of X heads or some worked over J heads with 2.02/1.60 valves. I have an Edelbrock RPM Airgap intake and Holley 750 carb...

I have decided to rebuild my 340 for the 2nd time. It dropped a valve after the first rebuild.... don't ask.:banghead: The block is fine but the head is shot and so is the piston. I was wondering what everyone was running for pistons in their 340? I was considering Keith Black KB243 pistons...

Hello all. I have a 1969 340 and I was wondering what it is worth. All the machine work is done on the block. It is bored .030 over, crank is polished, block is zero decked and was cooked out. I built the motor but I made a rookie mistake and forgot to check valve to piston clearance. It...

I bought a 360 that was rebuilt about 5000 miles ago. I pulled the heads off to do some porting and a cam change and found 2 different casting numbers. One is 3418915-A and the other is 4343475-A. Are these heads the same as far as flow numbers? Are they the same cc? They both have 1.88 and 1.60...

I have a 360 out of a 87 or 88 4wd truck and I want to put it in my duster. Is the flywheel from a 4wd truck the same as a car 833 4spd? The 360 has a throttle body on it can I bolt a carb onto that intake or do I need to switch the intake also?