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Chevy Small-Block v-8<br />
SB2.2 NASCAR Race Heads Continued<br />
12480129<br />
Semi-Finished SB2.2 Aluminum Cylinder Head<br />
• Aluminum NASCAR accepted head<br />
• Bare head, no seats or guides<br />
• Reduced size .375" diameter guide holes<br />
• ”As-cast peanut” ports<br />
• 48cc “as-cast” <strong>com</strong>bustion chamber<br />
A. 88958667<br />
Semi-Finished SB2.2 Design R0X Aluminum<br />
Cylinder Head<br />
• Fully CNC-machined aluminum race head<br />
• Has cast ports and <strong>com</strong>bustion chambers for<br />
professional finishing<br />
• Machined for 4.500" bore center R0X cylinder block<br />
P/N 25534453<br />
• Special spread head-bolt pattern, 3/8" fasteners, 19 holes<br />
• Machined w<strong>it</strong>h add<strong>it</strong>ional .070" material on deck face.<br />
• Valve centerlines moved apart .100" for add<strong>it</strong>ional valve<br />
clearance and larger valves<br />
• Valve angles are 11° x 4° intake, and 7° x 2° exhaust<br />
• Exhaust port pos<strong>it</strong>ions are slightly reoriented, but same<br />
bolt pattern as standard SB2.2<br />
• ”As-cast peanut” intake ports<br />
• ”As-cast peanut” exhaust ports<br />
• 28cc “as-cast” <strong>com</strong>bustion chambers<br />
A<br />
Semi-Finished SB2.2 Design R0X Cylinder Head (exhaust)<br />
Cylinder Heads: Add<strong>it</strong>ional Required <strong>com</strong>ponents<br />
Part Number Head Gaskets (Quant<strong>it</strong>y) Bolts (Quant<strong>it</strong>y) spark Plug Engine Application<br />
93438649 10105117 (2) 10168525 (14), 10168526 (4), 10168527 (16) N/A 12587265, 12499529, 19157995<br />
93438648 10105117 (2) 10168525 (14), 10168526 (4), 10168527 (16) N/A 12587265, 12499529<br />
12558060 10105117 (2) OR 12557236 (2) 10168525 (14), 10168526 (4), 10168527 (16) 19157986 88958602, 12499711, 12499101, 12497317, 12486041, 12496968<br />
12529093 10105117 (2) OR 12557236 (2) 10168525 (14), 10168526 (4), 10168527 (16) 19157986 88958602, 12499711, 12499101, 12497317, 12486041, 12496968<br />
12464298 10105117 (2) OR 12557236 (2) 10168525 (14), 10168526 (4), 10168527 (16) 5614210 88958604, 12499710, 1249772, 12496769<br />
12556463 12557236 (2) 10168525 (14), 10168526 (4), 10168527 (16) 5614210 24502609, 88958603, 12499712, 19201330<br />
25534446 10105117 (2), 10185054 (2) 10168525 (14), 10168526 (4), 10168527 (16) — 12366573, 12496820, 12496822, 12496820<br />
OR 12363763 (2)<br />
Overhaul Gasket K<strong>it</strong>s<br />
A. 19201171<br />
Rebuild Gasket K<strong>it</strong><br />
• F<strong>it</strong>s 350 HO and Circle Track engine P/N 88958602<br />
Chevy small-block v-8<br />
This k<strong>it</strong> includes the following <strong>it</strong>ems:<br />
10105117 2 Head Gaskets<br />
10108676 1 Oil Pan Gasket Set<br />
12555771 1 Rear Main Seal Housing Gasket<br />
89017465 1 Intake Manifold Gasket Set<br />
10105135 1 Water Outlet Gasket<br />
10108435 1 Front Cover Gasket<br />
12560223 1 Fuel Pump Adapter Gasket<br />
3754587 2 Water Pump Gaskets<br />
10108445 1 Distributor Gasket<br />
10046089 2 Valve Cover Gaskets<br />
12554314 1 Crankshaft Rear Main Seal<br />
1968 Camaro Z/28<br />
A<br />
R0X SB2.2 Head (intake)<br />
Rebuild Gasket K<strong>it</strong><br />
A<br />
B. 19201172<br />
Rebuild Gasket K<strong>it</strong><br />
• F<strong>it</strong>s ZZ4, Fast Burn 385, HT383 and Circle Track engines<br />
P/N 88958603 and P/N 88958604<br />
This k<strong>it</strong> includes the following <strong>it</strong>ems:<br />
Mere months after the Camaro bowed in ’67, the Z/28<br />
package joined the lineup, bringing a high-revving<br />
302-inch engine and corner-carving suspension. However,<br />
<strong>it</strong> wasn’t until ’68 that the Z/28 came into <strong>it</strong>s own<br />
as a full-fledged model w<strong>it</strong>h <strong>it</strong>s own exterior badging.<br />
Originally created to sneak in under the Sports Car<br />
Club of America’s displacement lim<strong>it</strong>s of 305 cubic<br />
inches for Trans Am racing, the fusion of a 283 crank<br />
and a 327 block resulted in the 302-cube <strong>com</strong>bination.<br />
The engine featured large-port heads, w<strong>it</strong>h 1.94 intake<br />
valves and 1.60 exhaust valves actuated by a solidroller<br />
camshaft, but was only rated at 290 horsepower.<br />
In real<strong>it</strong>y, <strong>it</strong> made as much as 350 horsepower. W<strong>it</strong>h<br />
that kind of power and an F41 Heavy Duty suspension<br />
to match, Mark Donahue led team Penske to an<br />
SCCA manufacturer’s championship in ’68. Desp<strong>it</strong>e<br />
<strong>it</strong>s road-racing bent, the Z/28 also cleaned up on the<br />
quarter-mile, w<strong>it</strong>h Stock Eliminator driver Dave Strickler<br />
bringing home the championship in his 11-second<br />
Grumpy Jenkins-prepped ’68.<br />
12557236 2 Head Gaskets<br />
10108676 1 Oil Pan Gasket Set<br />
12555771 1 Rear Main Seal Housing Gasket<br />
89017465 1 Intake Manifold Gasket Set<br />
10147994 1 Intake Manifold Gasket Set<br />
10105135 1 Water Outlet Gasket<br />
12560223 1 Fuel Pump Adapter Gasket<br />
3754587 2 Water Pump Gaskets<br />
10108445 1 Distributor Gasket<br />
10046089 2 Valve Cover Gaskets<br />
12554314 1 Crankshaft Rear Main Seal<br />
A<br />
R0X SB2.2 Head (<strong>com</strong>bustion chamber)<br />
Rebuild Gasket K<strong>it</strong><br />
B<br />
154 Buy online at www.gmperformanceparts.<strong>com</strong><br />
Available for purchase online at<br />
gmperformanceparts.<strong>com</strong><br />
155
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