Bassemaa93

Hi guys, anyone here is running a supercharger on his '73-'77 442 ?? Please post some pictures to see how it looks on the car. I have a 1976 442 455 that I am thinking of putting a superchage on. Thanks

MR73OLDS

WOW NO ONE WHANTS TO SHARE LATE A-Body supercharged stories. I am In the middle of a 455 build now I will work on some pics soon

wr1970

What /why are you looking to go this direction. Is it for racing or street use.

70cutty

It's not that nobody wants to share it's the fact that there are only handful supercharged 455's.
I believe it's because the limits of the block can be reached just fine NA.

wr1970

Dick miller has a add on ROP in for sale forum a procharged 496 olds engine. He also has a twin turbo 496 olds engine. My thoughts on this thread is yeah you can super charge but the cost isn't cheap. Yeah you can make it a street motor or strip. Just add $$$$$$

coppercutlass

I wanna build a low boost turbo sbo build. I think 10 psi would be enough for stuff to not break things. Might detune the 355 i have now when the new one goes in and go for it with EFI.

1BOSS83

Which EFI?

74sprint

Here is a link to a good website about doing a 425 supercharger build http://2loose.chevytalk.org/55fourdoor00.html makes a ton of torque and breaks parts. Oh in most cases people use a Offy low profile dual quad intake as the base and weld a base-plate to it to mount the supercharger.


Ray

coppercutlass

1boss83 I was looking at the FI tech set up. they have a set up that would work well for the amount of boost i would run. I would want the set up to be fool proof . For now its a thought but making a turbo set up is cheap so to speak so a budget boost build might be in my future or not a N/A BBO but turbo'd sbo sounds so much better.

young olds

Copper, if you go for a turbo set up and stay at around 10 psi consider a holset hx35 turbo. It's very close to the same size as mine but seem to be easier to find. I have zero turbo lag, it feels like a strong n/a engine. You could push as high as 15psi but you'd want an intercooler or meth injection. If I ever get around to putting the accel I got from Mark on my car I'll start pushing it towards 15psi.

coppercutlass

Thanks young olds. I plan on running 10 psi. Just to be easy on parts. I have no real plans so to speak as im still running the engine i would like to de tune. I am going to just run BBO heads to get the compression down. The more i give i thought and with the price of FI kits going down seems like a no brainer.

young olds

It's definitely fun, the way it pulls when in boost. I'd definitely go efi on a driver, not that a carb isn't doable efi is just better in a turbocharged application I feel. My engine has held together fine so far, and I'm going to run it till it blows then build a stronger short block

Pfiffle

Keep us posted on your SB turbo build. Maybe make your own thread on it. I have been curious about that for a long time. Also EFI, which I definitely see in the future for my Cutlass. Question. What comp. ratio are you looking for when you install the hair dryer? I have smog heads on my '76 with low comp. but the flow sucks. BB heads seem like a good idea and with larger valves? What brand EFI are you considering?
Thanks
Tom