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Performer LT1
Designed for 1992-97 LT1 small-block Chevy engines, these Performer cylinder heads deliver 24 horsepower over stock and raise the peak power level by 500 rpm. Features include high-quality stainless steel 1.94" intake and 1.55" exhaust valves, 54cc combustion chambers and high flow 170cc intake and 60cc exhaust ports. The high-velocity Intake and exhaust runners are hand blended in the bowl area and the intake entries and exhaust exits are cnc profiled for increased air-flow. These heads are equipped to accept factory style self-aligning rockers. The casting is manufactured of A356 aluminum and heat treated to T6 spec for superior quality. An extra-thick 5/8" deck and Heli-coil threaded inserts offer improved durability. Performer LT1 cylinder heads are 50-state Street legal and accept factory centerbolt valve covers. Match with RPM Air-Gap intake #7107, throttle body #3809 and camshaft #2108 for the Total Power Package combo. Available fully assembled and ready to bolt on or bare for use with your own valve train components. Made in USA.
Cylinder Head Specifications |
| Combustion chamber volume |
54cc |
| Intake runner volume |
170cc |
| Exhaust runner volume |
60cc |
| Intake valve diameter |
1.94" |
| Exhaust valve diameter |
1.55" |
| Valve stem diameter |
11/32" |
| Valve guides |
Manganese bronze |
| Deck thickness |
5/8" |
| Valve spring diameter |
1.46" |
| Valve spring maximum lift |
.600" |
| Rocker stud |
3/8" |
| Guideplate |
N/A |
| Pushrod diameter |
5/16" |
| Valve angle |
23° |
| Exhaust port location |
Stock |
| Spark plug fitment |
14mm x 3/4 reach, gasket seat |
| Made In |
USA |
| Carb EO# |
D-215-70 |
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Technical Notes: Sold individually. Bare heads will have valve guides and seats installed, but will require final sizing and valve job to match the valves you will be using. Will accommodate stock or aftermarket self-aligning rocker arms. |
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| Description |
Bare |
Complete |
| Performer LT1 for GENII 1992-97 LT1 applications |
61919 |
61909 |
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Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
| #61909 |
| Valve Lift |
.100" |
.200" |
.300" |
.400" |
.500" |
.600" |
.700" |
| Intake |
61 |
117 |
174 |
220 |
242 |
232 |
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| Exhaust |
52 |
100 |
174/140 |
167 |
184 |
192 |
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AMC
Small Block
