DBW Throttle With FAST90 Intake

--------------------------------------------------------------------------------

What size is stock GM Truck DBW TB, 78mm? Does it fit FAST90 intake? What's the other option to run FAST intake in DBW GM Truck 03+?

 

IMO save the money dont buy the intake...it wont help much the gains wont justify the cost

 

You can run an LS2 or LS7 DBW 90mm TB. Just be sure to get the adapter, Speartech carries one and I think DrX does too.

 

I already have heads/cam/ported FAST90/90 on F-body 5.7L engine that will go as whole in the truck. If I put the truck intake/TB it might choke the head/cam plus I will have a ported FAST90/90 doing nothing.

I have F-body accessory drives to use in the truck. To ditch all that because of DBW TB will be a waste.

If the stock DBW TB will fit FAST90 intake, I might end up using it.

 

Ahh I see now...I didnt know you were going to use the tb to compliment whats already done...my bad

 

run an ls2 TB.the 3 bolt 78mm truck tb wont work.you need the one with 4 bolt holes

 

+1 on the ls7 with the drx adapter.

 

Thanks guys. So, it is either LS2/LS7 DBW TB and Drx adapter or putting stock truck intake/DBW TB.

Is it going to hurt power that much with stock truck intake/TB. It's Vindicator Cam and TFS 215 heads. No plan to rev past 6700. So, is it going to be choked with Truck Intake/TB. I might sell the FAST90/90. Some talk is already going with a possible buyer.