Motor is back from the machine shop, and this is what I have Back of block towards tranny 1364705 on the heads 1374603E Engine No. on top of engine in the front 6B104380 Production code MR 124 It is in a 66 GS Skylark with a 2 speed auto tranny, ABF 4 barrel carb Any if would be great Ron
Ok, I am going to be a pain in the ars. It is a "400" because there never was a 401 in a 66 Gran Sport, at least not by any book. It is actually a 401, but Buick called it a 400. I am not being picky, I just want to be sure Ron knows that.
Thanks guys! This nailhead is the funnest thing I ever worked on. I just wish there was some place to get info for it fast. Its hanging in the garage, all rebuilt ($3600.00) looking awsome, and I can't find the little things to make it go. How do you post pictures in this forum have alot from the hole process on the digital camera that I'd love to share Thanks agian Ron
I believe the 401 cid nailhead engine was introduced in 1959 and had a production run through 66. About the time of the 66 GM production run for cars some say that GM corporate forbid greater than 400 cid in the small/ medium bodies except the Vette. So the name for 401 was in some place changed to "400" until an actual non nailhead true 400 cid was introduced in 67. The 67- 69 engine is completely differrent but rounds off to 400 cid.
Whatcha need Ron what parts and info do you need? Between here and the Nailhead Group on yahoo someones got it, knows it or can get it.
