4.6 cam 97 D-90 ? - Defender Source
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  #1  
Old November 10th, 2011, 02:42 PM
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JORGE ESPINOZA
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4.6 cam 97 D-90 ?

I need some advice on what cam to use for a 97 D-90 being refitted with 4.6 . I contacted D&D but they only sell the complete kit . I have most of the parts included in the kit already . I'll continue to use the current Gems system and possibly put a supercharger on as well . What Crower cam or other cam should I use ?
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  #2  
Old November 10th, 2011, 03:46 PM
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Daniel Chapman
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On a 1997 GEMs truck, you cannot fit an off the shelf Crower cam. The reason you have to buy the kit of D&D is because his kit makes everything fit. In other words, you can't buy his cam only and use a stock timing set. It will not work.

If you're unwilling to pay for the kit, then you're stuck with either a stock 4.0 or 4.6 cam.

Likewise, if you're too cheap to buy the cam kit, you'll never be able to afford the supercharger and all the bits to go along with it. The cam kit is like $450.00. A supercharger and all the bits is several thousand dollars.
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Old November 10th, 2011, 04:21 PM
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When I though the 4.6 in my 101 ( I switched to a single Edelbrock intake and carburetor (not gems obviously) but the cam designed for it is # 50229 and lifters should always be replaced at the same time are # 66050 spring and retainer kit # 54150 Crowler lists as Buick 215
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  #4  
Old November 10th, 2011, 04:29 PM
dchapman
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Daniel Chapman
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Originally Posted by Chris Velardi View Post
When I though the 4.6 in my 101 ( I switched to a single Edelbrock intake and carburetor (not gems obviously) but the cam designed for it is # 50229 and lifters should always be replaced at the same time are # 66050 spring and retainer kit # 54150 Crowler lists as Buick 215
That cam, as is, will not work in a GEMs engine. It has to be modified (end has to be cut off). Even if you cut the cam yourself, the stock timing cogs will not work. You need a plate (as pictured) fixed to the timing cog to get the timing correct on the sensor.

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