Who is correct, 65 Judging manual or L.I.C.S.?

[Dwight P.]

1965 Judging manual states that the bell housng inspection plate is secured with 4 recessed hex-head bolts. Typical head marks include "E" or "L" logo.
Long Island Corvette Supply believes that slot-head screws are correct.

Any guidance is appreciated.

DP

[William C.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

Well, at least according to the '64 parts book, (to say nothing of maybe 10-15 engines I've personally disassembled) one clue is the clutch dust shield is held on by the same 1/4-20 bolt with lock washer as is the timing cover, GM part number 3817006, started use in the 1962 MY. The trusty OLD '65 JG seems to agree by the way with the NEW '63-64 manual on that, so that's what I'd be looking for. One clue might be that I have a LOT of spare Chevy engine bolts from the 62-up era in my junk box, but none are 14/20 slotted heads.

[Clem Z.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

Well, at least according to the '64 parts book, (to say nothing of maybe 10-15 engines I've personally disassembled) one clue is the clutch dust shield is held on by the same 1/4-20 bolt with lock washer as is the timing cover, GM part number 3817006, started use in the 1962 MY. The trusty OLD '65 JG seems to agree by the way with the NEW '63-64 manual on that, so that's what I'd be looking for. One clue might be that I have a LOT of spare Chevy engine bolts from the 62-up era in my junk box, but none are 14/20 slotted heads.

the 14/20 are called "stove bolts" and they used a lot of them on the old 6 cylinder chevy engine and that is why they were nicked named "stove bolts"

[Dick W.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

Personally, I believe that 1965 is way too late for the slotted screws. I do not ever remember seeing them in a '65

[Nick M.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

I also have a 63 that according LIC, should have slotted screws but the JM says Hex Head. Anyone out there in NCRS land have the correct answer?

[William C.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

According to the chevy parts book, '62 was the first year for hex heads. They have been used ever since. What LICS states is immaterial, and if you have done your own research prior to making a purchase of a part you will have to buy fewer parts a second time to get a correct one. Always remember, do your research first, then purchase. Do NOT assume a vendor has done your research for you.

[Duke W.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

My '63 inspection cover is still secured with the original 1/4-20 recessed 7/16" hex machine screws.

oops

Duke

[Clem Z.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

I my '63 inspection cover is still secured with the original 1/4-20 recessed 7/16" hex machine screws othewise known as "stove bolts".

Duke

duke stove bolts are screw driver type bolts use on old wood and coal burning stoves and i am old enough to have seen and tighten them with a screw driver. plus they were all over the 6 cylinder chevy engines

[Joe L.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

1965 Judging manual states that the bell housng inspection plate is secured with 4 recessed hex-head bolts. Typical head marks include "E" or "L" logo.
Long Island Corvette Supply believes that slot-head screws are correct.

Any guidance is appreciated.

DP

Dwight-----


I absolutely agree with everyone else; I don't think that slotted head screws were ever used on the bellhousing lower cover for any 63+ Corvette.

[Eugene B.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

Dwight,
Just returned from garage to inspect the bolts in my very original '65.

The flywheel cover bolts are per the '65 TIM & JG. They are recessed head, star washer, bolts with a head stamp that has an L in the center that is surrounded with a large G. There are also three concentric rings around the G.

Hope this helps you.

Regards,
Gene

[Ken A.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

Personally, I believe that 1965 is way too late for the slotted screws. I do not ever remember seeing them in a '65

Check the back of an original water pump.

[Dwight P.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

Gene:

Thanks....this is a big help. There is a lot of misinformation floating around that is frustrating.

DP

[Joe L.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

Check the back of an original water pump.

Ken-----


Yes, waterpumps were an exception. For big blocks, the slotted screws were used until 1967. For small blocks they ended earlier but I don't recall just when. However, I am fairly sure the use of the slotted screws in the waterpump application had more to do with providing a little extra clearance between the rear of the pump and the timing cover. With short leg waterpumps, as used on ALL Corvettes, the clearance can be "touch-and-go".The thing that surprised me is that they EVER stopped using the slotted screws on waterpump backing plates; the clearance issues never "went away".

[Raymond D.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

My very original 2 owner small block 65 has the slotted screws.Since it was basically untouched when I got it( with the original radiator hoses) I have to doubt anyone would change over all the bolts to screws.

[Joe L.]

Re: Who is correct, 65 Judging manual or L.I.C.S.?

My very original 2 owner small block 65 has the slotted screws.Since it was basically untouched when I got it( with the original radiator hoses) I have to doubt anyone would change over all the bolts to screws.

Raymond----

For whatever reason, there seems to be exceptions to almost all "rules". I would say your car is the exception and not the rule.