LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Diff in SBC and LT1 solid roller

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Old Nov 7, 2006 | 08:28 PM
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Default Diff in SBC and LT1 solid roller

As the topic says, what changes were made to the LT1 block/ cam? Can you run a SBC solid roller in an LT1, along with the needed valve train parts?
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Old Nov 7, 2006 | 10:31 PM
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Originally Posted by foggedz
As the topic says, what changes were made to the LT1 block/ cam? Can you run a SBC solid roller in an LT1, along with the needed valve train parts?
Yes, the valvetrain components are interchangeable. The only thing that needs to change is the cam gear dowel pin depth on the end of the camshaft. I'm not sure which way it needs to go, I think on the LT1 application the pin needs to be 1/2 in. or so long, whereas SBC is like 3/8 of an inch. Don't hold me to that though you need to find out for sure.
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Old Nov 7, 2006 | 11:30 PM
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The LT1 cam will not have a distributor gear
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Old Nov 8, 2006 | 01:12 AM
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Yes it will.
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Old Nov 8, 2006 | 01:47 AM
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Originally Posted by fergymoto
Yes it will.
yep yep...
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Old Nov 8, 2006 | 02:16 AM
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Yea, it has the gear. I'm sitting right next to an LT1 cam
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Old Nov 8, 2006 | 06:00 AM
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The sbc cam were 2 types, hydraulic flat and hydraulic roller. They both have different cam gear bolts patterns. Also the hydraulic roller cams had a ridge on the cam face for the retaining plate. Also 95-97 LT1 cams had deeper and bigger opti-shaft hole in the center of the cam.
The distributer gear is there and used to drive the oil pump.
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Old Nov 8, 2006 | 06:39 AM
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removed

Last edited by JasonShort; Nov 8, 2006 at 07:51 AM. Reason: unclear content, no point
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Old Nov 8, 2006 | 03:02 PM
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whats the point of the LT1 cam having a distributor gear if the LT1 doesnt have the distributor out back, it has the opti mounted up front?

Is it just me or am I missing something
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Old Nov 8, 2006 | 03:15 PM
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It drives the oil pump.
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Old Nov 8, 2006 | 03:16 PM
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Originally Posted by Captainofiron
whats the point of the LT1 cam having a distributor gear if the LT1 doesnt have the distributor out back, it has the opti mounted up front?

Is it just me or am I missing something
To drive the oil pump
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Old Nov 8, 2006 | 06:23 PM
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Ok Ok I feel stupid ha
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Old Nov 9, 2006 | 01:44 AM
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The lifters are different for a late model block as well.
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Old Nov 9, 2006 | 09:17 AM
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Originally Posted by Turbo_6
The lifters are different for a late model block as well.
What is different about them? What years are/were the same? Are you talking about SBC and LS1 lifters being different?
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Old Nov 14, 2006 | 08:42 AM
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Camshaft Timing gear bolt pattern is different than the earlier pre 86 engines. What would you do about the water pump drive? I know the intake could be drilled for a regular distributor.
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Old Nov 14, 2006 | 09:06 AM
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lifters for the HR cams are 'taller' than the old ones.
This can be handled in different ways. One is to get the newer SR lifters that are taller to clear the lifter bosses on the LT1 block. Another option is to have the lifter bosses machined down to accept the 'older' SR lifters that are much cheaper than the newer SR set ups.
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