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LS1 GEN III CHEVROLET PRO-PORT RAW (15° VALVE ANGLE)
A bare, unported version of the Edelbrock/Lingenfelter LS1 head #61969, these heads fit 1997 & later GM
Gen III small-block engines from 4.8L to 6.0L. #619969 includes valve guides only (not installed). |
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| Chamber Size (a) |
Int. Port Dim. (b) |
Exh. Port Dim. (b) |
Valve Sizes in/ex. (c) |
Single |
HIP'd |
| 38cc |
0.82" x 2.80" |
1.41" x 1.02" |
2.08" / 1.64" |
#61989* |
#619869* |
| 38cc |
0.82" x 2.80" |
1.41" x 1.02" |
2.08" / 1.64" |
#61999* |
#619969* |
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VICTOR JR. FOR GM GEN III-IV LS SERIES ENGINES
GMs new L92 and LS7 engines are at the peak of the Gen III pyramid with raised ports and offset rockers, and our new Victor Jr. LS7 Pro-Port Raw head puts these advance characteristics into the hands of professional cylinder head specialists. It has 12.27° valve angles and includes both the L92 and LS7 intake bolt patterns with an intake port that is small enough to be ported for either intake manifold. They accept stock 1.8:1 LS-7 rocker arms and 0.200" longer-than-stock valves, or the spring seats can be sunk for stock valves if desired. Seats and guides are included but not installed. |
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| Description |
HIP'd |
| Victor Jr. LS Series Pro-Port Raw |
#770169* |
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ADDITIONAL SPECS FOR PRO-PORT RAW & SEMI-FINISHED HEADS |
| | Valve Position |
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Intake Pierce Point |
Exhaust Pierce Point |
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| Head |
Valve Angle |
Xiv |
Yiv |
Xev |
Yev |
Spacing |
Valve Seats |
Guides |
| 61989 |
15° |
0.820 |
0.024 |
1.090 |
0.024 |
1.910 |
Installed |
Installed |
| 61999 |
15° |
0.820 |
0.024 |
1.090 |
0.024 |
1.910 |
None |
Installed |
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AMC
Small Block
