The correct cylinder head code and dates for a 59 Vette that was built in 1958

[Philip M.]

So i am new to the NCRS and i am presently restoring J 59 s100146 i have a 739 block and the engine was cast on June 17 th 58 and was assembled on Aug 14 1958 with the code f814CU in order to have the correct dated heads as i beleive they are known as 3748770 heads what would be allowable in so far as the dates go

can i go back before june 17 th and if i can' how far back can i go?

2nd question will the corect heads alwys have to say X 58 on the side
Thanks

[John H.]

Re: The correct cylinder head code and dates for a 59 Vette that was built in 1958

So i am new to the NCRS and i am presently restoring J 59 s100146 i have a 739 block and the engine was cast on June 17 th 58 and was assembled on Aug 14 1958 with the code f814CU in order to have the correct dated heads as i beleive they are known as 3748770 heads what would be allowable in so far as the dates go

can i go back before june 17 th and if i can' how far back can i go?

Thanks

Philip -

Although head dates aren't judged, their casting dates must be prior to the August 14th engine assembly date; they can be dated as far back as six months prior to your car's final assembly date of September 23rd, although that span isn't "typical".