Hot Rods If you had to choose a 6x2 setup or a 671 blower?

I like blowers, everybody here knows that. However 6-2 s on ablower, you better be very well skilled at tuning. Blower power plants are a whole different animal!

 

Blower. Guys on this site have suggested 2" drives and for the tight time period covered here they may be right but I will always run 3".

 

2 Inch drive puts less stress on the crank and other parts, also.

 

I was thinking the same thing!

 

6-71

 

I like multiple carb set ups, but there's just something about a well set up blower that just gives me chills! The good kind! You can set one up with low boost for general driving, then if you ever want to get out and play, change the pulley and it becomes a different monster!

 

4-71

 

6-71 for sure. The 2" drive on a 6-71 will take just as much room if you run a 4-71 and unless you find a 4-71 manifold cheap be prepared for a shock. A v-belt drive on a 4-71 might save a bit of room but unless you have machining skills, just like with the 4-71 manifold an old Cragar or new Walden Speed Shop drive is big bucks.
2" stuff hard to find? I bet Gary Dyer can fix you up with 1/2" pitch, 2" stuff in any ratio you want.

 

Remember 12 idle circuits to adjust will be a pain to get right.

 

Well that escalated quickly...grabbed an original edelbrock X1 setup with 6 Ford script Holley 94's

 

Why not both ?

 

Gary Dyer is the man, he built my 471, and his son Bill built the drive. Excellent products, and people.

 

Blower. If not for the performance, for the look alone.

 

Hello,

In our first build of the 283 SBC, it only had an Isky Cam and kit as well as a Weiand manifold for 6 Strombergs. That motor was put together by two teenagers with some skills, but, we were definitely not expert mechanics. We did make some errors, but it went together and we also added a Joe Hunt Vertex Magneto.

The stock Corvette pistons were fine for this range of power. Hedman headers routed the exhaust through tube mufflers. The biggest problem was adjusting those 6 Stromberg carbs to make it run right. it was difficult, but we learned as we went along. we did get some great advice from our local speed shops and hot rod businesses near our house. Once finished, it ran great.

After the final install in the 40 Willys coupe, it fired up after several tries. We initially drove it down the neighborhood streets for about 20 minutes. We did not know how far out the Moon Tank would take us, so we were cautious. The motor ran fine and had plenty of power for this small coupe.

We certainly were happy teenagers and decided that later the next night, we would venture out farther to see the range of the gas tank. The final tally ended up at 12 miles total, so out and about for 6 miles and 6 back home. Cruise night was definitely fun and very exciting.

This motor seemed to run fine for a street coupe and if we had a larger gas tank, could have gone down to Balboa for a nice, long, beach cruise. There was never any overheating or other problems, just a nice drive in a super, hot, car.

But we had other things on our mind, like the weekend drags at Lions. Hooked up to a LaSalle transmission, and a 4:56 Chevy rear axle set up with Bruce slicks, it ran in the mid to low 13’s for the first time out. After a month of racing at Lions, it ran the best of one run at high 12’s, but all of the runs still stayed in the mid 13’s. But, we got our ****s kicked by some of the faster racers in this B/gas cl***.

So, we decided to upgrade to a larger SBC and add a 671 to it. The motor went through a completely new build, specifically for the 671 power. Lower compression Jahns Pistons, ported and polished heads, balanced crank, Howard aluminum flywheel, a new to the market 671 Isky Gilmer Kit and Edlebrock manifold. Included in this build was a cam from Howard Cam Company, specifically ground for supercharged motors. The 6 Strombergs went on top of the 671. Now, it was time to upgrade our build status.

Finally, this new 671 set up for the SBC started and sounded like the big time drag race motors we normally heard at the dragstrip. We were impressed. My brother wanted to immeditately take a run around the block. The power was at least twice as powerful as with the 6 Strombergs and everything seemed to work well, with no overheating. Now, the gas usage had to be calculated again. Somehow it still registered 12 miles total, so we went on a Friday night cruise of the local hangouts. What a sight! We did have to get one fill up in the Moon Tank.

Recently, I met an old high school friend and fellow hot rodder at a drag racers gathering. He remembers our 40 Willys coming into the drive-in lots and leaving everyone questioning the look and sound of the build. He said that it was very impressive because it was not your ordinary build, but a race car for the street cl***es.

Jnaki

If I was to compare which version I would like to drive around, it would have to be the 671 version. But, for long distance, everyday cruising, the 6 Strombergs version would be more reliable, but still powerful. Today, with some modifications to the blower drive, there are many ways to make a 671 powered SBC run well on the streets. So, with that new technology, I would go with the 671 on the SBC.

 

No need to choose, do both. Your going to have to put something on top of that blower.

 

I'm going to disagree that you can't drive a 6x2 long distances. This was after going about 400 miles, then we drove back the next day. Definitely a learning curve and time consuming. 2 things I spent the most time on : Fuel pressure is an issue - it needs to be low. Finding the right pump and regulator is key. And : the bases need to be fairly tight - vacuum wise - 6 leakers and it will never idle down. I got new bases for all 6 after fighting the stockers for a while. No power valves or idle screws in the outer 4. I'd do it again in a heartbeat.

 

Street legal 671/Strombergs 1960 Bones Balogh
Hello,

Ok, here are both (Strombergs on top of the 671 on an SBC) in use October 1960, by the famous Bones Balogh in the Gas Coupes and Sedan cl*** ranks. He was extremely fast and quick. Our 671 with Strombergs was put together in May/June, 1960. The overall look, the custom extra accessories, all looked the same. But, he had a very unique throttle linkage system.

Our motor was put together by a couple of teenagers and for some reason, it ran well in this configuration, after adjusting the Strombergs, of course. It had the power of our old 283 with Strombergs, but for the new 671 addition, crammed in a ton more horsepower in the similar looking package.

On our first drive, the acceleration and power was certainly there and a little scary. The noise was definitely the sound of horsepower. The ride, well, it was thrilling for this young kid.

Jnaki

Memories of that first ride around the block was pretty great. But, that longer cruise around our hot rod, stomping grounds made quite an impression. A great thing for the teenage ego…

Then, to hear an author of a drag racing book, at the Lions Museum opening, say that he saw our car racing well against all others was chilling. He was in the spectator's side bleachers at the far end of the dragstrip on August 13, 1960. He said that our Willys with the 671/Strombergs was the strongest and fastest in the C/Gas cl*** that day/night…winning against other racers by big margins... (until it blew up) Listening to him was a moment to bring back that 57 year old experience again.

 

So cool thanks for sharing!

 

anyone selling a 671 blower top for 6X2 carbs..? (top only)

 

I've been running a 671 blower on a bone stock 69 325 hp 396 with cast flat top pistons and stock heads for 20 years and over 40k miles and have had no problems with it. I run no choke, it runs cool and get's over 15 mpg. I'm running it with a 6 inch gear on top and a 5 inch on the bottom so it's under driven at about 83% to compensate for too much compression and cast pistons. After the pain of the purchase price of the blower goes away, I don't see a down side to it.

 

I would think the learning curve on the blower would be shorter. 6 carbs is exponentially more complex. But, as has been shown, they can be made to work good. As for how long, who knows? Some tinkering may always be required. The whine of the blower may get old after a few miles, you may dig it. As for looks, both are winners. Not a bad problem to have. Best of luck, let us know which way you went.

 

Study these two Hilton built hot rods closely. The Coupe has a 8x2 topped MEL, and the Sedan has a 4-71 Blown Hemi. Choosing the "better" one is akin to Solomon splitting the baby.



I have one of each of these motors in my shop right now. In my case, the Hemi is getting a Rochester 2GC 3x2 setup and going into a '32 Plymouth Sedan Convertible. The MEL is getting the 6-71 treatment and will likely end up in my '51 F-1.

 

Blown trumps naturally aspirated in cool any day...

 

Blower for sure!! Everything else just ****s!! [emoji41][emoji38]


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WhiteDevil - sounds like you are going to run 6-twos - great choice! I ran 6-two Holley 94's on my small block Chevy as you can see from my avatar. But I only ran on the center twos, set up by Charlie Price at Vintage Speed IN FLORIDA. Look at the photo - Charlie does a GREAT job, just SCREAMS nostalgia! Yes, you need to run low fuel pressure, usually no more than 3 psi or you'll flood the bowls. Charlie soldered the fuel inlets on the outside dummies so fuel stays in the lines and the linkage is hooked up so they apprear to be running carbs. Whatever choice you make is yours and CANNOT beat how tough they will look!