Intake setup for L92's..thoughts..
Dan is right, I actually slowed down with the GMPP. Probably a cam issue. I even spun it 7300+ and it still wasn't as fast.
I ported my L76 intake this time and it pulls much better up top. I plan on doing the FAST intake/tb setup once it comes out.
The L76 unported choked up the car pretty bad above 6400
I ported my L76 intake this time and it pulls much better up top. I plan on doing the FAST intake/tb setup once it comes out.
The L76 unported choked up the car pretty bad above 6400
The whole myth about the L76 petering out at 6,000rpm is a lie. I have seen a dyno graph on an unported one still gaining to 7,000. I personally switched from the L76 to a GMMP single with a sheet-metal elbow, but I'm going with FI. N/A I see no reason to switch.
There is a reason you don't see aftermarket (plastic) intakes for these heads after years and years. Companies haven't been able to make any gains over the stock one. But it seems Fast finally cracked the code-Although I wouldn't hold my breath on that one either. If it's 10hp I wouldn't waste $1,000 on it.
There is a reason you don't see aftermarket (plastic) intakes for these heads after years and years. Companies haven't been able to make any gains over the stock one. But it seems Fast finally cracked the code-Although I wouldn't hold my breath on that one either. If it's 10hp I wouldn't waste $1,000 on it.
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I am running that elbow with my GMPP carb EFI manifold. When we flowed the heads, manifold, and elbow, I can tell you the elbow made no negative efect on the flow bench. It seams to be a very good peice at this time.
