As part of the port work completed on my manifold, the main intake port opening, if you will, was open/ported, to its max. I believe Mike at bwoody did measure it, but I do not recall. Your restricted by the front intake gasket valley unless you rework the entire front opening - which doesn't even look feasible and something I would not attempt nor recommend.
Want to make your existing AFE or AirHammer work with the 90mm without starving it? Buy one of these 2 options and then just cut the CAI where it goes to 4" and use one these adapters.....done. http://intakehoses.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=90B-400X7&Category_Code=9DES2 If clearance is an issue: http://intakehoses.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=90CB40&Category_Code=CHEW
Reply Mark, that was a very complete and well written evaluation of the 90MM ArringtonTB. Any plans on going to the track to best your 12.66? Good luck with it and keep us posted. Rich
6" wide = 2" higher than the 4" pipe....close. There should be 2" available space to the hood. What I think is more important is the design doesn't really seem to promote "smooth" flow if mounted just a few inches from the throttle body. it might be better used somwhere further upstream of the TB. It is a nice looking piece for close quarters. Something to remember if you are designing a complete CAI.
The AFE bumps the hood now. I have one of the redesigned tubes with the flat spot to address that. It still bumps slightly. If you got further away from the radiator towards the throttle body there is more clearance since it's just under the front lip of the hood where it comes down. The other adapter looks like it would be fine.
I thought the AFE was striking the hood closer to the filter and there wasn't an issue near the throttle body.
Great write up Mark. I have a dyno day scheduled for the 28th on my build and we will run with the stock and switch to the 90mm. I will let everyone know the results. I already know the results will be good because the intake I have was made for the 90mm
The final delima is the new fuel tank... It was suppose to be done last week. I'm waiting for the phone call tonight to go pick it up. Its another "Operation get fuel tank out of Ann Arbor" for god's sake!!
That SUCKS... well, since your first investigative win, I have FULL confidence you will prosper. If you need me to assist, you have my number.:drunk:
Folks, Went to the track this evening to make some new runs with the add ons. Folks, I am a little dissappointed and not sure why. My best time to date was 12.66 @ 107.10 (w/track temps @ 67 degrees w/1/2 tank of gas). Adding the ported, polished, coated intake, intake spacers, 180 stat, updated B&G tune, Arrington 90mm TB AND 4" bwoody CAI...... I made four (4) runs this evening. Track temps and conditions = perfect. Temps right at 57 degrees, track was in great condition. Gas tank was again at 1/2 full. Best time was: 12.716 @ 107.50 R/T= .762 60' = 1.834 (I was running consistant 1.7's prior) The other three runs were all very close, the slowest time being: 13.074 @ 109.40. Launch was done with traction off and trans in first (1). I power braked it to about 1500 rpms on some of the runs. Did not seem to make a difference either way. I'm guessing either the tune needs to be dialed in better and/or I lost air velocity - I really don't know. Next up will be the dyno. My oil temps stayed in the range of 188-208.
You may just not need all the added intake air flow. Probably big H/C, stoker, or SC would show more of an increase.
We've been running around for the past week testing out our first throttle body on an inhouse N.A. 426 300C. We've had it down to Cecil County dragway twice, last wednesday and tonight, and ran it at Etown this past Saturday and from what we can tell we've picked up about 2 tenths. That's my assumption. Cecil had bad track prep both times, tonight on brand new tires I could get traction no matter what I did, but she still pulled 11.6's (almost matching this cars best time with a perfect launch on a well prepped track). If crappy runs equal our former bests then this works well. I dyno'd this car today and showed over a 300 rpm shift in peak horsepower, formerly 5800 our hp now peaks at 6100. We had BES port match the intake where the throttle body connects and used the LX AFE Stage 2 intake with it - the rubber coupler will stretch over the 90 without any problems. We just had to replace the clamp. On our next 6.1L manifold we are thinking about also moving the surface back further to alleviate the added thickness of the tb, allowing more room up front. We have found that we have had to add fuel in the 5500 rpm and up range with our 426. Total added peaked at an additional 3%. I will have to go back and dial the adaptives in again with our CMR, since there is an ever so slight change in driveabiltiy. Joshua, HHP
