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What coil do you recommend for 425 running points and condenser. Thanks

Could anyone recommend what ignition coil I should use on my 425 nailhead. It has conventional distributor with points.

Grhopperass submitted a new listing: switch pitch selenoid - switch pitch selenoid View the entire listing here...

I have home made headers on my 401 that have individual header tubes 1&1/2 in leading into a 3 in. collector. I am replacing this with a 425 bored .040 and I'm told that 1 will need to use 1&5/8 in. tubes. This is a street machine and probably will seldom reach 5,000 RPM. Can anyone out there...

I am building a 425 for my model A. The car weighs 2600 ponds with the current stock 401 and T400 tranny. I will be running a switch pitch T400 behind the 425. My question is what cam grind would be recommended for this setup, stock or mild? I use the car for Street use only. Any suggestions...

I have a 64 buick 425 nailhead out of a Buick Riviera. Also have a T400 Switch pitch tranny. Do I need a crankshaft bushing required when connecting like the earlier 401 nailheads required? Any help would be greatly appreciated.

I'm been offered a 425 nailhead that has been rebuilt. it is bored .040 with cast pistons & chrome moly rings. I'm told that this is the maximum a 425 can be bored out and that the 401 ( which I currently have) is a much better block. Can anyone out there give me advice here. I appreciate all...

I have a comp Cam whith the following specs. Rocker Ratio 1.6 Valve lift on intake / exhaust .464 , duration 288 Cam lift .290 Is this too radical for a street machine? I've read somewhere that these cams are hard on Nailheads. Is there any truth to this. Your guidance and thoughts are greatly...

I'm looking at cylinder heads for the 425.Nailhaed The owner advises that he had the valves changed to chevy small block valves. I hav'ent heard of this before. Can anyone out thee help me here. Thanks IF

Does anyone have a 65 or 66 425 nailhead for sale. I want to replace my 401. Thanks

I'm cirrently running a 401 nailhead in my model A. Its a tight fit. I would like to go with a 425. Are the outside diamensions of each engine the same and will my exhaust headers and intake fit. Thanks

I have a rebuilt T400 SP transmission. It has the dual tine electrical conector, but when I energised each tine, the electromagnet for the kick down is working, but the switch pitch one does'nt seem to work. That is to say I did not hear it click, so I'm assuming whoever rebuilt the trans...

Can anyone out there give me the diameter of the water pump pulley for a 401 nailhead as I have to machine one from scratch. Thanks IF

I have a 1962 401 nailhead engine from which I removed the old dynaflow trans and torque converter. I am replacing it with a T400 SP and a new torque converter. I noticed that there was no pilot bushing with the dynaflow set up. Is one required with my new set up. I seem to be getting...

I have a 401 nailhead , 1962 vintage I believe. Have a T400 trans to bolt up to it with the flex plate that fits both the engine crank and the torque converter. It has the ring gear as part of it for the starter and has the same number of teeth as the torque converter that came with the old...

I prchased a 401 nailhead but am having difficulty identifying the year. The serial No. on the block is "1349048 8A . This would indicate its a 1962-1966 nailhead. It has a 4 barell carb. On the front of the block is "b 1101b 227 if this is any help. I think this engine is 325 H.P. Thanks