I have a stock 355 and would like to build it up N/A, and than eventually mount a roots on it. I am not gonna mess with the compression ratio so that will be fine when I get ready for the roots. As far as the N/A setup I was just going to go with a Edelbrock Performer Power Package. My question is, will this be sufficient airflow as far as the carb, intake runner size and length, and head flow when I go ahead and get ready to mount my roots? Should I maybe go ahead and buy some heads, carb, and wider intake runner intake manifold? Or will what I will have be sufficient? By the way, I am at about 8.5:1 compression right now.

 

What's the budget and how long until you give it forced induction? And what do you have "now" versus what you plan on getting?

If it's only like a year or so, I would go ahead and get the heads and forged pistons. Go with the compression ratio that you plan on using for the blower. Then, if the blower is in a year or so, just get some hydraulic flat tappet cam to work with the lower compression. Then put in the blower cam when you give it a roots. At about $175 for the cam, lifters, and pushrods, it's not the biggest hit to the wallet. Gives you time to save up for and assemble a good solid blower valve train.

 

there is no such thing as a 355, most likely you have a 350 that has been rebuilt abd bored oversize to clean up the holes. you can't build an engine for a NA application then expect it to preform well when you switch to a power adder or differant induction system. it seems from what you said you're wanting to run the same intake with the carb as the blower. each would take a differant intake. WAG with the blower you'd want a compression of around 7.5 to 8.0 i wouldn't run anything with edlebrock on it.

 

Stay away from anything that has Edelbrock cams. They are crappy really old designs that have been much improved upon today. So don't get the Edelbrock Power Package its crap.

 

OK, that is good to know. How about there heads?

 

Dont buy anything from edelbrock. Thats why they are still in business, because everything they sell is crap.

 

Really? Thanks. So what would you guys suggest as far as heads, intake, headers, and a cam for a idel-4500 RPM setup?

 

note the sarcasm above.

 

Granted edelbrock carbs are CRAP!! But as for the Heads and intake manifold there are very good quality pieces. I have the RPM intake,aluminum heads and they are very good.

 

Yeah edelbrock cams and carbs are crappy junk. But their intakes and heads are actually pretty good. The air-gap intake is about the best street intake there is.

 

Edlebrock makes great intakes.

and their heads seems seem like they are pretty decent as well. But for the price of their heads, there are probably better options.

their cams are horrible, their carbs are an old carter design as well.

a roots supercharger requires its own intake. so don't worry about a supercharger when choosing an intake manifold.

there are simply much better camshafts out there, for the same price as the edelbrock cams. It makes no sense to run an edelbrock cam.

If you like their carbs, buy an edelbrock, if you like holleys, buy a holley.

And btw, you are going to have to worry about compression ratio.

 

Why not just go order the blower and bolt it on your stock motor.
It will run fine with *moderate boost*.
Why waste money buying 300hp parts that you will have to change later.

get the blower, bolt it on and go... then get new heads, cam , larger carb etc etc. Buy parts that will get you the HP you are looking for the first time.
8.5:1 is fine for a street blower set up on about 6 to 8psi boost.
You'll need 92-94 octane gas a moderate "boost retard".
Exactly how much Horsepower are you looking for?

 

Well I was really hoping for atleast 500 hp at the rear wheels, see this motor is going to be put into a '72 pickup, and I just had it weighed, 8000 lbs is alot of *** to get moving, so I need all the torque I can get outta that 355.

 

Yes that is why you need a supercharger!!!!