1968 Bb Alternator Adjusting Bracket

[Donald B.]

I Have Two Questions For The Experts Today.

The First Is A Bit Embarrassing But The Pictures In The Fact Book Conflict. Does The Alternator Adjusting Bracket Bolt To The Front Or The Back Of The Alternator? Page 21 Shows It Bolted To The Back, Page 23 Shows It Bolted To The Front, And Page 26 Shows The L-88 Bolted To The Back.

The Second Question Concerns The Hood Latch. Early Cars Had 2 Mounting Holes And Later Cars Had 3. My Car Is F-15 And It's Difficult To Tell If It's Early Or Late. I Was Hoping Someone Might Have A Car Close To Mine That Could Advise.

As Always, The Help Is Appreciated.

Don

[Jack C.]

Re: 1968 Bb Alternator Adjusting Bracket

Don, my 68 bolts to the front. The L88 could be the exception. Mine also has power steering if that matters. My 68 F-22 car has 2 bolts for the hood latches.

[Donald B.]

Re: 1968 Bb Alternator Adjusting Bracket

Thanks For Your Help, Jack.

[Terry B.]

Re: 1968 Bb Alternator Adjusting Bracket

Don,

My '68 has a December '67 build date. It is the L-36 with Power Steering too. I have included pictures of the latches on the firewall and how the alternator bolts. Let me know if you need anything else.

[Terry M.]

Re: 1968 Bb Alternator Adjusting Bracket

I Have Two Questions For The Experts Today.

The First Is A Bit Embarrassing But The Pictures In The Fact Book Conflict. Does The Alternator Adjusting Bracket Bolt To The Front Or The Back Of The Alternator? Page 21 Shows It Bolted To The Back, Page 23 Shows It Bolted To The Front, And Page 26 Shows The L-88 Bolted To The Back.

The Second Question Concerns The Hood Latch. Early Cars Had 2 Mounting Holes And Later Cars Had 3. My Car Is F-15 And It's Difficult To Tell If It's Early Or Late. I Was Hoping Someone Might Have A Car Close To Mine That Could Advise.

As Always, The Help Is Appreciated.

Don

All C3 alternators have the head of the adjusting bolt toward the rear of the alternator "ear." I believe the AIM will show the orientation of that bolt.

[Brandon T.]

Re: 1968 Bb Alternator Adjusting Bracket

Don,

My '68 has a December '67 build date. It is the L-36 with Power Steering too. I have included pictures of the latches on the firewall and how the alternator bolts. Let me know if you need anything else.

Terry, what is the build date on your car? It was built in 67 like my 68 was correct?

I was thinking early 68's had the emissions sticker on the radiator, mine is 404080.

just checking to see if putting mine on the radiator was correct for mine.

thanks

[Joe L.]

Re: 1968 Bb Alternator Adjusting Bracket

I Have Two Questions For The Experts Today.

The First Is A Bit Embarrassing But The Pictures In The Fact Book Conflict. Does The Alternator Adjusting Bracket Bolt To The Front Or The Back Of The Alternator? Page 21 Shows It Bolted To The Back, Page 23 Shows It Bolted To The Front, And Page 26 Shows The L-88 Bolted To The Back.

The Second Question Concerns The Hood Latch. Early Cars Had 2 Mounting Holes And Later Cars Had 3. My Car Is F-15 And It's Difficult To Tell If It's Early Or Late. I Was Hoping Someone Might Have A Car Close To Mine That Could Advise.

As Always, The Help Is Appreciated.

Don

Don------


First of all, the alternator bracketry configuration is completely different for big block cars with power steering as opposed to cars without power steering. Power steering big blocks cars share NONE of the alternator mounting brackets with non-power steering cars. Power steering versus non-power steering is the only determining factor, though. Engine options or other installed options have no effect on the brackets.

Second, as far as the hood latches go, if you are talking about the LOWER (firewall) latches, I don't know of any that were 3 bolt retention. If you are talking about the upper brackets (on hood), I don't know of any that were ever 2 bolt retention.

[Terry B.]

Re: 1968 Bb Alternator Adjusting Bracket

Brandon,

To answer your question regarding the emission stick, the judging manual states that early '68 had the sticker on the driver side of the radiator. It does not give the date of the change to the firewall. My car has been judged a number of times and the location on the firewall has not been penalized. However, original cars could give insite as to the transition from the radiator to the firewall. I would like to hear from original owners about the emission sticker location but this is not the thread to do it.

[Donald B.]

Re: 1968 Bb Alternator Adjusting Bracket

Thanks For All The Help But I Inadvertantly Used The Incorrect Terminology. I Was Reading The "hood Support" Section In The Judging Manual And Used The Terminolgy "hood Latch" When I Asked The Question. Sometimes Getting Older Isn't As Much Fun As It Used To Be. My Question Concerning The Hood Support Was Whether An F-15 Car Would Have The 2 Bolt Or 3 Bolt Attachment. On The 3 Bolt I Believe That 2 Of The Bolts Join With The Inner Fender Panel And The 3rd Bolt Goes Through The Rain Channel. The 2 Bolt Support Utilizes 2 Bolts Through The Inner Fender Panel Only. That Is The Question I Was Trying To Ask. Sorry.

And, I Would Also Like To Know If The Distributor Hold Down Bracketry Would Consist Of The Solid Steel Bracket Or The Steel Wire Bracket?

Thanks Again For All The Help.

Don

[Joe L.]

Re: 1968 Bb Alternator Adjusting Bracket

Thanks For All The Help But I Inadvertantly Used The Incorrect Terminology. I Was Reading The "hood Support" Section In The Judging Manual And Used The Terminolgy "hood Latch" When I Asked The Question. Sometimes Getting Older Isn't As Much Fun As It Used To Be. My Question Concerning The Hood Support Was Whether An F-15 Car Would Have The 2 Bolt Or 3 Bolt Attachment. On The 3 Bolt I Believe That 2 Of The Bolts Join With The Inner Fender Panel And The 3rd Bolt Goes Through The Rain Channel. The 2 Bolt Support Utilizes 2 Bolts Through The Inner Fender Panel Only. That Is The Question I Was Trying To Ask. Sorry.

And, I Would Also Like To Know If The Distributor Hold Down Bracketry Would Consist Of The Solid Steel Bracket Or The Steel Wire Bracket?

Thanks Again For All The Help.

Don

Don------


As you noted, there were 2 hood supports used for the 1968 model year. The first was GM #3914295. I believe this is the "2 hole attachment" piece. The second was GM #3936301. This was the "3 hole attachment" piece. Just when the change-over occurred I do not know. I think the best evidence would involve examination of your hood surround, assuming it's original to the car. If there's a hole there, it used the later style; if no hole, it's the earlier style. If the surround has been previously replaced, then it's going to take observations from original cars built about the same time as yours to pin it down. I think the change occurred ABOUT the time your car was built.

As far as the distributor hold-down clamp goes, I used to think that all 1968's used the solid steel-type clamp. However, in an earlier discussion on this board folks with original 68's reported having the "wire-type" clamp. So, I expect the wire type clamp was used for 1968. It could be, though, that the solid-steel clamp replaced it sometime during the model year.

By the way, the solid steel type clamp was not "new" at this time. It was a part used in the C1 era and discontinued in favor of the "wire-type" clamp. Then, it was "brought back" about 1968 or 1969, for sure.

[Terry B.]

Re: 1968 Bb Alternator Adjusting Bracket

Don,

My December '67 built car has the 3 bolt hood support with the top bolt going through the rain channel.

As for the coil support, my car does not have the wire support bracket. I am not sure of its originality, however.

[Jack C.]

Re: 1968 Bb Alternator Adjusting Bracket

Terry, when you get a chance, post a oix of the three bolt support mounting.

[Terry B.]

Re: 1968 Bb Alternator Adjusting Bracket

Here is the picture of the '68 3 bolt Hood Support on my car.

[William H.]

Re: 1968 Bb Alternator Adjusting Bracket

I think my car is later then Terry's car but it has two bolts on the hood suport.

[Jack C.]

Re: 1968 Bb Alternator Adjusting Bracket

My January 22, 1968 built car has two bolts.