CHEVROLET APPLICATION
Competition Series (Big Block V8)
This model features an undercut stem in the head area.
In addition to reducing the valve weight (which provides benefits in
opening rate and RPM limits) the radius of the head is such that it significantly
improves air/fuel flow. This model enjoys great success when used with
stock heads, as well as modified versions. Fully swirl-polished Chromed
stems and Stellite tips.
Ideal for tough racing applications of all kinds.
Now available for imports. 
Back to Chevrolet Competition Menu
|
APPLICATION |
TYPE |
INSTALL
HEIGHT |
HEAD
DIA. |
STEM
DIA. |
GROOVE
TYPE |
BLACK
KNIGHT |
PRICE
$EA |
PART
NUMBER |
PRICE
$EA |
|
BIG BLOCK (Legal
NHRA & IHRA Stock)
|
|
396-454
C.I.D. |
EX |
STOCK |
1.880 |
STOCK |
1G |
1003BK |
14.38 |
1003 |
12.38 |
|
396-454
C.I.D. ± |
EX |
STOCK |
1.720 |
STOCK |
1G |
1004BK |
11.87 |
1004 No
Polish |
11.87 |
|
396-454
C.I.D. |
IN |
STOCK |
2.190 |
STOCK |
1G |
1055BK |
15.48 |
1055 |
13.36 |
|
396-454
C.I.D. ± |
IN |
STOCK |
2.065 |
STOCK |
1G |
1054BK |
Call |
1054No
Polish |
11.01 |
|
396-454
C.I.D. |
EX |
STOCK |
1.720 |
0.3715 |
1G |
1205BK |
13.98 |
1205E |
12.17 |
|
396-454
C.I.D. |
EX |
STOCK |
1.88000 |
0.3715 |
1G |
1206BK |
15.67 |
1206E |
12.32 |
|
396-454
C.I.D. |
EX |
100 |
1.880 |
0.3715 |
1G |
|
|
1.21E+103 |
Call |
|
396-454
C.I.D. |
EX |
STOCK |
1.940 |
0.3715 |
1G |
1207BK |
15.76 |
1207E |
13.93 |
|
396-454
C.I.D. |
EX |
0.1 |
1.900 |
0.3715 |
1G |
1211SGB |
15.90 |
1211SG |
12.32 |
|
396-454
C.I.D. |
IN |
STOCK |
2.190 |
0.3715 |
1G |
1254BK |
16.46 |
1254E |
11.63 |
|
396-454
C.I.D. |
IN |
100 |
2.190 |
0.3715 |
1G |
|
|
1.25E+103 |
|
|
396-454
C.I.D. |
IN |
STOCK |
2.250 |
0.3715 |
1G |
1255BK |
Call |
1255E |
13.18 |
|
396-454
C.I.D. |
IN |
100 |
2.250 |
0.3715 |
1G |
|
|
1.26E+103 |
|
|
396-454
C.I.D. |
IN |
STOCK |
2.300 |
0.3715 |
1G |
|
|
1257SG-Std |
13.87 |
|
396-454
C.I.D. |
IN |
0.05 |
2.250 |
0.3715 |
1G |
1256SGB |
17.03 |
1256SG |
13.64 |
|
396-454
C.I.D. |
IN |
0.1 |
2.300 |
0.3715 |
1G |
1257SGB |
16.80 |
1257SG |
13.18 |
|
UNDERCUT
STEMS
- These valves have undercut stems for improved
flow in stock and slightly modified heads. All
valves are swirl polished with hard tips.
|
|
396-454
C.I.D. |
EX |
STOCK |
1.725 |
0.3715 |
1G |
|
|
1403E |
11.10 |
|
396-454
C.I.D. |
EX |
0.1 |
1.725 |
0.3715 |
1G |
|
|
1.40E+103 |
12.32 |
|
396-454
C.I.D. |
EX |
STOCK |
1.880 |
0.3715 |
1G |
|
|
1404E |
11.10 |
|
396-454
C.I.D. |
EX |
0.1 |
1.880 |
0.3715 |
1G |
|
|
1.40E+103 |
|
|
396-454
C.I.D. |
IN |
STOCK |
2.065 |
0.3715 |
1G |
|
|
1455E |
12.07 |
|
396-454
C.I.D. |
IN |
0.1 |
2.065 |
0.3715 |
1G |
|
|
1.46E+103 |
|
|
396-454
C.I.D. |
IN |
STOCK |
2.190 |
0.3715 |
1G |
|
|
1456E |
12.01 |
|
396-454
C.I.D. |
IN |
0.1 |
2.190 |
0.3715 |
1G |
|
|
1.46E+103 |
12.38 |
|
5/16" STEMS- These valves have 5/16 stems for those who
want a light valve without going to titanium.
|
|
396 & up
C.I.D. |
EX |
0.1 |
1.880 |
0.3085 |
1G |
|
|
1506SG |
15.48 |
|
396 & up
C.I.D. |
EX |
0.1 |
1.940 |
0.3085 |
1G |
|
|
1507SG |
15.48 |
|
396 & up
C.I.D. |
EX |
STOCK |
1.940 |
0.3085 |
1G |
|
|
1508SG |
15.48 |
|
396 & up
C.I.D. |
EX |
STOCK |
1.940T |
0.3085 |
1G |
|
|
1509SG |
15.48 |
|
396 & up
C.I.D. |
IN |
0.1 |
2.190 |
0.3085 |
1G |
|
|
1555SG |
15.48 |
|
396 & up
C.I.D. |
IN |
0.1 |
2.250 |
0.3085 |
1G |
|
|
1556SG |
15.48 |
|
396 & up
C.I.D. |
IN |
STOCK |
2.250 |
0.3085 |
1G |
|
|
1557SG |
15.48 |
|
11/32" STEMS
- These valves have 11/32 stem diameter and are
recommended for most racing applications. All
valves are swirl polished with hard tips.
|
|
396 & up
C.I.D.. |
IN |
STOCK |
2.190 |
0.3415 |
1G |
1651SGB |
15.48 |
1651SG |
12.32 |
|
396-454
C.I.D. |
IN |
100 |
2.190 |
0.3415 |
1G |
|
|
1651SG+100 |
13.76 |
|
396 & up
C.I.D. |
IN |
STOCK |
2.250 |
0.3415 |
1G |
1652SGB |
15.90 |
1652SG |
12.32 |
|
396-454
C.I.D. |
IN |
100 |
2.250 |
0.3415 |
1G |
|
|
1652SG+100 |
13.76 |
|
396-454
C.I.D. |
IN |
250 |
2.250 |
0.3415 |
1G |
|
|
1652SG+250 |
13.76 |
|
396-454
C.I.D. |
IN |
STOCK |
2.300 |
0.3415 |
1G |
|
|
1657SG |
13.87 |
|
396 & up
C.I.D. |
EX |
STOCK |
1.940 |
0.3415 |
1G |
1601SGB |
16.28 |
1601SG |
12.32 |
|
396 & up
C.I.D. |
EX |
0.1 |
1.940 |
0.3415 |
1G |
1602SGB |
17.98 |
1602SG |
13.87 |
|
396 & up
C.I.D. |
EX |
0.25 |
1.940 |
0.3415 |
1G |
1603SGB |
Call |
1603SG |
13.87 |
|
396 & up
C.I.D. |
EX
|
STOCK |
1.900T |
0.3415 |
1G |
1604SGB |
16.40 |
1604SG |
12.32 |
|
396 & up
C.I.D. |
EX |
0.1 |
1.900TF |
0.3415 |
1G |
1606SGB |
12.32 |
1606SG |
13.87 |
|
396 & up
C.I.D. |
EX |
STOCK |
1.880 |
0.3415 |
1G |
1607SGB |
Call |
1607SG |
12.32 |
|
396 & up
C.I.D. |
EX |
0.1 |
1.880 |
0.3415 |
1G |
1608SGB |
12.32 |
1608SG |
12.32 |
|
396 & up
C.I.D. Pont. |
EX |
STOCK |
1.900T |
0.3415 |
1G |
6008SGB |
16.66 |
6008SG |
15.48 |
|
396 & up
C.I.D. |
IN |
0.1 |
2.375 |
0.3415 |
1G |
1653SGB
|
Call |
1653SG |
15.48 |
|
396 & up
C.I.D. |
IN |
0.25 |
2.375 |
0.3415 |
1G |
1654SGB |
Call |
1654SG |
15.48 |
|
396 & up
C.I.D. |
IN |
0.1 |
2.300 |
0.3415 |
1G |
1655SGB |
18.14 |
1655SG |
13.18 |
|
396 & up
C.I.D. |
IN |
0.25 |
2.300 |
0.3415 |
1G |
1656SGB
|
Call |
1656SG |
13.93 |
|
396 & up
C.I.D. Pont. |
IN |
STOCK |
2.300 |
0.3415 |
1G |
6009SGB |
Call |
6009SG |
15.48 |
|
396 & up
C.I.D. Pont. |
IN |
STOCK |
2.400 |
0.3415 |
1G |
6010SGB |
Call |
6010SG |
15.48 |
|
|
Call 1-877-354-3812
to order
Your SI Performance Valve Today!! |
|
