Testimonials

My carburetor arrived on time and in great shape, Carb bolted right in no problems, still needs minor tweaking. Overall I am extremely happy with SMI, and I wanted to thank you for your services. I will refer you to anyone who is looking for good quality parts. Thanks again, Zack
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Sean- As you remember my car 3450lbs. 408 cu. in. c4 with 4000 stall. I went to the track made (3) passes including the 120 mile round trip and I averaged 14MPG and the car ran 10.96 ET at 123 MPH. Thanks again, Troy
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Hello Sean, I just want to say thanks for making my 65′ Tripower work like a champ. For those with a tripower, SMI certainly knows their way around this set up. I drove (more like limped) my car to his shop, A few days later and a laundry list of discovered problems, he had it…
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In late February, I received and installed your Rochester Quadrajet Stage 2 after rebuilding the 350 in my 1980 Camaro Z28. It ran awesome right out of the box. The only adjustment I made to it was to slightly increase the idle speed. There’s no stumble or hesitation when I step on it; the metering,…
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Also,Sean Murphy from SMI out of CA thats a pro q-jet restorer/carb tuner set my original #’s matching 7029201 q-jet that i finally had restored/replated/rebuilt after 30 yrs with you guessed it AX sec rods along with 72 prim jets & 45B prim rods which is just where i would have set it up for…
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Sean, I installed the Carb you sent and a K&N; airfilter with open chrome assembly. THE TRUCK RUNS AWESOME! Next the Headers and True dual exhaust! I just wanted to thank you for the quick delivery and a really great quadrajet carb. It made a huge difference and I am so HAPPY! Have a great…
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I recently purchased one of your stage2 Q-jet?s. I have been very pleased with its performance. It ran great right out of the box. Thanks for providing a quality product. I will recommend your business to other enthusiasts.
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dear sean i just thought i woould drop you a email to let you know that i was very pleased with the new carb i got from you guys last friday. i put it on the car sat. it fired right up with very little adjustment, ran great to bad you have to cover it…
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8/10/07 Ranvette I found the perfect set up for me was a factory cast iron semi high rise, SMI Q jet with electric Choke and a 1/2 inch spacer on top of the carb. This works perfect with the stock cowl Induction air cleaner. It puts it right at the perfect height. You can?t beat…
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Mr. Murphy, Thank you for the carburetor, I received it Monday (I believe it was) and just got done putting it on today. My truck has never run like it does now since I put the 454 in it. When I first put it in back in 98, I bought a new 750 Edelbrock for…
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6/20/07 Nolimitpkr Qjets are cool carbs. I have a mild 383 and I was able to break into the 13’s with a Qjet, which I am kind of proud of. Especially with 3.08 gears, and only a 2100 rpm stall. If you guys have any inclination of street driving go with the Qjet, great performance…
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Coloradok5.com- 3/19/2006 Noahrob OK, so we did some recon this weekend, and here is what I have learned…The qJet is infinitely better than the Carter I had before. On hills that I used to stutter out on, the truck ran strong. I finally got it to stall out when I accidentally got pinned with my…
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Reccomendation Letter- After Almost 50 years of working on all types of vehicles from gas golf carts, family cars and supercharged show and drag strip cars. I want you to know about the best carburetor man and company I have ever seen or come across. Sean Murphy is the best you will ever find and…
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Dear Sean, I would like to take a minute to Thank You for such great service. I received my carb on time and your company then express mailed the bolts and fittings, I bolted the carb up and adjusted my linkage, turned on my fuel pump, and it fired instantly. I adjusted idle mixture slightly…
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Dear Sean, I just wanted to thank you for the modifications you made on my carburetor for my Chevelle and the tune-up. The car runs great and I am really enjoying it. Sincerely, Mark Ben 1970 Chevelle 454
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Hello Sean, I received my Qjet last friday and installation was easy, no problems at all. I fitted the pressure regulator with an in line filter between it and the carb, switched on the pump, waited a few seconds for the carb to fill up, two pumps of the pedal and it fired up instantly.…
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Sean, I just wanted to get back to you and tell what a wonderful job you did on my carburetor. I recieved it and the finish was awsome. I installed the carb on my car and it fired up and idled great (hardley any adjusting done) Took it to a car show and it ran…
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Sean, I just thought I would follow up, as promised, with the results of my Rhoads lifter installation, and how closely matched your rochester carb was. Before, I was getting roughly 10″ of vacuum at idle, and both you and I predicted that the Rhoads lifters should increase that by 3 or 4 inches…thus, you…
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Good day, I received the quadrajet carb last week and I thought I would give you some feedback on the results. First, let me say that it?s almost a shame to cover up such a beautiful carb with a large air cleaner. High marks for appearance. Second, the divorced choke works perfectly. I had to…
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Sean, I wanted to let you know how happy I am with the performance of the Stage 2 Q-jet I purchased from SMI. It is better than any brand new carb I?ve ever dealt with. The only thing I adjusted was lowering idle about 100 rpm. Everything else is right on. No miss, stumble, or…
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Hey Sean, Just wanted to let you know that the 750 quadrajet you sold me performs AWESOME. If you remember, I installed it on a moderately built 383 small block for my 1986 3/4 Ton Suburban 4WD (not a light vehicle to say the least). It has 4.11’s with 37″ Goodyear MTR’s and you can…
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Sean, I just wanted to drop you a line and thank you for doing an awesome job on the 1986 monte ss electronic q-jet….. I just took it out of the box and bolted it on, and it started right up and idled without any adjustment…… The 4 bbl. opens without any bog or hesitation,…
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My new Qjet runs awesome! I can?t believe how much better it runs in every way. I didn?t know there was anything wrong with my old one, until I drove it with this new one. THANKS!
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Sean, you were absolutely right in that no adjustment was necessary. (duh) Just finished a 1,200 mile round trip and the car ran flawlessly. Thanks again for a great product.
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Sean, Just wanted to let you know I received the carband am very happy with your product. You were absolutely right in that no adjustment was necessary. (duh) Just finished a 1,200 mile round trip and the car ran flawlessly. Thanks again for a great product. Greg
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Sean- Here are some pics of the car. The carb works great now a lot better than that piece in the pics!!!
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Hello Sean, Last week I’ve received my carb and it looked very fine, no damages from transportation or enything else. After organizing all necessary parts I swapped the intake and installed the Q-Jet. It is functioning very well ! Thank’s for the good quality of work ! Meanwhile I also managed to get a good…
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Sean! Special thanks for that stage 2 Quadrajet you shipped to me in Florida a while back. It idles well, throttle response is perfect, no bogs, no stumbles, it is all I expected it to be. Thanks again.
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Dear Mr. Murphy, I wanted to let you know that I am 200% satisfied with my carb since it returned from your shop. It made a remarkable difference in the truck. Thank you for your service and expertise.
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Sean, I just wanted to let you know my car runs better than ever before. It solved all of my problems. Thanks for the great product. Dave 1967 GTO
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Hi Sean, I just got back from picking my car up after having your carb installed on it. It is a 1988 Monte Carlo. It has the stock L69 305 H.O. Engine with an Edlebrock manifold, TES headers, Dynomax mufflers and an open element K&N; air filter. Before your carb was installed the car ran…
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Sean, Thanks for the help on checking our carb on the Red 442 we readjusted the timing and carb,everything runs great now, thanks. I recieved the carb for our yellow 442 and will got it installed.It changed the way the yellow one ran. Your service has been wonderful. We now have your carbs on all…
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Sean, Just a note to let you know that after a year sitting on the shelf and saying to myself that I need to install it, I finally did. I installed the Q-jet you had built for my truck a year ago and WOW. My first trip pulling my 5th wheel was great. I went…
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Hi Sean, just wanted to let you know my carb showed up today and it looks amazing, the visual restoration you did on it is perfectly detailed. I can’t wait to get it bolted on. Thanks again, Chris Williams
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Sean, I received the carb and got it installed this weekend. It runs great. Thanks. Bruce
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2/2/08 Brian Lewis Call Sean Murphy at Sean Murphy Inductions He’ll custom build a stage 2 quadrajet specifically jetted/metered for your engine/drive train combo, it will run excellent right out of the box, way better than any box carb from Summit. Sean Murphy use to be a senior at Jet Performance until he opened his…
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2/21/08 72BB Nova I would look into a Q-jet. Sean at SMI did one for me about 4 years ago and it was a great running carb. Replaced a 750 Eddy and there was absolutely no comparison between the two. Throttle response was very good and was very reliable. This was on a 383 with…
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71454Chevelle Anthony, It’s hard to beat a well tuned Q-Jet on a mild street small block. If it were me I’d send your Qjet to Sean at SMI and have him do his “Magic” to it. He will total go through your carb and “tune it” specifically to your car / setup. I had Sean…
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Sean- As you remember my car 3450lbs. 408 cu. in. c4 with 4000 stall. I went to the track made (3) passes including the 120 mile round trip and I averaged 14MPG and the car ran 10.96 ET at 123 MPH. Thanks again, Troy
read more

As far as my experience with SMI and the stage 1 Holley 4412 carb I ordered, I couldn?t be happier. I chose SMI because I wanted a carb built to my engine not just a one size fits all rebuild. When I called and talked to you about some questions I had concerning purchasing one,…
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Sean I’ve been in the Middle East for the past 6 months. Got back last week. I meant to contact you after the end of the race season last year, but a lot of things started happening pretty fast last September. Our Colorado Hill climb Association Sportsman Division car with your massaged 4412 too the…
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Sean, My name is Rob Maule, I bought a Quadrajet from you a few months ago for my dirt street stock. I built this car new last year, and it has always been a top 7 car, I optioned to try one of your Quadrajets instead of my Holley 4412, and the second night out…
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Hi I have run your 4412 2-barrel on my UMP street car this year and won 50% of the races I ran! (7 out of 14 features and 13 of the heat races on a limited schedule). We are moving to the C.A.R.S. crate late model series next year and in our area the Willy?s…
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Sean, I put your carb on last week and without doing anything else to the car I was .2 tenths faster and .2 tenths is a lot when you are running a � mile track. Instead of being one of the fastest I?m now the car to beat, Thanks. Randy Frasure   Back To Testimonials
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Hey, Sean Excellent workmanship on the carb and quick turn-around. We had a Holley 830 modified to a stage 3 and we picked up .28 seconds in the 1/8 mile. We are sending more customers your way! Sincerely, Mike Jones   Back To Testimonials
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Winners circle! Won our first race in style, thanks for an awesome carb!   Back To Testimonials
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Dear Sean, I just wanted to thank you for the modifications you made on my carburetor for my Chevelle and the tune-up. The car runs great and I am really enjoying it. Sincerely, Mark Ben 1970 Chevelle 454   Back To Testimonials

Dear Sean Murphy: It is with great pleasure that I tell you your carburetor performed beautifully. Right out of the box. I wish I could tell you we won however 6th place at Thompson International Speedway at their biggest race of the year is not bad and without ever fussing with the carburetor. I am…
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Sean, I recently had you work on my Holley 4412 500cfm carburetor. I?d like to share with you my experience with your great carb work. I run in the street stock class, which requires a stock dimension carburetor. I build the race car and hire a driver who supplies the motor. We both have at…
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1) B-Mod 360 Mod 15 wins 1- 2nd place 2- 3rd place 2- DNF?s Track championship at Echo Valley Speedway 2) USRA Stock Car 2 Wins $10,000 Stockcar Shootout Oskaloosa 76 Cars Started 24th finished 6th 3) 3rd in points at Cresco Speedway Thank you for such a great out of the box product. You?ve…
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Sean- Here are some pics of the car. The carb works great now a lot better than that piece in the pics!!!   Back To Testimonials
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Our race team has been using sean’s skills since 1993 we have run on about 12 different tracks all over illinois indiana and michigan have won everywhere we run we run enduro’s and street stocks have won 2 championships at raceway park in blue island illinois in 2000 and at illiana motorspeedway in 2004 wolfracing…
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1. 5 feature wins on the 4/10 mile Hi Bank Asphalt 2. Track Qualifier Record Holder 15.24 seconds 4/10 mile 3. Finished 2nd for the season only 4 points to tie and 5 to win the championship 4. All machining performed by our students. 5. Runs well at track speeds with your SMI CARB Thanks!…
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I do not need any information, but you have to hear about the most recent race with your carb installed. Started 3rd took the lead on lap 3 a caution on lap 5 upon the restart the 2nd place car cut our tire down. We had to go to the pits for a new left…
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Brian Lewis Call Sean Murphy at Sean Murphy Inductions He’ll custom build a stage 2 quadrajet specifically jetted/metered for your engine/drive train combo, it will run excellent right out of the box, way better than any box carb from Summit. Sean Murphy use to be a senior at Jet Performance until he opened his own…
read more