Vortec350ss 2005 Sierra Denali - Forged 370 and cog driven TVS2300
Nov 4, 2015 | 05:41 PM
#582
You cannot exceed the bore of the throttle blade so no. Unless you changed the blade also, and maybe the shaft.
Nov 4, 2015 | 06:03 PM
#583
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I know a new blade would be needed, where I was going is there enough meat on the casting to go 102 and would the TB motor be strong enough to hold the bigger blade open
Nov 11, 2015 | 09:31 AM
#588
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Joined: Feb 2006
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From: South Shore, MA
Finally had it out for a test and the belt does not hit the intake tube as far as I can tell, so that's great.
The tube also really helped my loss of boost, but its still there to a much smaller extent. I think this is in large part due to the 90mm throttle body at this point.
Next on the project list may involve being forced to upgrade to a return style fuel system... seems with minimal pressure drop in the returneless system I run out of injector. As soon as I go WOT fuel pressure drops to about 50PSI and stays there. At 15PSI manifold pressure that means my injectors feel like they are only getting 35# of fuel pressure. At that level they can really only handle 700 HP. Obviously meth helps that equation, but I still go lean fairly early despite short shifting.
I think my best bet to maximize my 83# injectors and the single 450 I will need a base pressure of 50#, increasing to 65-67 at full boost. At 65PSI the 450 should flow 368 LPH, and at 95% IDC my injectors can flow 365LPH. Enough for nearly 850HP letting meth take me the rest of the way there... wherever 'there' is.
The tube also really helped my loss of boost, but its still there to a much smaller extent. I think this is in large part due to the 90mm throttle body at this point.
Next on the project list may involve being forced to upgrade to a return style fuel system... seems with minimal pressure drop in the returneless system I run out of injector. As soon as I go WOT fuel pressure drops to about 50PSI and stays there. At 15PSI manifold pressure that means my injectors feel like they are only getting 35# of fuel pressure. At that level they can really only handle 700 HP. Obviously meth helps that equation, but I still go lean fairly early despite short shifting.
I think my best bet to maximize my 83# injectors and the single 450 I will need a base pressure of 50#, increasing to 65-67 at full boost. At 65PSI the 450 should flow 368 LPH, and at 95% IDC my injectors can flow 365LPH. Enough for nearly 850HP letting meth take me the rest of the way there... wherever 'there' is.