Used to tailor secondary enrichment in Rochester Quadrajets of all years. Number indicates tip diameter, letters are for identification purposes only. A smaller diameter tip will richen the secondary fuel curve. Two letter ID is stamped into rod for easy identification.
Power tip diameter: .0413"
Power tip length: Medium
Quantity: 2 Secondary metering rods for Rochester Quadrajet.
---------------------------------------------------------------
Data below is for informational purposes
OEM Rochester Secondary Metering Rod Chart:
Rods listed in BOLD are available from QuadrajetParts.com, others are listed for reference only.
Power tip lengths determine when full enrichment occurs:
---S (Short power tip) Full enrichment occurs at 90 degrees air valve opening.
---M (Medium power tip) Full enrichment occurs at 80 degrees air valve opening.
---L (Long power tip) Full enrichment occurs at 70 degrees air valve opening.
ID Code / Power Tip Dia. / Tip Length
----- Richest -------
AD 0.0222 S
CB 0.0279 S
BV 0.0297 S
DX 0.0300 M
DC 0.0300 M
CC 0.0300 L 2600-CC
BY 0.0317 M
DU 0.0337 S
DS 0.0337 M
DG 0.0337 M
DF 0.0337 M
CF 0.0337 M
DM 0.0393 S
BP 0.0397 S
BW 0.0397 M
CJ 0.0397 S
BM 0.0397 M
BG 0.0397 M
BH 0.0397 M
AX 0.0397 L 2600-AX
BB 0.0397 L
BF 0.0397 S
BJ 0.0397 S
BK 0.0397 S
CA 0.0397 M
CS 0.0397 S
CM 0.0397 M
CE 0.0410 M 2600-CE
BN 0.0410 S
BL 0.0410 S
BE 0.0410 S
DA 0.0440 M 2600-DA
CY 0.0440 M
AU 0.0527 L
CK 0.0527 L 2600-CK
CV 0.0527 L
AH 0.0527 M
EJ 0.0540 S
BU 0.0547 S
EA 0.0547 S
CR 0.0547 S
CX 0.0567 L
EK 0.0567 S
ED 0.0567 M
EF 0.0567 S
EG 0.0567 S
DZ 0.0567 S
DH 0.0567 S
CP 0.0567 M
CN 0.0567 S
CH 0.0567 S
CD 0.0567 L
BZ 0.0567 L
BA 0.0567 M
AP 0.0567 M
AZ 0.0567 L
AY 0.0567 L 2600-AY
AL 0.0567 M
AJ 0.0567 M
AV 0.0567 M
AR 0.0567 M
AK 0.0567 S
EE 0.0570 M
DV 0.0570 S
DR 0.0570 M 2600-DR
BD 0.0577 M
BC 0.0581 M
DN 0.0584 S
BT 0.0597 M
EC 0.0610 M
DJ 0.0647 S
CL 0.0667 L 2600-CL
AT 0.0667 L
DL 0.0679 S
EH 0.0686 S
DP 0.0686 S
BX 0.0697 S
AN 0.0697 S
DB 0.0697 S
DT 0.0700 M
CT 0.0774 M
AS 0.0774 M
CG 0.0774 M
DY 0.0874 L
DW 0.0874 L
DE 0.0874 M
BR 0.0897 L
AW 0.0905 M
BS 0.0947 L
CZ 0.0947 L
EB 0.0947 L
DK 0.0997 L
DD 0.1047 L
----- Leanest -------