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post #3 of (permalink) Old Sep 8th, 09, 12:56 AM Thread Starter
jeffschevelle
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Re: 66-67 BBC Harrison Radiator research report

[Part 3] ****UPDATED 9/20/09****

- 1966 L34 with manual trans and A/C or HD radiator:
P/N – 3010208 (this is a “Large” 4-row radiator without finger guard.)

B/S code – VI

No Finger guard
Cap on Driver’s side
Top tank code – UN
Bottom tank code – BP

Core ID tag (??) – AK (maybe - the A was very hard to read. Seen on original VI tagged 4-row)

Sources for p/n and B/S code info –
- Multiple pics on TC, and from Mike C., of manual trans 4-row radiator with VI B/S tag. One picture is attached.

- 66 and 67 AIM Sec. C60 (A/C) pg B-3, and Sec. V01 (HD Rad) pg A-1.
(NOTE – Those Sections of the 66 AIM list p/n 3010203 for manual and 3010209 for AT. That is a typo and is corrected in the 67 AIM which specifically lists 3010208 and 3010209. P/N 3010208 is also listed in the Chev. Parts History index and the superceding p/n is in the P&A dtd 10-1-66 for this application. P/N 3010203 is not listed in any of the parts books.)
Note - this pic is from a fan shroud car, the shroud is just taken off. Note the small tag, appears to be AK,but unclear. Courtesy Mike Crown:


Courtesy Orlando Cruz:


- 1966 L34 with PG and A/C or HD radiator:
P/N – 3010209 (this is a “Large” 4-row radiator without finger guard)
Identical to a 3010208 except addition of trans cooler lines.

B/S code – Unknown. Can anyone help??

No Finger guard
Cap on Driver’s side
Top tank code – UN
Bottom tank code – BR
Core ID tag (??) – AK (maybe)

Sources for p/n info –
- 66 and 67 AIM Sec. C60 (A/C) pg B-3, and Sec. V01 (HD Rad) pg A-1.
Bottom tank of Large 4-row for Automatic:



- 1966 L78 with manual trans, without HD radiator option (1966):
P/N – ___??___ (this is a “Large” 4-row radiator with finger guard)

The p/n may be 3010311, but there may also have been an earlier P/N prior to November of 1966. See notes below. Needs verification from an original 66 L78 without fan shroud.)

B/S code – VM (verified from Original survivor 66 L78,and also from at least two real 66 L78 build sheets.)

Finger guard
Cap on Driver’s side
Top tank code – UN
Bottom tank code – BP
Core ID tag (??) – AK (maybe)

Sources for p/n and application info –
- 66 AIM Sec. L78 pg A-2, indicates that a different radiator (p/n not listed there) was used for L78 versus the production 396 radiator (which was 3007620 VX with finger guard). It also states that this unidentified p/n radiator “assembles same as prod. 13817-67" -- in other words, without a fan shroud. Which means it had to have a finger guard.

- Two original 4-row 66 manual radiators with finger guards (UN and BP tanks) in unrestored 66 L78 Convertible owned by TC member 66_L78_Ragtop, and in unrestored 66 L78 coupe. See attached pics below.

- Real 4-row 66 manual radiator (dated B, Feb. of 1966) that had a finger guard, removed from a wrecked, engineless 66 Chevelle SS some 25+ years ago. Pictures are attached below. The two bright silver areas on top are where the two legs of the finger guard were attached. (The radiator shop that recored it removed and discarded the two finger guard pieces contrary to my instructions!!). Since it had a finger guard it had to be a non-shroud car. And since all L35’s and L34’s with HD Radiator or AC or AIR received a fan shroud, the only other possibility for this radiator is that it was the “standard” unit for L78 without a shroud.

- In the 7-1-1966 parts book, p/n 3010311 is listed as "second design" for L34 w/ AC or HD radiator (which has a shroud), and for L78 without HD radiator (which does not have a shroud). So this would be a 4-row unit, and it would have a finger guard so it could be used in service replacement with or without a fan shroud for all the listed applications. The p/n 3010311 also replaced p/n 3010208 (4-row without finger guard) in November of 1966 for all 4-row manual service replacement applications, but the 67 AIM continued to list p/n 3010208 for assembly line usage for fan shroud applications. Based on all of that, I believe 3010311 to be the p/n for the 4-row unit with a finger guard. But I do not know what the “first design” p/n was.
66 L78 convertible - note the finger guard mounting legs (Courtesy Orlando Cruz (66_L78_Ragtop):


Survivor 66 L78 Coupe - Note the finger guard in the upper left corner of the picture (Courtesy Orlando Cruz):

Photo By Jeff Helms:



- 1966 L78 with manual trans, with HD radiator option:
P/N – 3010208 (this is a “Large” 4-row radiator without finger guard.)


B/S code – VI

Same radiator as L34 manual with HD radiator – See full description and pics above.
************************************************** *****************************************
- 1967 L35 with Manual Trans:
P/N 3012137 (this is a “Small” 3-row radiator with finger guard)

B/S code – VU

Finger guard
Cap in Center
Top tank code – UC
Bottom tank code – BU
Core ID tag (??) – Unknown

Sources for p/n and B/S code info –
- 67 AIM, Sec. 11-13, Pg A-8
- P&A dtd 10-1-67
- Photograph of original tag on Dale M’s 1967 Chevelle reference CD
Courtesy Dave Nickles:

Courtesy Dale McIntosh:



- 1967 L35 with PG or TH400:
P/N – 3013424 (this is a “Small” 3-row radiator with finger guard)
Identical to a 3012137 except addition of trans cooler lines.

B/S code – Unknown, but is probably VV or VW (need verification)

Finger guard
Cap in Center
Top tank code – UC
Bottom tank code – Unknown.
Core ID tag (??) – Unknown

Sources for p/n –
- 67 AIM, Sec. M35, Pg A-22
- 67 AIM, Sec. M40, Pg A-10
- P&A dtd 10-1-67
- 1967 L34 with Manual Trans:
Per the AIM, the L34 manual radiator is the same as 67 L35 manual above (P/N 3012137-VU “Small” 3-row radiator with finger guard). But see question under Section II.C. above as to whether the 67 L34 manual instead came with the “Medium sized” 3007620-VX radiator with finger guard (described under 66 L35 and L34 manual above).

Sources suggesting “Small” radiator is correct –
- 67 AIM, Sec. L34, does not indicate that it got a different radiator than production 396.

- 67 AIM, Sec. M35 pg A-22, indicates that any “396” engine (L34 or L35) with PG got the Small radiator.

- By contrast, 67 AIM Sec. M40 pg A-10 specifically states that L35 gets the Small radiator with TH400 and L34 gets the Medium sized 3007621 radiator with TH400. If L34 is listed there to get the bigger radiator, then you would expect it to also be listed in Sec. M35, or in Sec. 11-13, or in Sec. L34. But it is not.
Sources suggesting “Medium sized” radiator is correct –
- P&A dtd 10-1-67, which specifically says that the two Small radiator p/n’s are not applicable for L34 (although it does not list any other p/n for L34 without HD radiator or A/C).

- Multiple claimed original 67 L34 cars with medium sized radiators with finger guards (3007620-VX unit)
- We need verification from some confirmed original 396/350HP 67’s.
- 1967 L34 with PG:
Per the AIM, the L34 PG radiator is the same as L35 PG above (P/N 3013424 “Small” 3-row radiator with finger guard). But this has the same question noted under L34 manual above as to whether the 67 L34 with PG instead came with the “Medium sized” 3007621-VY radiator with finger guard (described under 66 L35 and L34 PG above).

- We need verification from some confirmed original 396/350HP 67’s.
- 1967 L34 with TH400:
P/N – 3007621 (this is a “Medium sized” 3-row radiator with finger guard – see full description under 66 L34 PG above).

B/S code – VY

Source for p/n –
- 67 AIM, Sec. M40, Pg A-10
- 1967 L35 with manual trans and A/C, AIR, and/or HD radiator;
and L34 with manual trans and AIR (without A/C or HD Radiator):
P/N – 3007622 (this is a “Medium sized” 3-row radiator without finger guard – see full description under corresponding 66 section above)

B/S code – VZ

Sources for p/n –
- 67 AIM Sec. K19 (AIR) pg A-8.
- 67 AIM Sec. C60 (A/C) and Sec. V01 (HD Rad.) just say “396” and do not separate L34 from L35 for the p/n of the HD unit; and they only list the p/n’s for the Large 4-row units. However it is known that 67 L35’s with A/C did not come with the Large 4-row radiator. The correct unit is the Medium sized” 3-row radiator.
- 1967 L35 with AT and A/C, AIR, and/or HD radiator;
and L34 with AT and AIR (without A/C or HD Radiator):
P/N – 3007623 (this is a “Medium sized” 3-row radiator without finger guard – see full description under corresponding 66 section above)

B/S code – VK

Sources for p/n–
- 67 AIM Sec. K19 (AIR) pg A-8.
- 67 AIM Sec. V01 (HD Rad.) pg A-1.
- See note above regarding 67 AIM Sec. C60 (A/C) reference to “396”.
- 1967 L34 with manual trans and A/C or HD radiator:
P/N – 3010208 (this is a “Large” 4-row radiator without finger guard – see full description under corresponding 66 section above)

B/S code – VI

Sources for p/n –
- 67 AIM Sec. C60 (A/C) pg B-3, and Sec. V01 (HD Rad) pg A-1.
- 1967 L34 with AT and A/C or HD radiator:
P/N – 3010209 (this is a “Large” 4-row radiator without finger guard – see full description under corresponding 66 section above)

B/S code – Unknown

Sources for p/n info –
- 67 AIM Sec. C60 (A/C) pg B-3, and Sec. V01 (HD Rad) pg A-1.
- P&A dated 10-1-67
- 1967 L78 with manual trans:
(NOTE: ** All info below needs verification from an original 67 L78.)

P/N – 3010208 (this is a “Large” 4-row radiator without finger guard and with fan shroud – see full description full description under 66 L34 manual HD Rad. section above)

B/S code – VI

Sources for p/n and application info –
- 67 AIM Sec. L78 pg A-3. It indicates that a different p/n (not listed there) was used for L78 versus the production 396 radiator; and it lists a “Radiator Shroud” as one of the non-illustrated parts that was standard with the L78 option package. The correct Large 4-row radiator with a shroud is p/n 3010208 (as listed under 66 L78 and L34 with HD radiator above).

- 67 AIM Sec. V-01 (HD Radiator) does not refer to L78 at all (it does in the 66 AIM). If 67 L78 came with a Large 4-row radiator and a shroud, then there was nothing left to upgrade. So it makes sense that there is no reference to L78 on the HD radiator option page.
- Needs to be verified on an original unrestored car.
[End]

Jeff Helms
-65 Z16 Survivor (Red/black/white int.) (
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-65 Z16 drag car, unrestored (Red/Red)
-65 SS Convertible (Red)
-65 300 2-dr Wagon, Modified (Tuxedo Black)

-66 SS L78 Coupe (Marina Blue), unrestored
-66 SS L34/M20 Survivor Coupe (Aztec Bronze) - 'Vintage Legend' Certified (
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-66 SS Convertible (Marina Blue)- "LOADED"

-67 SS L78 Survivor Coupe (Grenada Gold)
-67 SS L34/M21 Survivor Coupe (Tahoe Turquoise)
-67 SS L34/M20 Convertible (Bolero Red)
-67 ElCamino L35/M20 (Butternut Yellow)
-67 Concours Station Wagon (Mountain Green)

-67 Camaro SS350 Survivor (Grenada Gold)- 'Vintage Legend' Certified by the American Camaro Association

Last edited by jeffschevelle; Sep 20th, 09 at 3:24 PM.
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