the one thing you need to know is what your compression ratio is, with a 8 pound pulley you will want to be around 8:1

as far as the block goes, these blocks are known to go at 500hp, unless your ryans88gt because he seems to have more luck then most.

depending on your compression ratio, i would say in the 450hp range with 8 psi.

some one will correct me if im wrong.

 

You can run 8lbs of boost on 9.1 with no problems even more if you'd like.

 

450HP, and im guessing at least 420 TQ...Dang, well that would destroy my tranny im sure...

Im not sure about the 306 and its ratio b/c the guy before me put it together so i have no idea, and no idea how to find out. But he was running a S/C before, although he didnt tell my that is my guess, and the computer is chipped. But thats about all i know unfortanently.

I would be affaid i would crack my block, and destroy my tranny. Does that make sence or am i being naive? What do you guys think?

I though about maybe buying it and selling, i could prob make a little money, but i would feel like a D-bag.

I keep on going back and forth between wanting a S/C and alternatives. But i guess i just might have to rule S/C out for good. The cam is weak im thinking of a Stage 2 cam by Trickflow. But i dunno if i have the Valve clearence.

I dont know what other mods i can do, but i want some more HP Thanks for the help guys, much appeciated. - The Novice

 

i would just buy it and run it as it is

i have a friend with a 347 stroker and a 150 shot of nitrous that he took down the track a cupple times and nothin happend to eather the engine or the tranny

 

get the blower if you are gonna use it... Im assuming this is a street car... it's not like your gonna crank the car up and split the block...

 

Mostly street, with hopefully some track time on it too.

So you are saying i should have to worry about cracking the block? But what about my tranny though? Wont that S/C's Torque just eat it up?

And jw what happens if i continue to run the 24lbs injectors?

 

your duty cycle hits 100% and your motor leans out and blows up.

 

No you won't crack your block. I'm running a wilder combo than that with 15 pounds of boost and a stock block.

I also have a nice shiny S-trim and polished aftercooler for sale

 

Thanks Darrell, although what about my tranny? I dont know if these S/C make a lot of TQ like the roots style do or not.

You running a T-5 Still?

And i have 24lbs injectors will i have to upgrade or can i wait a little bit? And im guessing i would need a good tune for this to work best? Thanks Darrell! - The Novice.

 

I gave up on T5s along time ago. I had one good T5. The other 500 T5s I had were junk. I have a TKO in my street beater.

I run 42lb injectors in my car with no FMU.

 

your going to be fine on 9:1 compression ratio i have seen larger boost numbers run very well with no problems..Your golden bro

 

you'll have no problems with a proper tune, with either the trans or the block. People have been doing this for decades.

 

we run 11 pounds on the 96 cobra.. 9.85:1 compression and it has over 100k on it.

 

the only way to crack a block is by spraying methanol injection

 

lmao.... u beat me to it

 

^I was going to post the same thing as soon as I saw the title... As for the OP, your fine. Retard the timing, watch you plugs & A/F and drive the **** out of her...

 

So you guys think i will be ok huh? And even if i drive her hard i shouldnt have issues with a proper tune? If so i will really have to think about this then, i was kinda scared i could hurt the car a lot.

But what else would ya recommend i get in support of the S/C system? Do i need the BTM? Bigger Injectors and a Chip or anything else? Thanks a lot guys for the help!!

 

I am putting out 502 RWHP and my block is stock....still works and runs fine. One question though why does the meth injection crack it.

 

Its an inside joke about a member that is now banned.

 

ok so heres a question (not to hi-jack the thread)

on my 78, i have a 306 with a stock crank, but its got a set of hypertectic flat tops, it puts the compression around 8.5:1

i would like to get some big chamber heads on it to get it around maybe just 8:1, then do a big single, what do you think it could take? (the engine only has 2k miles

 

Not worth it. The pistons will never hold enough boost to justify running 8.5:1 (or less compression).

 

don't worry you shouldnt have any problems just make sure you get the car tuned with a chip on a dyno after you install the supercharger i recommend getting a 4 bank SCT chip, order it blank, and have someone tune your car so it is safe

 

You can run a lot of boost on hypers, 20+ PSI. As long as you have 0 detonation. The slightest hint of detonation and you will have piston pieces instead of whole pistons.

With 8-10 PSI, it'd be a lot easier to just go supercharged. You give up a little power, but for a street car, 600 hp is overkill anyway.