Back at the start of this year my 85lb dog accidently punted me in the eye. I didn’t realize it until 3 weeks later when I started seeing floaters but he had torn my retina in 2 places. Next thing my retina was detached and I spent 6 weeks staring at the floor waiting for the surgery to heal and the gas bubble they put in my eyeball to hold the retina in place to be absorbed.
Since I was sitting around unable to drive or work on anything I spent some time thinking about what budget mods I could make that would help lower my lap times.
My dyno figures fell short of thier target last year when the motor only made 335hp at 6200 rpm. I had 15-20hp that I could gain amd still be class legal.
The heads, cams, injectors, throttlebody and headers all should support some more rpm. The motor just hit a wall and flat lined to past 7k. At the time the tuner, who has a lot of experience with mod motors mentioned maybe I should swap a stock intake onto the motor instead of the Fox Lake P51. The Fox intake has long narrow runners suited for producing toque in the small stock 4.6 motors. The other thing about the long runner all AL fox intake is it is heavy, close to 40lbs.
I read a few articles on the Victor intake for the 2v mod motors. Most articles said the short high volume runner open plenum intake was a poor match for little street 4.6 mod motors. One article though actually had some dyno graphs and what it seemd to show was that even on a stock 4.6 the intake didn’t fall on its face down low.
Since my 2v is a 94mm bore boss block and I’m displacing 5.0 liters with some decent sized cams and ported heads the intake seemed worth a try. Plus the P51 does work well on mild 4.6 and they still fetch some decent $$ on fleabay.
So tonight off came the porky P51.
On went the Victor and an elbow made for running the Victor on a Mustang.
Even if it doesn’t make any more hp or spin any more rpm I just lost 24lbs off the nose of the car and gained the ability to make a shock tower brace that the P51 wouldn’t allow. I’m also pretty sure near the end of a track session the 40lbs of AL gets plenty of heat soak and the hot intake charge is taking away even more of the little hp I have.
I’m pretty sure I’ll gain 500+ usable rpm on the too end and some hp, how much IDK but any gain plus the weight loss will be a big win.
It will be interesting to see what it does on the dyno and more importanly on the track.
Brian Hobaugh SCCA National Tour June 2014
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