1471 Littlefield on a SBC

Has any of you built a SBC with a roots supercherger for all out competition alky injection? How much power is available with 23* heads or with what heads?

 

Rick Santos had pretty good luck with his SBC until they made him add weight cause he was kicking butt, and some didn't take to kindly to it

 

Have a Littlefield 1471 hh on a 377 small block with Brodix track 1 heads. Has gone 6.92 at 195 with 22 pounds of boostm in an altered.

 

I've got an all out competetion SBC 410" with 23* heads, only I'm running a 10-71 HH blower. Have been 5.10/144 in the 1/8 at 3100lbs on a true 10" tire

Put together by S&S Rick Santos

As for power, we dyno'd it and it made 1500hp @7000 with 19lbs of boost/ 30* timing, never made a pull past 7k rpm, has WAY more in this beast

 

I had a 375" sbc with 23* AFR heads and a 10 -71 SSI at 12% over that went 4.20 in the 1/8 mile and it was still no where near its full potential.
I only went to a Hemi , from a durability standpoint

 

Thanks for all the input guys. I am thinking more about the sbc now. I need to be able to go high 4's in 1/8 mile @3000 on tt5's.

 

what kind of rules do you have to run?? blower size, od, fuel pump limits, etc

 

Rules or only no screw blowers. Cash is my limit that is why I am looking at 23* heads. They make it fit my budget a lot better. I have a Littlefield 1471 with Birdcatcher.

 

I ran a blown sbc that ran consistent mid to low 3.90's in the 1/8th. My setup was a -12 Brodix head and a Brodix wide rail raised cam block. We used a standard Kobelco 10-71HH at 35% o.d.. We had a Knut injector, Enderle square BV, pretty basic stuff. I believe it was a 4.150 bore. I still consult with the car that currently runs the motor, very competitive setup.

Brandon Booher
NHRA TAD #34

 

If you wanna go high 4's in the 1/8 on a TT5, buy my motor, it will definately get you there... it's for sale turn key, hat to pan, fuel, ignition, drop in hook up headers and go!

 

I was thinking of sleaving my 410 down to 380 for the head gaskets. You guys that are running 4.125+ bore were You running water?
410 cubes -12 brodix heads , 8-71 20 over 6.8's so far at 1950 lbs.
Steve

 

I am at 4.170 right now and run water, had an issue with it last year where water was pushing out of #2 plug hole, but when I got the motor apart everything was perfect, gasket was fine, heads were fine, block was fine.. not sure what happened. Just gonna make sure I seal it up very very well this go around. But in the past prior to the leak last year I haven't had any issues with water.

 

Thanks isc racing, what gasket and sealer? I've tried the soft copper and silicone and the impregnated gaskets, alum heads and oringed iron block on mine. I haven't had water in the cyl. but do push it out the overflow.
Steve

 

We ran .060 gaskets (+/- .020) for tuning. The best gaskets you can get for that are the RCC Coated FlatOut Gaskets. I have several sets of them if you are interested. With that weight and -12 head setup you should be able to hit low 6's no problem, our quickest 1/4 mi. pass was 6.10 @ 221. What crank/rods etc do you have in the motor? What brand of blower? Do you have the down nozzles in your -12's? A great person to talk to about the -12 setup is Rick/George Santos. My dad and I also have lots of experience with the motor, be happy to answer any questions you may have.

*We also ran water through the block and heads, on the -12 the 4/6 and 3/5 exhaust are so close you need to cool them or dropping seats will become common.

Brandon Booher
NHRA TAD #34

 

ignition

Hello Brandon
My name is Pontus from Sweden
Iam running a Santos sbc whith 12 heads and a psi screw blower on top
and i have run 6.71 in a door car whith a terrible first 1/8mile so i think we can go
faster but my question is how much ignition did you run i am at 35 degrees now
but the German team that i bought the engine from tell me that they run it on
38 degrees and they pusch it to the limit and theres best time was 5.8 in the 1/4 mile.
And did you pull some ignition on the top end or ?
Thanks and Best regards to you

 

For us the max seemed to be 37 degrees, after that it'd start welding the plugs into the heads. I would pull 3 degrees out at the 2-3 shift and leave it out for the rest of the run. We had a HH 10-71 Kobelco w/ no mods, with your blower you shouldn't have to run that much timing. We used a MSD 44 Mag and with our blower we likely ran a different cam setup than you. If rules weren't a determining factor, I'd be chilling the methanol to as cold as possible and figure out the gearing so you're going through the lights at 92xx-95xx or so. We used a 2spd. powerglide as well as a 3spd. Lencodrive, always Coan Converters. We were around 1750 car/driver, so the weight disparity is something to take into account.

Brandon Booher
NHRA TAD #34