poortom

correct carb for my 66 427/425 is holley 3247...got an e-bayer says it is 3418
nedd a little help from the pro's

also I say throttle linkage for SB and BB same..yes??

or maybe I should just paint it red..ummm Tom :confused:

JohnZ

You're right, E-bayer is wrong. 3247A, P/N 3886101 is the correct carb for your car. 3418 was used on the '67 L-88.


[Modified by JohnZ, 11:51 AM 8/17/2001]

Tom454

According to the Corvette Black Book...
R3247A GM #3886101 was used on the 450/425 427 in 1966.
R3418 was used on the 1967 430hp 427 (L88) only. The Black Book gives no GM number for the 3418.

However... I looked in my Holley "Illustrated Parts & Specs" (direct from Holley) and found the following:
R-3247A AAS, 1966 427/425
R-3418A AAS, 1966 427/425
R-3418-1A 1AAS, 1966 & 1967 427/425.

So... I looked in my Holley "Numerical Listing" catalog and found the following:
R3247A Model 4150-C, 1966 427/425 GM #3886101
R3418A Model 4150, 1966 427/425 GM #3886091
R3418-1A Model 4150, 1966 & 1967 427/425 GM #3886091

Holley makes no mention about the 430hp L88 application.

The 3247 is a model 4150-C, whereas the 3418 is a model 4150 (according to Holley)

There appears to be some confusion amongst the Holley gods....
According to Holley... the 3418 could have been applied to both 1966 and 1967 427/425. The 3247 would have been just 1966 427/425. Go figure. Perhaps they had some mid-production changes? The suffix after the Holley list number indicates a manufacturing/engineering change... something as simple as a different jet size would qualify.

I'll let someone else answer the throttle lever/rod question. Just have to look in the assembly manual.

clem zahrobsky

66 427 vette used a 3247,66 427 car used a 3246,67 430 hp L-88 used 3418-A according to my GM spec book. :chevy

Tom454

Yeh.... and Holley says the 3246A is a 4150-C used only on 1966 427 Corvette and 1966 Chevelle 396. GM #3885067. These carbs should have the GM number stamped on them as well as the Holley LIST number.

I am using Holley "Illustrated Parts & Specs" Weatherly Index 600, part #36-51-6, and, Holley Carburetor Numerical Listing #36-168.

Based on different results from all 3 "Official" sources... Corvette Black Book, Holley, and Clems GM book, I'd say there is some genuine confusion on this one.

What is the GM # stamped on the air horn? Maybe that will narrow it down. Also, is there a suffix on the carb LIST number?

clem zahrobsky

tom i have found the holley parts and spec book to be wrong on the listing of what the carb go on what. my list is from chevy that i got when i was national tech director for a drag racing association many years ago. the 67 L-88 part# 3886091,68 L-88 3925519, 69 L-88 3955205 i have no GM part # listing for the 66 425 hp 427 :chevy


[Modified by clem zahrobsky, 9:34 AM 8/18/2001]

magicv8

The 1966 NCRS JG has the right stuff (and original K19 BB cars are different).
390hp 4160 R3370A #3882835
390hp 4160 3606A #3892341 with K19
425hp 4150 R3247A #3886101

The BB throttle rod is different than SB. My BB rod is on the BB in the corner of my garage - it wont work on the SB in my car.

Aussie64

Just to add more fuel to the fire

Holly Carburetors for BB

65 396 #3868826 assy. (R-3124A)
66 w/H/Per. (427)(exc. AIR) #3882835 assy. (R-3370A)
66 (exc. 427 H/Per.) #3890499 assy. (R-3605A)
66 w/Sp./H/Per. (427) #3886101 assy. (R-3247A)
66 w/AIR. (427) (exc. Sp./H/Per.) #3892341 assy. (R-3606A)
67 w/4BC (427)(exc. AIR) #3906633 assy. (R-3811A)
67 (AIR. w/4BC) (427) #3906637 assy. (R-3815A)
67 w/3/2BC #3902353 assy. secondary (frt. and rear) (R-3659)
67 w/3/2BC (exc. P.G.) #3902355 assy. primary (center) (R-3660)
67 (P.G. w/3/2BC) #3909872 assy. primary (center) (R-3888)
67 w/H.D. (427) #3886091 assy. (R-3418A)
68-69 w/H.D. (427)(1st Design) #3925519 assy. (R-4054A)
69 w/H.D. (427)(2nd Design) #3955205 assy., primary (R-296-A)

Source "Corvette Parts Book: 53-72"

H/Per = High Performance
Sp./H/Per = Special High Performance
H.D. = Heavy Duty (L88)
AIR = Air Injection Reactor
P.G. = Power Glide

poortom

:crazy: :crazy: :crazy:
Well once again thankxx for the info...we'll all be cornfused...guess that means I gotta find a BB linkage and get rid of the small block linkage...oh well

ride with the wind
Tom

Tom454

Paragon Corvette http://www.corvette-paragon.com lists 3 different rods for the 1966 BB...

#PR-1036 1965-1966 with 427 through 12/29/65
#PR-1037 1966-1967 with 427/390 hp
#PR-1038 427/425 hp built after 1/1/66

StrayDog

3247 Is on my Holley.....................