silicone boy Posted December 19, 2003 Share Posted December 19, 2003 Has anyone here actually used the Holley Stealth Ram that Grumpyvette talks about so highly? He found one at Fasterdeals.com that comes in at just over 9" higher than the block. Supposedly, a TPI setup is a hair taller than this, and some of you are using these. Theoretically, then, a modified Stealth Ram should fit, but you never know. I don't want to commit to this if it won't work. An alternative to this would be a TPIS Miniram, but I'm not sure this would be much of an advantage. My current TPI setup includes 58mm throttlebody, larger runners, and is ported, so it flows about as well as a TPI system can. Besides, this is on a turbo setup, so does it matter how much it flows naturally if it is going to be force fed? Quote Link to comment Share on other sites More sharing options...
Dan Juday Posted December 19, 2003 Share Posted December 19, 2003 If it's not much taller than a tpi than I doubt there would be any clearance problems. I have about 2" of hood clearance with my tpi. I am using the JTR crossmember to body spacers but they only give you about 1/2" more hood room. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted December 19, 2003 Share Posted December 19, 2003 I may be one of the few who has run and tested most of the available EFI intakes, TPI both with and without high flow base and runners, the SUPER ram,THE mini ram,the standard single plane intake modified for EFI, and the factory holley EFI single plane intake, and tested them, the STEALTH RAM HAS THE MOST POTENTIAL,OF ANY I TESTED ..PERIOD! and makes excellent power in exactly the right rpm band 3500rpm-6500rpm PLUS for max power useing the 350-406 size sbc Ive tested them on when anything close to the correct cam and compression is used BTW theres even more flow to be had with mild porting to the intake runners, the stock stealthram flow enough air for well over 500hp but mild port work allows it to flow enough air voluum to support close to 600hp heres some data you might use http://www.gmhightechperformance.com/tech/0307htp_holleystealth/ http://www.digitalcorvettes.com/forums/showthread.php?s=&threadid=2826 http://www.crossedflags.com/community/viewtopic.php?t=4411 heres a stealth ram with a custom plenum like I run to fit under my C4 corvettes hood http://www.fasterdeals.com/vette/engine1.jpg BTW heres an EMAIL I GOT LAST WEEK Paul, I just finished installing the Stealth Ram and your custom plenum on my 89 Vette. I always wanted something different when I opened the hood and now I have it. The performance is awesome! I want to thank you for your efforts in making this a reality! I am very happy with your plenum and the end results. Feel free to use me as a reference if you would like. Thanks again for your hard work! John Dwyer Quote Link to comment Share on other sites More sharing options...
dmanzo57 Posted December 19, 2003 Share Posted December 19, 2003 I'll be finding out soon. Santa brought me one... After 40,000 miles on the Q-jet, it's time to try EFI! Don Quote Link to comment Share on other sites More sharing options...
fl327 Posted December 19, 2003 Share Posted December 19, 2003 I'll be finding out soon. Santa brought me one... After 40' date='000 miles on the Q-jet, it's time to try EFI! Don[/quote'] Man you suck! 11 second street car not enough for you or what? very very nice.. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted December 19, 2003 Share Posted December 19, 2003 don,t forget you need the fuel rail assembly and a small dia. HEI type dist. the holley 890-160 is the correct one for a corvette, but any camaro remote coil mount hei small dia. can usually be made to work Quote Link to comment Share on other sites More sharing options...
Dan Juday Posted December 19, 2003 Share Posted December 19, 2003 Don you bad boy! You'll definately be changing rearends now. What type of controller are you going to use? MegaSquirt? Welcome to the '90's. Happy to have you on the EFI team. Quote Link to comment Share on other sites More sharing options...
dmanzo57 Posted December 19, 2003 Share Posted December 19, 2003 Thanks, guys. I'm looking forward to doing the swap. I've got the Stealth Ram fuel rails and FPR, LT1 TB, and 36lb injectors. My current MSD dist should clear the plenum. I still need to get a EFI fuel pump. I'll probably get a Walbro 255lph. I plan to use the MegaSquirt that I've got running on my '78 280Z. I don't expect to gain much HP. I think my current setup is tuned pretty well. This will enable the addition of boost in the future... Don Quote Link to comment Share on other sites More sharing options...
silicone boy Posted December 20, 2003 Author Share Posted December 20, 2003 This will enable the addition of boost in the future... Which brings me to the second part of my question. Does it really matter how good your intake setup is if you are going to force feed it? After all, you could get more CFM's flowing through it by cranking up the boost. By the way, do you like my new avatar or did you like my last one better? I had planned on changing them weekly, but I find it hard to move on to a new avatar when the one I'm using at the time is so yummy Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted December 20, 2003 Share Posted December 20, 2003 yes it maters, how the intake flows! a restricted intake does have a negative net effect on the engines power output compared to a unrestricted intake ,EVEN UNDER BOOST! Quote Link to comment Share on other sites More sharing options...
dmanzo57 Posted January 18, 2004 Share Posted January 18, 2004 I can confirm that the Holley Stealth Ram fits under the stock hood. '72 240Z w/383 ci SBC in JTR position Don Quote Link to comment Share on other sites More sharing options...
mas28O Posted January 18, 2004 Share Posted January 18, 2004 Don how long will the swap take you. Did you dyno your car with the carb? Im sure that you will dyno it with the efi using a WBO2. Quote Link to comment Share on other sites More sharing options...
dmanzo57 Posted January 18, 2004 Share Posted January 18, 2004 With a bit of luck, I'll get it running this weekend. I don't know how long it will take to get it fine tuned. I have never had the car on a dyno. I did manage to run 11.16 @ 122 in the 1/4 mile with the carb. At 2800 lbs, that works out to about 400 RWHP. I hope I can get close to that with the EFI. Don Quote Link to comment Share on other sites More sharing options...
dmanzo57 Posted January 19, 2004 Share Posted January 19, 2004 Getting there... I still have quite a bit of work to do before I can drive it. Don Quote Link to comment Share on other sites More sharing options...
silicone boy Posted January 19, 2004 Author Share Posted January 19, 2004 I can confirm that the Holley Stealth Ram fits under the stock hood. Thanks a whole bunch, Don. Makes me want one for no good reason. Actually, the best reason is that Grumpyvette keeps on telling us how great it is for such a reasonable price. By the way, he does this on every Vette board on the net (see digitalvette.com). I was able to hold off getting one in my mind because I had myself convinced that even a modified one wouldn't fit. Now I see from your picture that it isn't true (nice to know that someone else is stuck with the puke traffic cone orange color that I am). My current setup is a Vic Jr. type manifold set up for fuel injection. I'm sure it would work great, but for some reason, I can't get the Stealth out of my mind. Is there any compelling reason to switch? Quote Link to comment Share on other sites More sharing options...
dmanzo57 Posted January 19, 2004 Share Posted January 19, 2004 I'm sure the Vic JR based FI manifold will out flow the Stealth Ram. This is one of the few times I chose form over function. Don Quote Link to comment Share on other sites More sharing options...
Z-Dreamer Posted January 20, 2004 Share Posted January 20, 2004 Don, I don't know if silicone boy's Jr Vic with FI would flow better than the Holley Stealth. Holley sells a single plane intake with FI called the Commander 950 and tested the Stealth againest it and the Stealth made considerably more power than the 950. So who knows? I can tell you that unlike a carb setup, bigger is better with a FI system when it come to air flow. Sounds like we need Grumpy to chime in. Mark Quote Link to comment Share on other sites More sharing options...
Guest the_dj Posted January 20, 2004 Share Posted January 20, 2004 The commander 950 is the computer (I have one). The intake sold in the kit is just part of the kit. Mine's on a TPI now. Guys...those intakes are soooo sexy. 8) I was always edgy about the fitment. Dmanzo: I already have a TPI setup. Beyond the lower & upper plenums and the fuel rails, what else do I need to do the install? Quote Link to comment Share on other sites More sharing options...
dmanzo57 Posted January 20, 2004 Share Posted January 20, 2004 I already have a TPI setup. Beyond the lower & upper plenums and the fuel rails, what else do I need to do the install? The Stealth Ram seems to have been designed to replace TPI manifolds. It uses a TPI throttle cable bracket and TPI throttle body. I believe the TPI engines use a small cap distributor, which you will need to clear the upper manifold. The fuel fittings are -6 AN with inlet on the left front and return on the right front. I don't know how compatible the water outlets are compared to stock TPI locations. I had a hard time getting the heater hooked up because the water outlet I needed to use was right under the fuel pressure regulator. I had to find a low profile 1/2" pipe elbow to clear the FPR. I got mine running on Monday and took it for a spin. I need to get an air cleaner before I can start driving it more to work on the tuning. Don Quote Link to comment Share on other sites More sharing options...
Guest the_dj Posted January 20, 2004 Share Posted January 20, 2004 You think I could do the whole thing for $1500 including an AFPR, new injectors, and new TB (I have the stock 42mm still)? How close is the stock plenum to the hood? Could I return the plenum and get the Corvette short version if it doesn't fit? What is the price difference if I just get the corvette version, and is there any power difference between the two? I may just get it. Quote Link to comment Share on other sites More sharing options...
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