I just found out im getting a good tax return, i know a guy who is selling the aftercooled porcharger off is his old 95 Z28 cheap.
He's running it at 9psi with longtubes, exhaust, stall, better fuel pump, & thats really about it!
He has over 100k on his stock motor with those mods & no problems thus far.

How safe would that supercharger be on my car, by then i'll have exhaust but that will prolly be about it.
Do i need more fuel or should i run lower psi, i want more power but safe power?
thanks!

 

just for safty i wouldn't run more than 6#'s on a stock motor, unless you are getting enough tax return to pay for a rebuild if you blow the engine w/ 9#'s...

you'll have to get a bigger fuel pump i think, even with 6#'s...

but 6#'s should put you over 400hp at the wheels i think with some tuning and a full exhaust.

 

This topic is discussed all the time. From experience I would say any amount of boost on a stock shortblock is not safe. Some people go a long time without having to rebuild there motors and some rebuild within minutes after installing their blower. If you have your heart set on a blower than I would say start saving for your rebuild. I would recommend going no more than 8lbs of boost on an intercooled setup. Upgrade your injectors and ditch the inline ATI pump for a Walbro 255 lph intank. Also have some kind of scan tool (Scanmaster) to monitor for knock.

 

i agree, plan on getting a new engine sometime soon if u put it on...i personally would never do it, but its up to u...

 

I love boost but there are so many costs involved other than the blower. The blower is actually the cheap part. The rebuild is what usually makes you cry.

 

supercharger + hypercrap pistons + high compression = BOOM

 

6-8psi is fine so long as its got a good cooler and PERFECT TUNING!
TUNING IS KEY!

you dont need bigger injectors yet, just bump your fuel pressure.

did i mention tuning?

 

Well it sound's like i'll just spend my money on more bolt on's for now.
Down the road i guess ill look at other ways of making more power like H&C.
But i really need this car to last, i only have 50k on her, dont wanna blow it up, thanks for the info.

 

forced induction > bolt ons

there are guys on the vette forum runing 10 and 12 psi intercooled with nitrous...
its all about the tuning...

6-8 isn't hurting anything

good luck getting 120hp from bolt ons

just dont rev above 5700

 

I agree since you are on a budget I feel like you will be much happier with a ported heads and cam. As stated earlier tuning is the key with a blower car but no matter how well your car is tuned your bottom end will eventually give. The hyperucraptic pistons are usually what goes in the motor.

 

Sure.

As long as you don't go over 6 lbs, you wouldn't have any reliability issues.

My friend was running a 4.5# ATI supercharger for years on his car with no ill effects. Car went 110 mph (probably around 350-360 rwhp with that weight) in a heavy convertible, with no mods but the supercharger and a Borla XR-1 race muffler... Stock manifolds, etc.

I think that if you're going to be running something that tame (4.5 - 6#), ditching the FMU and letting the MAF do the job would be a good idea.



Mike

 

Well i dont expect 120h/p from simple bolt on's, i know better than that.
I was saying maybe i should put aside the s/c idea for a while till i do all the starer mods.
Also maybe i sould look at H&C pkg's as well.

I did hear somebody mention a very low psi S/C, ive seen 4psi powerdyne units for a good price new.
Are they good superchargers, is 4 ps1 worth the trouble & money??

My goal is a mild daily driven car that will run high to mid 12's & stay together.
BTW i don't wanna use spray.

 

TTT, just wanna see if anybody else has anything to add.

 

If you want a daily driven 12 second car, you can get that easily with a good set of bolt ons, gear, and traction setup. I've seen quite a few bolt on cars doing high 12s and driven daily. Blowers are mainly for people who want to go very fast IMO. I'm planning on running a blower once i rebuild my engine to run low 10s to high 9s.

 

hotcam is not a good force induction cam