Quote:
Originally Posted by dec010974
I read the information on the single pane intake, from Holley's website. Holley claims that the operating rpm range the Holley 300-137 is from 2500-7000. the dual plane intake rpm range is 1500-6500. How does this affect drivability? since my current setup is LQ4, FI, what is your opinion?
|
The dual plane is Holley part #300-130, right? If so, it doesn't have any bosses for injectors. The intake runners are at different heights, so it would be pretty difficult to go MPFI with that intake. GM does make part #19244037, but it's the better part of $500 and I
think it is for rectangle port heads.
With that said, Holley does say the single plane intake (300-137) is for 2500-7000 RPM and they also say it is for displacements of 5.3L and up (not a problem for you, but I have a 4.8). I was worried about 2 things with my setup; 1) The MAF being so close to the TB and 2) The single plane intake. In my case, neither one seems to have made any difference. The 4.8 in my '72 is running a bone stock tune except that the rear o2s, evap, and vats are disabled. It runs and acts just like the 4.8 in my daily driver 2012 Silverado.