1970 LT-1 Intake Manifold Bolts

[George C.]

What size bolts go into a 1970 LT-1 aluminum intake manifold?

[Joe L.]

Re: 1970 LT-1 Intake Manifold Bolts

What size bolts go into a 1970 LT-1 aluminum intake manifold?

George------


3/8 X 1-1/4" grade 5 (3 lines). Standard hex, trimmed ("non-indented") head. The bolt retaining the AIM pump bracket is a bit longer, about 1-3/8".

[George C.]

Re: 1970 LT-1 Intake Manifold Bolts

George------


3/8 X 1-1/4" grade 5 (3 lines). Standard hex, trimmed ("non-indented") head. The bolt retaining the AIM pump bracket is a bit longer, about 1-3/8".

Joe, I can not find these bolts. Do you have a source?

[Leif A.]

Re: 1970 LT-1 Intake Manifold Bolts

Joe, I can not find these bolts. Do you have a source?

George,
Are these what you're looking for?
https://www.paragoncorvette.com/p-35...-bolt-kit.aspx

[Joe L.]

Re: 1970 LT-1 Intake Manifold Bolts

Joe, I can not find these bolts. Do you have a source?

George------


Have you tried sources like Dr. Rebuild, Paragon, and Corvette Central? Paragon part number is 2380K for the complete kit.

[Rich P.]

Re: 1970 LT-1 Intake Manifold Bolts

Most assembly line bolts are 1-1/8" I have seen 1-1/4 but I think it was later than 70 (wouldn't be the first time I'm wrong though!!) C is one of the most common headmarkings on 70 LT1 2016-12-21 20.04.40.jpg2016-12-21 20.05.01.jpg

[George C.]

Re: 1970 LT-1 Intake Manifold Bolts

Is this bolt total length or thread length?

[Joe L.]

Re: 1970 LT-1 Intake Manifold Bolts

Is this bolt total length or thread length?

George------

All bolt lengths are measured from under the head to the very end.