Cummins 4BT
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CUMMINS 4 CYL 4 BT 3.9 Rocker Ratio 1.75/1
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| PROF. I.D. # | Duration @.050 |
Cam Lift |
Valve Lift |
Lobe Sep. |
Description | List Price | |
| STAGE 3 C.343.S |
INT. |
181°
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.280
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.490
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106
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Big Stick - best all around power gains.
Our most popular drop-in cam.
No core required. |
$465 US |
| EXH. |
210°
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.307
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.537
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| STAGE 4 C.346.S |
INT. |
181°
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.280
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.490
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107.5
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**Straight drop in.
No core required.
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$570 US |
| EXH. |
218°
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.323
|
.565
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| STAGE 5 C.349.S |
INT. |
199°
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.296
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.518
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108
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Competition only!
Valve relief required. No core required.
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$639 US |
| EXH. |
218°
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.323
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.565
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All our cams are brand new cast blanks and no return core is required.
TAPPETS: We recommend only COLT CAMS CUSTOM 1.4 diameter lifters = $110.00 US a set.
RETAINER: All our cams are drilled and tapped to accept our custom retainer to keep the gear from walking off. This is not required but highly recommended - $57.00 US
VALVE LASH: All grinds INT .010" EXH: .020" COLD
STOCK CAMS: We do carry brand new stock cams as well - $250.00 US
**NOTE!!!!! When we say our camshaft is a straight drop in, we mean: In almost all cases.
However, due to many contributing variances in an engine: heads planed, block decked, valve recession etc... any cam including stock, should always be checked for clearance before start up!
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Colt Cams |
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