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RPM LT4 195
Designed for 1996 LT4 (or) 1992-97 LT1 small-block Chevy engines, LT4 cylinder heads are CNC ported for improved airflow and peak performance. Features include high-quality 8mm stem stainless steel intake and exhaust valves that feed the high flow intake and exhaust ports. The high-velocity intake entries and exhaust exits are CNC profiled for increased air-flow. Combustion chambers are fully CNC machined for absolute consistency and combustion. High-quality conical beehive springs are secured with titanium retainers and valve locks for performance up to .600" valve lift. LT4 heads are equipped with guide plates and 8mm stem valves, adjustable (non self-aligning) rocker arms are required. Match with RPM Air-Gap intake #7109, throttle body #3809 and camshaft #2108 for the Total Power Package combo. RPM LT4 heads are 50-state street legal and accept factory centerbolt valve covers.
Cylinder Head Specifications |
| Combustion chamber volume |
54cc |
| Intake runner volume |
195cc |
| Exhaust runner volume |
75cc |
| Intake valve diameter |
2.02" |
| Exhaust valve diameter |
1.57" |
| Valve stem diameter |
8mm |
| Valve guides |
Manganese bronze |
| Deck thickness |
5/8" |
| Valve spring diameter |
1.55" / 1.30" |
| Valve spring maximum lift |
0.600" |
| Rocker stud |
3/8" |
| Guideplate |
Hardened steel |
| 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: Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Match with Edelbrock head gasket sets. |
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| Description |
Bare (Single) |
Complete (Single) |
| RPM LT4 195 |
61929 |
61939 |
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Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
| #61939 |
| Valve Lift |
.100" |
.200" |
.300" |
.400" |
.500" |
.600" |
.700" |
| Intake |
65 |
119 |
173 |
255 |
267 |
270 |
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| Exhaust |
54 |
107 |
145 |
181 |
187 |
190 |
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AMC
Small Block
