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Fast 102, LS3 TB

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Old Apr 26, 2022 | 06:17 PM
  #1  
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Default Fast 102, LS3 TB

I have a possible opportunity to get a FAST 102 with rails and injectors. Two questions:

Will an LS3 92mm throttle body bolt up? I know it's not ideal and won't maximize the potential of the manifold, but want to know if it's an option. Alternatively, is there another 102mm DBW throttle body that will play nice with the GM PCM as I'm not planning on upgrading to an aftermarket ECU and don't want to go DBCable.

Second question: They're being sold with Monster brand 75# injectors. I couldn't find this brand anywhere. The seller says they went out of business. Thoughts?

As always, thanks for your time with some newbie type questions.

-Daniel
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Old Apr 26, 2022 | 06:37 PM
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Check out Nick Williams DBW TB's.
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Old Apr 26, 2022 | 09:28 PM
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The 90mm bolts up. Unless you have something super bad ***, a bigger TB isn’t worth much hp.

If factory ECU, you won’t have proper data with those oddball injectors.
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Old Apr 29, 2022 | 10:56 AM
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Yep, LS3 TB bolts up to a FAST 102 and works fine, have one on mine which is sat on top of a stroked LS2 (gold blade works absolutely fine as a replacement of the LS2 silver blade TB as well)
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