Has any one sent there carb out to have it worked over and got some ET gain. I was think about sending my carb it is a 8896 HP 1050 to Gary Williams
My Dominator is a BG, but that is just because I got a good deal on it. It is a good carb, though. From what I hear, Pro-Systems is about the best out there, but you will probably pay more. I have also heard good things about Gary Williams. Either way, I would highly recommend it. There is alot of room for improvement in both driveability and ET from the way Holley built them. Have fun.
Larry, here is what I have learned on the modified carb subject. Several years ago, I was running the 8896 and it seemed perfect.A friend of mine had just recieved his brand new 8896 back from Chuck Nuygten(spelling) cost him $500 to have the modifications done and he was told 2-3 tenths over the stock 8896. We did a comparison at the track and found it was worth 2 hundreths at best but it did make my car start and idle better. Not hardly worth $500. I have since went with the 9375 and had it working perfect. I was referred to Ron Anderson by Tom Rix. Ron Anderson seemed very honest about what to expect from his mods on an already well tuned dominator. 2-3 hundreths is what he told me and that is exactly what I saw at the track, for half the price.
I have heard that about some of the carb shops. I agree that most of the time that happens. One counterpoint, though, would be that ANY carb is not a bolt-on deal. Every motor/chassis combo is different. In order to pick up ET you will probably have to tune the air bleeds, and possibly more, but at least the ability to tune the carb is there, which isn't normally possible on most stock Holleys. There's also the issue of quality control leaving Holley's plant vs. a hand built carb, but that's another story. Have fun.
Gary, I have two questions for you. first was there a performance gain in going to the 9375 over the 8896. And with the modifications to the 9375 what was the final gains. over your firs set up.
The main thing with the 9375 is that it needs smaller high speed air bleeds and bigger idle air bleeds since it was orig intended for dual quad setups. I have found that it also needs 37 to 40 squirters rather than the 35s in most cases. Bruce BQUICK 9.96 at 3710 lbs.
Be careful when you say that 9375's were intended for tunnel rams. The original Holley 9375's were intended for tunnel rams. BUT, some of the custom builders, such as BG, have used the 9375 as a starting point to make a very good single carb. The 9375 has annular discharge boosters which create a stronger signal in low flow situations. This helps on a typical Buick that only revs to, say, 6000 or 6500 RPM. BG, and others, start with a 9375 body and install metering plates, etc. calibrated for single carb set-ups. So, you can't make a blanket statement that ALL 9375's are for tunnel rams and need certain mods. Find out what you have first. Just trying to help. Have fun.
Jeff: Tunnel rams? I just said dual quad..... Been talking to a guy in Holley tech about it for some time. He said they sell alot of them and he knows they are going on single setups but often don't work out without mods. I suggested that they put instructions in for single setup but he said "why?....just buy the right carb in the first place". I guess the best bet would be an 8896, then change the boosters over to annular. My 9375 works alot better now than before in all ranges and street use. A tall order for a Holley esp a Dominator! Bruce
OK, Tunnel Ram, Dual Quad, whatever. I think we meant the same thing. :grin: Anyways, I was just pointing out that a BG 9375 is ready to bolt-on to a single 4 bbl application. No mods necessary, except maybe a little fine tuning. You're right, they don't come from Holley that way. That's all. Have fun.
Terrance, my answer to your first question would be no, I didn't see any difference on the timeslips. As for the final gains with the modified 9375, 2-3 hundreths maybe 4. Like I stated before, and was told by Ron Anderson(MARX Carbs), you will not pick up much with modifying a good carb that is tuned for your combination. If the carb is out of whack and not performing like it should, a few mods from any of the above mentioned carb geniouses will make a big difference.
Thanks, Gary I have a chevy friend that just brought a dominator series 8896 that his engine builder told him was to small for his set up. wants to sell it to me for 400 bucks. but I was thinking of holding out for a 9375. because that seems to be the hot ticket. I could get the boosters change in it and still possibly come out ahead. just one more question if the 8896 was running so good why did you change to the 9375??
Terrance, the 8896 was a friends whos car was apart at the time. The modified 8896 was a different friend whos car was not finished yet. When it came time to give the un-modified carb back, I went with the 9375 because of advice/opinions of my machinist and other local racers. If I were in your shoes, I would buy the 8896 and send it to Ron Anderson and have him work it over. The $700 you would have in it is about what you will have in a new, un-modified 9375. If you are not after every hundreth at the track, I would just spend the $400 on the 8896 and tune it for your car.
Thanks, Gary Do you have the number for Ron Anderson. And yes I'm looking for everything I can get 2 to 3 tenths would allow to reach my goal of breaking into the 6s in the 8th mile. I'm currently running in the 7.20s at 96 mph with a 1000 cfm silver claw. In a very mild set up or as Scotty G calls it a BS motor. I'm in Texas home of the big three carb tuners Chuck N, DaVinci and PRC. I called and asked do they modify the bg claw or demon carbs and I though they would never stop cursing They don't like Barry Grant very much.
Maybe Tom Rix can help with the number as I can't find it. You might find it in the back of a National Dragster issue. Marx Carburetion is what to look for. I'll dig some more, though.
I thank the both of you. Sorry I'm just getting back to thank you but I have to share computer time with my 2 year old son and his leap frog videos.
Tuner Dominators On my old stage 2 482ci motor (survived Doug Hecker!), we made 20 dyno pulls at Kittler's Automotive Machine Shop in Bossier City, La (March 2001). They were pretty big fans of Davinci carbs. We started our pulls w/ a stock dominator. Power suddenly fell way off, and we discovered that the little linkage that connects the primaries to the secondaries fell apart. This carb had about 10 passes and was 1 year old. Fortunately, I was using a 4 hole phenolic spacer, so the piece did not fall into the engine. Jeg's sells a "safety plate" for doms, get one if you're not using a 4 hole spacer. They installed one of their own Davinci 1050s. They said it ran about $1,300. It made 674 corrected tq @ 5500, and corrected 766 hp @ 6400. Then I drove over w/ my Gary Williams stock 1050. (The local speed shop sells new Holley carbs built by Gary, who lives here in Mississippi, but they are "stock") They are sold for the same price as Holley, so I think its unlikely that Gary did anything trick. Anyway the stock carb made 669 corrected tq @ 5500, and 760 corrected hp @6400. 5 ft-lbs and 6 hp difference seemed about right according to the dyno operator. Every horsepower at this level is precious, but costly. Hope this helps. Jeff Peoples
Jeff, it's interesting you brought up Gary Williams carbs. I just bought one of his 1150 9377-Dominators last week to replace the 1050 9375 HP-series that I've been running the last several years. PeeGee Scotty got it for me cuz he said that's who they use over at Pat Musi's. Scotty felt that I was maxing out the 1050 and even dyno tuned the new carb for me. BTW......Whattaya mean "survived Doug Hecker" ?? I'll have you know......Oh Well, Forget it!:laugh:
