Ok, I bought an 825 Demon last spring and installed it on my new engine. The car started great, ran smooth, but never seemed to have the response I was looking for. Plus I never got good at adjusting the Demon. So, today I picked up my new AED 950 Holley carb. The owner of the shop tried to talk me out of it along with 2 local mechanics. All said it was too big! I was told the Demon flowed 900 and thought another 100 or so would hurt because my engine seemed to handle the Demon with ease. So, what do you guys think? 464 cubes 10.5 CR (balanced and blueprinted) Ported Irons (flowed to support 600 hp) SP1 intake Shorty headers Unilite, 6AL, Blaster coil along with Taylor wires cam: .520/.520, 298 dur. 110 separation TA 1:7 roller rockers 355 gear T400 with Edge 2900 stall New stage 1 fuel pump with stock lines. Sure hope I didn't screw up again.
John, I just finished rebuilding my 464. I also bought an AED 950 after recommendation from their tech dept. The motor fired right up, cam break-in, and a good stiff road break-in. I have only turned up the idle speed screw so far and the carb seems pretty close. Definitely needs to be fine tuned but I'm waiting for warmer weather to do this. Great choice on the AED! It's going to be fun! 464 (10.75:1) Stage 2 TE SP2 T/A's Hemi Destroyer cam (241 dur. @.050 and .541 lift) 1.65 rollers diamond forged pistons stock crank and rods 2,500 Converter (to be replaced in spring) TH400 3.70's in a 9" just over 4,000 lbs. (with me)
No !!! You didn't screw up at all !!! When I switched from a Vac. 750 Holley ( that I was told to use ) to a Holley 950 HP, I gained at least 50 HP. Gained seven tenths in the qtr. Nuff said. You made the wise choice. They need to do their research on Buicks more. John.
John, I have a similar build as the above posts (little more comp) and I'm running a 1000 HP from Holley. Barely had to set the mixtures...runs great! No screw up in my books. Jim:TU:
I upgraded from a Holley 850 to a BG Silver Claw 1000 cfm and haven't looked back since. These engines will use the airflow. Devon
Me too.. Went from the 750qjet to the 4150 HP 1000cfm and gained 6 tenths and 5 mph in the quarter. More air more power!!!! :TU:
I also plan to buy an AED carb after recommendations from Rob Chilenski at Stage1 Performance. Guess I'll just skip the 950 and go with the 1000 HP:Brow:
Glad to hear it! Can't wait to get this thing on there and get my new tranny/converter in. Hopefully this week. Will my stock Stage fuel pump supply it? The local racers love the AED carbs. Many pull them out of the box and just set idle.
950 quickfuel here..runs great..JB built my engine..ported stage 1 heads..228/236 cam..shorty headers..10.3 comp..bigger is better.
You can never go too big on these motors,they love 1000 cfm,thats why the 1000 TQ was so popular for years gary
Nope! Went from a 800 CFM QJet to a 1000 HP Holley. Unbelieveable how much HP small carbs choke off on a Buick. I actually got into an argument with a salesman at Summit. He said he is a dyno operator (so why is he answering the phone at Summit??) and his zillion-horse BBC needed only a 650 CFM Holley. He said there was no way a 600 HP Buick would benefit from a 1000 CFM carb. I tried to explain to him the reasons, but it was falling on deaf ears. I then asked him if he ever dynoed a BBB - of course not. Then just send the *&%@*# carb!
damn parts guys! i kinda had the same problem, i went to local speed shop (read small block chevy shop) and told them that i wanted a 850 cfm carb for my mild bbb as i had a 750 edelbrock carb on it and they told me that the 750 was too much carb for my motor:shock: :shock: :af: :shock: :shock: and tried to sell me a 650. needless to say im still in need of a carb and they have two fresh blackmarks in front of there shop :3gears: buickbert
Hi guys , I'm considering a change also from an Osbourne q-jet .The carb really works well but like everyone else here I'm just looking for more HP. My question is , How well are your q-jets set up prior to the swap and the 5 or 6 tenth gains? My combo is 10.9 cr with TA SE alum. heads .038 over 0 decked TA 310 cam 1.6 Harland sharp rockers 200-4r Trans 2700 stall 390 gears in 9" KB wildcat intake 12.50 @ 108 Thanks for your input, Gary
A well set up Q jet runs very good,after all,the stock eliminator guys in NHRA are going low 11's with one ,but a 950 -1000 carb will gain prolly .2-.3 at most,if someone gains .5-.6 their Q jet was junk to begin with. gary
My Qjet was done by Catlin years ago. No comparison with either the 1000 HP Holley or even a 1000 TQ. I'd guess 40-50 numbers. One of the best bang-for-the-buck bolt-ons in the 475-575 HP range, IMO.
Don't worry about it being to large. A 950 is a 750 main body with an 850 base plate. The factory tappers the bottom of the bore to fit the larger base plate. It will give you the same booster signal as a 750 but allows more air in the motor. Not as big as either a Mighty Demon 850(1000 in race demon) or old holley 850(1000 in the HP series). They will wet flow about 820 cfm, the 950 rating is dry flow. The two rating systems are mix up confusing the matter. You can save some money and make a more effective carb by adding a billet 1.75 base plate to a 750HP. You have to modify either the base plate or body because the idle feed hole doesn't line up. I modify the main body so it can be mounted on either base plate using the 850s gasket. This seems to function better than a tappered 950 on motors which benefit from the fuel sheering edge. Both flow about the same. This is Rehr Morrisons trick they started many years ago. Oh yeah, you should not have to change the jets on your 750 since the air gains are down stream of the venture.
Got the carb on today. With the weather like it is and no insurance currently, I didn't drive far. Just a couple of miles. But, it took fuel great! No way it was hooking up on the Nitto 17" tires today. I do believe it's going to be exactly what I needed. Also, I only set the idle and touched nothing else so far.
