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Username Post: TBI cam opinions 1995 454ss        (Topic#347112)
Posts: 192

Age: 27
Loc: Fargo ND
Reg: 01-25-16
09-12-17 04:04 PM - Post#2707504    

So I dug up this computer controlled cam that's supposed to be stock computer compatible. Any cam experts out here that can give opinions on the specs vs what was stock in the 1995 454 SS TBI? I'm running 32PSI fuel pressure but could up it a little bit if needed to compensate for the cam.

Brand:COMP Cams
Manufacturer's Part Number:56-450-8
Part Type:Camshafts
Product Line:COMP Cams Magnum Hydraulic Roller Camshafts
Summit Racing Part Number:CCA-56-450-8
UPC: 036584063391
Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 1,800-5,000
Intake Duration at 050 inch Lift: 210
Exhaust Duration at 050 inch Lift: 215
Duration at 050 inch Lift: 210 int./215 exh.
Advertised Intake Duration: 266
Advertised Exhaust Duration: 270
Advertised Duration: 266 int./270 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.500 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.500 in.
Valve Lift with Factory Rocker Arm Ratio: 0.500 int./0.500 exh.
Lobe Separation (degrees): 112
Computer-Controlled Compatible: Yes
Grind Number: C6 266HR-12
Valve Springs Required: Yes
Camshaft Manufacturers Description: Works with throttle body and sequential port injection with aftermarket chip. Good low end and mid-range power. Adjustable valvetrain is required.
Quantity: Sold individually.
Notes: For use on balance shaft-equipped engines.
Footnotes: 37 - Adjustable valvetrain required.

1994 T15 Jimmy 4.3LCPI/4L60E 170K 3.42s (DD)
1988 V20 Suburban W/1995 454TBI(32PSI)/4L80E/NP241 CA truck, 125K G80 14SF/ GM10 4.10's
1995 K1500 ECSB 5.7 TBI/4L60E, 3.73s 269K(wifes)
1996 K3500 ECLB DRW 6.5L TD 3.73's 198K (new project)

Valued Contributor
Posts: 3935
Age: 35
Loc: wv
Reg: 08-29-12
09-13-17 09:27 AM - Post#2707560    
    In response to MuddiGGer25

  • MuddiGGer25 Said:
Any cam experts out here that can give opinions on the specs vs what was stock in the 1995 454 SS TBI?

94 was the last year for the 454SS so I'm not really sure what you have.

210°/215° @ .050 and .500/.500 is really small by big block standards. I'm not sure what stock was but it can't be much smaller. I am running a 229°/235° @.050 .589/.601 and it is not high strung by any means. I still pull a trailer with it.


'88 Chevy K3500, aluminum head roller cam 511in³ stroker 10.5:1 compression, 96 NV 4500, 94-98 grille, 305/70-16 (33x12) BF Goodrich KM2s, 91 cluster swap

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