[1985cutlassmuscle]

I have a double roller timing chain on it right now can I reuse it? Also what did you mean about the pistons. I believe they are flat top pistons if that help and yeah I will be switching out the carb and intake as well. My compression rift now is 9:1 and on the procharger site it says that's exactly what it suppose to be. Thanks for the help and what did you mean I wouldn't be able to use the forced induction on it? How come?

 

[cool rockin daddy]

What do you think happens to your compression ratio when you put heads that have smaller chambers on them. Start thinking and planning. I am constantly amazed how people will listen to what people they don't know say on these boards, take it as the gospel, and don't educate themselves on the building and design of engines. I give you kudos for actually going to the Procharger site, most don't even do that. But you must remember, what you get on these boards is OPINION. You teach yourself, you can decide for yourself.

 

[bigdog7373]

Normally when you run forced induction you use a forged rotating assembly. And as far as you have told me, you dont have it. Also the heads i gave you will put you at a 9.5:1 cr. That will put you in range for 87 octane but will also give you some extra horses. If you want to use forced induction then you will need to build it differently. Different heads, different carb, different cam, double keyway crank snout, etc... So basically nothing i have suggested will apply if you want to used forced induction. The setup i gave you will be good for around 400 horses.

 

[1985cutlassmuscle]

What do you think happens to your compression ratio when you put heads that have smaller chambers on them. Start thinking and planning. I am constantly amazed how people will listen to what people they don't know say on these boards, take it as the gospel, and don't educate themselves on the building and design of engines. I give you kudos for actually going to the Procharger site, most don't even do that. But you must remember, what you get on these boards is OPINION. You teach yourself, you can decide for yourself.

Hi there thanks for your opinion, but the thing is that I am just learning about building engines. So if I didn't get other people's opinions I wouldn't know where else to start. I have been trying to research it on my own but thought I would ask the question in here where people who have done it before can help me out. Again thanks for your opinion but if I followed what you wanted me to do I would end up messing something up and I just don't want to waste money. Take care.

 

[1985cutlassmuscle]

Normally when you run forced induction you use a forged rotating assembly. And as far as you have told me, you dont have it. Also the heads i gave you will put you at a 9.5:1 cr. That will put you in range for 87 octane but will also give you some extra horses. If you want to use forced induction then you will need to build it differently. Different heads, different carb, different cam, double keyway crank snout, etc... So basically nothing i have suggested will apply if you want to used forced induction. The setup i gave you will be good for around 400 horses.

Hi there that's cool I guess so you said I would be in the 87 octane area does that mean that I can't use 94 octane, i know it's a weird question but I always thought the higher octane the better performance. Thanks again for your help.

 

[RippinRon]

Well that's a common misconception. Essentially higher octane fuel burns slower and takes more heat (compression) to ignite it. A high compression engine needs it so the fuel air mixture doesn't pre ignite or detonate before the spark plug does it. Putting premium fuel in a engine that doesnt need it puts money in the oil companies pocket and can hurt performance. If your wanting to learn check out some books on the topic.

 

[bigdog7373]

X2 on that ^^^. I like my cars to run on the cheapest gas there is. With fuel prices nowadays its not worth it to build higher compression for what? 15hp? Waste of money.

But before you do anything else, decide whether or not you want to use forced induction. What are your power goals? And how much work do you want to do?

 

[1985cutlassmuscle]

Well that's good to know I'll check out some books on it for sure. Saves me some money. Well for right now I wouldn't mind having around 400hp but eventually I might want to have forced induction. What would I have together for that you think? I don't mind how much it costs, I have a two jobs so I can save up quick. Thanks again.

 

[bigdog7373]

You cant have both. Either build it for forced induction or build it to be n/a. If you want the 400hp now then when you decide to go the blower route you will have to change everything and will end up spending tripple your money and time. You have to plan your build for forced induction, it cant be an after though.

 

[1985cutlassmuscle]

Ok well then I guess my question is what do I need to get for a forced induction build then because I want to get the blower too. Eventually or if I can only build the engine with the supercharger what would be everything I need for that?will a th350 trans work with the build as well. I know I need a blow throughout carb going o switch out the driveshaft and maybe swi h to a 12 bolt rear end. But if you could give me what I need for the engine that would be awesome. Take care and sorry for all the mix up.

 

[cool rockin daddy]

Sorry but I just think you're heading down a path you are nowhere near ready to follow. You don't appear to be able to figure out compression ratio, don't understand what octane does, and just seem to be looking for a grocery list of parts. Good luck in your build.

 

[68NovaSS]

Ok well then I guess my question is what do I need to get for a forced induction build then because I want to get the blower too. Eventually or if I can only build the engine with the supercharger what would be everything I need for that?will a th350 trans work with the build as well. I know I need a blow throughout carb going o switch out the driveshaft and maybe swi h to a 12 bolt rear end. But if you could give me what I need for the engine that would be awesome. Take care and sorry for all the mix up.

Why a blow through carb?? Are you planning a turbo or supercharger? If you have 9.5 c.r., that needs to be changed, for a medium boost supercharged motor you want something in the 8:1 range, maybe even lower. At 9.5:1 static, 8 lbs of boost will net you 14.7:1 under boost. Depending on your power level, you will want to address that 12 bolt, universal jolints, etc, give it some beef. The 350 will hold up for a while, again, depending on power levels and driving style. Motor internals...same thing, how much power do you want and how much insurance? Forged vs. case vs. hyper pistons, good rods, bolts, boost ignition retard, maybe an injection system to help with detonation, it goes on and on.

 

[bigdog7373]

Like 68 said, how much power do you want? Why not use a 144 blower? Looks cooler, sounds cooler, easier to set up, you dont need a blow through carb. Think this through.
Major question: HOW MUCH POWER DO YOU WANT WHEN IT'S ALL SET AND DONE? That will be your deciding factor on what route to take.

 

[1985cutlassmuscle]

Hi everyone, well I'm looking for 600 horsepower at the most. I thank everyone for their help. I was going to go with forged parts I have done a lot of work to my car already I have a whole new Edelbrock suspension kit that I have added it's got a 10 bolt rear end in it right now but want to switch to a 12 bolt. My brother has a Shelby gt500 and looking to keep up with him. I am going to the library tomorrow to get a book on engines, I don't mind either taking my time on this build and I just would love some help to get my engine to those numbers. I am going to be beefing up the other parts of the car I need to but just wanted to get suggestions on engine stuff. Thanks everyone for your ideas and I will talk soon.

 

[1985cutlassmuscle]

Why a blow through carb?? Are you planning a turbo or supercharger? If you have 9.5 c.r., that needs to be changed, for a medium boost supercharged motor you want something in the 8:1 range, maybe even lower. At 9.5:1 static, 8 lbs of boost will net you 14.7:1 under boost. Depending on your power level, you will want to address that 12 bolt, universal jolints, etc, give it some beef. The 350 will hold up for a while, again, depending on power levels and driving style. Motor internals...same thing, how much power do you want and how much insurance? Forged vs. case vs. hyper pistons, good rods, bolts, boost ignition retard, maybe an injection system to help with detonation, it goes on and on.

Hi there I actually have 9:1 compression and if you read the procharger site they say that they have sbc 350 carved kits I know the engine has to handle the power but also on there they say the best compression for the kit is 9:1 which I have in my car already thanks for your suggestions.

 

[bigdog7373]

600hp huh? Ok then. Best bet is to make it a 383. I'd go all forged bottom end, 8:1 cr and 6-8lbs of boost.

 

[1985cutlassmuscle]

Ok thanks I guess I will be selling my 350. Anyone want to buy a 350? Jk ok well i will let you guys know how the build is coming and I'll post pics of my car. Bye for now.

 

[bigdog7373]

Dude, that makes no sence! You need a 350 to build a 383! There's not 383 block. It's just a 350 with a longer stroke crank in it.

 

[1985cutlassmuscle]

I know I meant I would sell it and buy a 383. I know you can make one out of a 350ci. I bet you thought what an idiot no I know that though

 

[RippinRon]

600hp is a lot, is the rest of the car able to handle that? Are you? Have some realistic goals and work your way up to it.