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.
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, you?re over the phone service sold me on it instantly. My satisfaction with the purchase continued when the carburetor arrived even quicker than I expected the carb arrived on a race day and we made the decision to bolt it on for that night?s race. Now up to this point in my racing career I had never won a feature event in my class, which is a Chevy 350 powered superstock running on 3/8 dirt tracks. I was happy with the performance of the carb in the heat race, but decided to change jets by a size. When we checked the plugs after the heat and the feature race I had never had such an even looking set of plugs and the carb and the plugs responded to even the slightest jet change. When feature time came the track had dried up a bit and that is when the money I spent became worth every dollar. The throttle response and exceptionally smooth power band this carb provided was perfect. I could not have asked for more. That night the SMI carb helped me walk away with my first feature win. The only thing that I regret is not ordering one sooner. I have already told several fellow drivers that they need to try my carb as soon as the snow is off the ground. So thank you once again for an excellent product and the quick tech advice response.
Last summer I ordered a 4412 carb from you and had excellent luck with it. Actually, the first night it was on I won my first feature race.
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 Championship?????.. I podiumed three of six races. I love that carburetor!!!!!! I would be honored if you used the following testimonial.
My name is Tom Wells.. In the spring of 2002 I purchased a race-ready Sportsman Division car to compete that year in the Colorado Hill Climb Association. We have 7 races a year all over Colorado. We race on public dirt roads to peaks up to 14,000 ft (for more info go to: chcaracing.com). The car I own is a 1978 Camero (body and front -stub, anyway), 12 bolt w/536 gears, Maton Posi, race prepped 350 TH with 2200 stall, 355 cubes, 13:1, solid cam race ported cast-iron heads, MSD fire, Weiand Team G,.
Class rules mandate a Holly 4412 500 cfm 2bbl, NO MODIFICATIONS ALLOWED! The car ran all right once you got your foot into it at about 3500 rpm. The motor would not idle below 1000 rpm and would not idle in gear. It was a nightmare to get it on and off a trailer. On a good rise or bump, the motor would hick-up, (fuel slosh I figure) On throttle tip-in from idle, the motor would always stumble until about 3500 rpm. Talk about loosing a lot of time trying to come off a corner. I never could get the correct pump shot, tried all different combinations of pump-cams, diaphragms, and squirters. We finished Top-Half that season 6th of 14.
About this time last year as we were getting the car ready for the upcoming season. I am flipping through an issue of Chevy High Performance and see this ad for an outfit in California that modifies carbs. What particularly caught my attention were the race legal 2bbls. So right there I called the number and got a guy named Sean Murphy on the phone. I explained my woes and what we were doing out here. I needed someone who could prep a carb for this unique type of racing that I do, 2bbl, high compression, (most 2bbl race engines are limited to flat-top pistons), high altitude, lots of slow down and speed up. He got the picture. He immediately was asking questions about our Tech inspection procedures and formulating ideas. That week I mailed him my stock carburetor and motor specs.
I did not even recognize my carburetor when I got it back. It was mine, but it looked like it just came out of the box from Holly. The list of modifications Sean said he performed was extensive, most of which I do not understand. 15 – 20 horsepower increase, and guaranteed to pass tech was what I did and do understand.
The car did not run lik the old one either. The new engine fired and idled right off the bat with the jets that Sean said to start with. With a couple turns of the mixture screws the engine settled into a 850 rpm rumble. Dropping it into gear and the car rumppity-rumped at a beautiful 750 rpms. Starts stone cold with three pumps of the pedal, No more having to rev it up and slamming it into gear to get it to move. We can actually drive it on and off the trailer! No more stumble when I stab it off-idle. When I hit the gas it goes! The hick-up is gone. Most importantly the engine likes a much richer jet to keep the plugs right, we all know what that means?.
When the dust cleared in the Sportsman Division last year, we had the championship. I rolled the car off the mountain the first two races, but hammered out the whore bunglers and podiumed the last three races winning the season closer in Victor, Colorado.
CHCA Team 69’s wants to thank Sean Murphy, who we know had a major part in our 2003 Campionship season.
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 I had a clean sweep. I won both the heat and feature by a straightaway. I would like to thank you for making such a quality product, I am amazed at the consistancy of this carb.
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 carb package is what everyone is using but I had such success with your carb I wanted to know if your company makes a package with your crate 650?s for the 604 crate motor. Thanks.
Richie Crenshaw #85
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.
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.
1970 Chevelle 454
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 very happy that I chose yours. Great Job!
Thank you again.
John P. Murray