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Roller Cam Upgrade

Roller Cam Upgrade

Old 04-09-2009, 09:31 PM
  #21  
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Crane 268761
598/610
230/236
114 LSA
4/7 swap

Crane 169621
Same as the 268761 no 4/7 swap



Crane must have messed (misprint) up with the RPM range on the 169621


Part Number: 268761 Grind Number: HR-230/352-2S-14 IG
Engine Identification:
Start Yr. End Yr. Make Cyl Description

Engine Size Configuration


Valve Setting: Intake .000 Exhaust .000 HOT

Lift: Intake @Cam 352 @Valve 598 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 359 @Valve 610
Rocker Arm Ratio 1.70

Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 33.0 BTDC 79.0 ABDC 292.0
Exhaust 84.0 BBDC 34.0 ATDC 298.0

Spring Requirements: Triple Dual Outer Inner
Part Number 99896
Loads Closed 150 LBS @ 1.900 or 1 29/32
Open 454 LBS @ 1.310
Recommended RPM range with matching components
Minimum RPM 1800
Maximum RPM 5800
Valve Float 6400

Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake 6.0 BTDC 44.0 ABDC 109 230.0
Exhaust 57.0 BBDC (1.0) BTDC 119 236.0

Remarks:
FIRING ORDER: 1-8-7-2-6-5-4-3



Part Number: 169621 Grind Number: HR-292-2S-14 IG
Engine Identification:
Start Yr. End Yr. Make Cyl Description
1996 Up CHEVROLET 8 HYD. ROLLER WITH CAST IRON DISTRIBUTOR DRIVE GEAR
Engine Size Configuration
454-502 C.I. V

Valve Setting: Intake .000 Exhaust .000 HOT

Lift: Intake @Cam 352 @Valve 598 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 359 @Valve 610
Rocker Arm Ratio 1.70

Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 33.0 BTDC 79.0 ABDC 292.0
Exhaust 84.0 BBDC 34.0 ATDC 298.0

Spring Requirements: Triple Dual Outer Inner
Part Number 99896
Loads Closed 150 LBS @ 1.900 or 1 29/32
Open 454 LBS @ 1.310
Recommended RPM range with matching components
Minimum RPM 3000
Maximum RPM 6500
Valve Float 6800

Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake 6.0 BTDC 44.0 ABDC 109 230.0
Exhaust 57.0 BBDC (1.0) BTDC 119 236.0
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Old 04-10-2009, 11:15 PM
  #22  
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Are you going to have a Happy Easter or what. Be sure and keep us tuned in regards to your engines new addition.
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Old 04-11-2009, 03:07 PM
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Still missing a couple of parts. The 16 AN Bravo inlet fitting needed a 45deg fitting to clear the engine. I ordered it from Summit and it should be here tuesday. Looks like I will try to shoot for next weekend. I wound up going with most all of Bob's suggestions. I am using the PBM HR lifters (moral), Isky 8205 plus springs and a special timing chain. The timing chain has billit gears and a chain with that has been pre-streched. While I was at it I had my valve covers and timing chain powder coated with a blue "mirror" finnish. They should be done monday.

Last edited by jeffswav; 04-17-2009 at 08:39 AM.
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Old 04-12-2009, 06:55 PM
  #24  
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I am excited for you and hope you continue to keep us posted with the results from running in driveway to clipping across the lake.
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Old 04-12-2009, 06:56 PM
  #25  
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Did you get your springs and lifters from Summit also?
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Old 04-12-2009, 08:16 PM
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I got the Cam, Springs and Timing Chain from RMbuilder. I had a credit with my machine shop and he supplied me with the lifters. I used the PBM premium lifter made by Moral. Bob can put a complete package together at a good price.
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Old 04-16-2009, 06:42 PM
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Ok, I got my Isky springs today, took them to the machine shop and they should be done tomorow. I just hope to get the timing chain tomorow and I will be set for assembly this weekend.
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Old 04-16-2009, 07:05 PM
  #28  
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Glade to see you got a good set of lifters, whats the part # they make a STREET ROLLER LIFTER thats not for use in a marine engine. Those lifters are privite lable and the company that manufactures them perfers the we do not call them Moral. Thats why they have PBM, Isky, Howards on them to name a few. You'll never see the manufactures name on them. Just alittle info. People don't understand that sometimes and they think they were shtted.
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Old 04-16-2009, 07:25 PM
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I used the PBM lifters (morals), Isky 8205 plus springs, PBM 3/8 pushrods. I am reusing the PBM retainers, with new locks. Here is how I plan to adjust endplay. I am going to install the timing cover without the gasket and adjust for a snug fit. Then remove and reinstall the timing cover with the gasket. I took a closer look at the timing chain cover, it seems to be pretty ridged. If I notice a problem with cam walk I will find a way to tie into the bypass crossover.
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Old 04-16-2009, 07:28 PM
  #30  
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Whats the part # of the lifters?
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