My Dad and I are looking in either a big block in his 67 cuda or keep the 340 and add a supercharger.. guys with pro chargers or anyother type of supercharge please speak up.. I'm know theres alot out there so some feed back from you guys running them would be great... Thanks..

a procharger sounds good!
how about some more info on use,HP goal.

Its a street car frist and strip second.. Looking for a good number at the track say in the 11s and still be able drive it..

that sounds like fun.the more boosted cars the better.[mopars]
do you have aluminum heads?even with boost more flow is more HP.

keep in mind that cylinder head seal can be a problem on the small blocks with too much compression or boost. Just take the right precautions and you may be fine. If you just want to run 11's I wouldn't waste the money.

For right now its just a good rebuilt 340.. 10.1 pistons with stock heads. We are planing on building a stroker small block for it if we keep it and don't go big block. We have 5 cars and 4 are big blocks so we're just looking at doing something different..
I like the Idea of the small block. You have so much more room and with the parts out there I dont think that a low 11 or heck even a high 10 second street small block is out of the question..

Come on guys there's got to be more running them than this.. just like to here real world experience... Thanks..

there are some SBguys running boost around here.give'm some time.

Have you read this thread?

https://board.moparts.org/ubbthreads/show...e=0&fpart=1

A supercharger (though cool) is way overkill for an 11 second or high 10sec small block. They'll do that on pump gas with Edelbrock heads.

I would think a healthy N/A stroker 408+ would get you in the 11's with a well thought out suspension as well....

Rickster

I dont doubt that a 408 would get us there.. He's really leaning towards the supercharger.. If it goes faster so be it, thats not a big concern.. dads 62 and I think he just wants a supercharger.. I tried to give him the old 440 that was in the duster it was running 10.90 on the street but he real wants the superchager... just looking for opinions on which would be better suited for street/strip and for later build up to a 408 with eddie heads and all the good stuff.. thanks though keep it coming please.. we are both pretty new to the small block world. thanks..

a mid .550 lift cam RB will run smoother than a SB with same and have more TQ.i would think if all the rb needed was rods and pistons it would be cheaper than the sb.good luck and have fun.

You can make alot of useless power with a supercharger. A buddy of mine and I built a
procharged mustang(I know), its a 347 with a d1sc
and it made 618 HP@5800, 713TQ@3900 on pump gas.
Its very entertaining to drive but in hindsight
he wishes we had just built a big inch engine with a little juice. Its not a bad car but you dont just jump in and go without an eye on the gauges and lap top.

If your going for the stealth street scene with a under the hood centrifugal you should convert it o EFI and add a intercoler (BTW, you will probally need a license and a chassis certication with that package ) As already said it is not hard to make a N/A small block run in the elevens with mostly good stock parts Low elevens cost a little more on the engine, wheels, tires and the chassis

Centrifugal supercharger is a good idea for a street car if setup right. A supercharger allows you to keep the engine build mild while still putting down a good 1/4 mile time. You can run mild compression and a mild cam so you don't have to run a high static CR and a big cam with a lot of overlap. Should make for a very street friendly car.

FWIW I bought a used paxton supercharger a while back and plan on using it on my BB. If you pick and choose your parts carefully it can be done for cheaper than a full engine rebuild. That means fabbing everything yourself. It will be fun and different when it's done, although the HP level I'll get will probably be near the same I could have gotten with a more aggressive cam, more head flow and a higher CR.

If it is to be driven on the street and still have good power. There is no replacement for boost. I have a mild 400 engine with a cam timing of only 224*. I am no tuner and have turned 12.30s with a full size 1/2 ton and 4-5 lbs of boost at 4000' It drives great, gives decent fuel milage, starts instantly and idles smooth. Pretty difficult to do with a N/A engine. I know only 12.30s but elevation tuning, low boost and 4000+ lbs kinda hurt me. Guys running similar combos in florida run much faster.

My 340 (non stroker} has gone 11.17@121 street tires,mufflers,3890 lbs. Home ported iron heads,converted 4 BRL manifold,240@.050 cam. The blower is old and worn. I run 12psi@7.9-1 compression. Have driven over250 miles at a crack. I've run this combo since 1985.
Doug

Boost is a wonderfull thing!! I wish I went to boost 20 years sooner If I don't tip in the secondaries,I get almost 10mpg.Tips the scales @3850w/driver.13% under driven,goes into the 9's on pump gas and gets driven well over 3000 miles a year!

im building a supercharged 340 for my duster now and its alitle bit of a challange but i do realy think its worth it when its all said and done, think my junk will run high 10s without alot of trouble if it will ever hook up and i can keep it from breaking drivelineparts! biggest challange with a blown smallblock from what i have seen so farBDS wish is 936.36$ so its a is that there is no intake manifolds except lot of money or you will have to build your own, that is unless your going for a centrifugal supercharger!
please keep us updated on whats happening,always intersesting to learn more from others

I'm running a D1-SC on a 408 low deck, cnc ported e-heads, hyd roller cam, 8.0 to 1 compression, blow-thru carb, 4-speed with a 3.73 gear dana.........all under the hood in a 67 belvedere wagon. I love the power. Docile to drive, until the 17 psi of boost comes on. Yes, I have two much boost, time to change the pulley.