Hey all. I've got a 350 on my stand with heads that have a casting number of 3988820. I can't seem to find any info on these. Can anyone enlighten me a bit on these? Thanks
Beaumont4008 said
Jul 27, 2011
No record of that number, are you sure its not 3998920 ? This would be for a 72-74 350 with 1.94/ 1.50 valves.
No record of that number, are you sure its not 3998920 ? This would be for a 72-74 350 with 1.94/ 1.50 valves.