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Thread: 385 fast burn crate engine 350ci
          
   
   

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  1. #76
    junior2 is offline CHR Member Visit my Photo Gallery
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    thanks henry i respect your choice. i have never had anything obove 400hp on the street so i dont really know what it feels like. i ran the 385 with a 350 tranny and a regular torque convertor and 3:73 gear and it felt really good.
    havent ran a 6spd tranny at all on the street on the mc. ive droven stick but not with 385hp. so at this point any info is very appreciated. im in no hurry to jump into something i wont like but i do want to be able to out run my oponent in the street if it came to it. i am going to start building the engine
    hopefully in feb.there wont be much to do to it other than the heads and cam. and assemble together. and depending on the cam i might do a jr intake?
    questionable at this point.my decission is in the hands of the pros. now i wait for ERIK ERIKSON choice. i will take both in consideration. its going to be a hard choice for me unless it comes down to one cam. thanks guys

  2. #77
    erik erikson's Avatar
    erik erikson is offline CHR Member Visit my Photo Gallery
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    [QUOTE=junior2]
    Quote Originally Posted by Henry Rifle
    Good catch. I just think a .600 lift / 300+ deg cam in a Monte on the street is going to be "interesting" to drive.

    ok guys your brains have all the calculations in mind with these two responses. im very slow but when you elaborate a little more ill catch up quick. you wont even know if its the sam idiot that was asking the questions.
    ok guys im going to refresh my brain, and refresh your brain with what i have.
    and give you two options that im looking at nothing else.this is what i got. which one would the pros choose?
    what would HENRY RIFLE AND ERIK ERIKSON choose for there street toy (daily driver)some what daily driver.
    put it this way if your other car broke down would this be your back up for the week.

    385 create engine 385hp/385tq
    1987 montecarlo ss weight 3600-pound
    3:73 rear gear / with a 6spd out of a camaro

    what im looking at are two cams
    hot cam durration I: 2 18 E : 2 28 lift I: 5 25 E : 5 25/w "1.6 Rocker" 112

    other cam
    12370847 = durration I: 2 34 E : 2 4 2 lift I: 539" E : 558"/w1.5 rockers 112
    please read carefully i want to add the 1.6 rockers to this cam which will give me a higher lift
    being max lift with 1.6 rockers added instead of 1.5 rockers will be 0.575" / 0.595 (w/1.6 ratio rocker

    which out of these two are yall recomending because i got confused on the (.600 lift / 300+ deg cam) stated by henry.. thanks guys for putting up with me
    You remind me of myself about 15+ years ago.
    It is very difficult to put "daily driver" and "street toy" together in the same sentence.
    I do this for a living so it makes it even worse for me.
    I think the second cam is to large to think you might have to drive for a week.
    Also your gear ratio really is a little weak for the cam, in other you need a 4.10 or more gear to make it work correctly.
    I would go with the smaller cam in your combo.
    With the smaller cam everything sould work together very well.

  3. #78
    Henry Rifle's Avatar
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    and depending on the cam i might do a jr intake?
    Junior,

    If you're referencing the Edelbrock Victor Jr there, I'd re-think that one also. That manifold works from 3500 RPM up - a mismatch unless you're going with the big cam. With the FB385 and the Hot Cam, the Performer RPM Air Gap is a better fit.

    Remember that an engine (and in a larger sense the whole car) is a system - not just a collection of parts. They need to fit together, or they start working against each other.
    Jack

    Gone to Texas

  4. #79
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    Henry is right,a motor that runs well is built for a purpose and all of the parts go together for that purpose.A massive carb on a stock engine ....performance goes down,high rpm manifold{single plane} on a stock motor...performance goes down.Huge cam ,stock motor performance goes down.......now take those parts and use the proper heads and short block ,with the proper gearing,etc..and you have a good motor.

    High rpm and big cam durations are for the track or some one who likes to fiddle with the engine ALL the time,if you want the car to pull hard and be fun to drive on the street and idle,leave the big cams and the high rpm intakes on the shelf.Compression ratio and head flow make horsepower,the rest of the parts have to match those 2 figures.

    Take what you have now ,find the compression ratio and head flow numbers and let that tell you what cam you need,then you take the cam spec,which tells you the operating range or rpm range and dynamic compression and then select a intake that matches those specs.Then use max rpm and cubic inches to figure size of carb,since you are building a street ride,you should use a vac secondary carb.

    If that seems like alot to figure, then do exactly what henry said and get the hot cam ,any larger of a cam and the rpm that the motor starts to pull at goes up.{example} From a dead stop the smaller cam pulls harder and sooner in the rpm range of 1000 rpm to 6000 rpm,the smaller cam will pull hard from about 1500-2000 rpm up,the large cam will not start to pull until well above 3800-4200 rpm.That gives you 4500 rpm of pull before you have to shift with the small cam and about 2000 rpm of pull before you have to shift with the big cam.
    Soo what does this all mean...?
    It means the motor with the small cam will pull away from the same motor with the big cam off the line and the big cam motor will have to play catch up when it hits about 3800 and starts to pull,meanwhile the motor with the small cam is starting to lose some power to the big cam as the rpm approches 6000 .Keep in mind the small cam motor will achieve this rpm faster since it starts pulling sooner in the rpm range and therefore reaches max rpm faster than a big cam motor,Repeat for second gear and by this time you are well above any posted speed limit and will have to or need to shut it down.
    The track only deal is alot different story,this is where you can use high rpms and a big cam by taking advantage of a large stall speed or manual tranny and big gears 4.88 or larger to keep the motor in its rpm band of 4000 to 6000 and now with the matching parts the big cam starts to show its stuff and get with it,while the motor with the small gears 3.73 and smaller cam,will show its weakness of small rear gear and lower rpm range in this high rpm enviroment,but will be way way better on the street than the big gear big cam motor.

    This is not the only way to look at it and there are definatly exceptions to any rule ,but this should help you better understand the technical advice you are recieving and how motors and parts are working in unison to accomplish the same goal by being built for the same purpose.You just cant bolt on a nascar intake and be the fastest ......the rest of the parts have to match or...... you have done the opposite of what you bought the intake for ,which was more power.Same thing with the rest of the parts they need to match existing parts or they will do you no good at all ,infact they will actually lower current performance.
    Last edited by shawnlee28; 12-22-2006 at 06:54 PM.
    Its gunna take longer than u thought and its gunna cost more too(plan ahead!)

  5. #80
    junior2 is offline CHR Member Visit my Photo Gallery
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    thanks guys for the info. i have a friend that has a trans am running 550hp at flywheel. its 85hp more than what i want and his car is streetable.its a daily driver to his job.man this car has no traction without the slicks. he took me for a test run just around the block and its very fast.here is a link to a camaro running the 12370847 cam in it. its sounds good but i think his exhaust seem to be to small. i dont know camaros always sound funny at the tail pipes.here is the link http://www.madz28.com/chris847.mpg . does anyone have a sound clip of the hot cam. and at what hp?

  6. #81
    TyphoonZR's Avatar
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    Quote Originally Posted by junior2
    I have a friend that has a trans am running 550hp at flywheel.
    You're confused,... that is a Z28, now why don't you telling a TA owner that. It even says, Mad Z 28.
    Last edited by TyphoonZR; 12-26-2006 at 04:47 PM.
    Objects in my rear view mirror are a good thing unless,.... they have red and blue lights flashing.

  7. #82
    Henry Rifle's Avatar
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    Everything you need is somewhere in this thread. Good luck.
    Jack

    Gone to Texas

  8. #83
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    I couldn't have said it better myself, except maybe comparing to driving a small block Jimmy with hoodscoops...

  9. #84
    junior2 is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by TyphoonZR
    You're a f'in idiot, Str**ts,... that is a Z28, now why don't you fly away! It even says, Mad Z 28.
    Yeah, I have a sound clip, email me at.... wetdreamscumtrue@hotcams.cum
    whats this all about all i did was post a link to the z28 ok so i called it a camaro sorry. i was just letting some peeps know what it sounds like with the
    12370847 cam in it thats all.

  10. #85
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    Quote Originally Posted by junior2
    whats this all about all i did was post a link to the z28 ok so i called it a camaro sorry. i was just letting some peeps know what it sounds like with the
    12370847 cam in it thats all.
    Hehehe, it's all good with me, if you want to call a TA a Camaro, apology accepted, but most TA drivers would be all over you.

    So what have you finally decided upon, seeing as the "best" have given you more than what you could want.....?

    All I say is, "takein' it to the Streets!"

    And Hey, I don't wanna' hear about your peeps!
    Objects in my rear view mirror are a good thing unless,.... they have red and blue lights flashing.

  11. #86
    TyphoonZR's Avatar
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    Quote Originally Posted by rwsalick
    I couldn't have said it better myself, except maybe comparing to driving a small block Jimmy with hoodscoops...
    Hey, dem scoops breathe life.
    Objects in my rear view mirror are a good thing unless,.... they have red and blue lights flashing.

  12. #87
    junior2 is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by TyphoonZR
    Hehehe, it's all good with me, if you want to call a TA a Camaro, apology accepted, but most TA drivers would be all over you.

    So what have you finally decided upon, seeing as the "best" have given you more than what you could want.....?

    All I say is, "takein' it to the Streets!"

    And Hey, I don't wanna' hear about your peeps!


    its all good henry and everyone here have gave great advice. im just a hard headed individual and cant type worth a crap lol.that being said do you really have a sound clip of the hot cam. if so post on here so that anyone as hard headed as i am can hear the two cams installed.

  13. #88
    junior2 is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by TyphoonZR
    Hehehe, it's all good with me, if you want to call a TA a Camaro, apology accepted, but most TA drivers would be all over you.

    So what have you finally decided upon, seeing as the "best" have given you more than what you could want.....?

    All I say is, "takein' it to the Streets!"

    And Hey, I don't wanna' hear about your peeps!

    oh i didnt confuse the two. what i meant was that i got on a (TA) a friends car.it is putting out 510hp at flywheel and an auto trans dont know what trans but with a 3500 stall i believe he said and its streetable.what i was getting at was that i wanted 465hp out of the 385 fast burn with the gm847 cam.that being said i was just comparring hp out of the two.so i mentioned that its 85hp more than what i was looking at. so i think i might be able to live with the 465hp in the streets with the 6sp and 373 gear. im no pro but i think it will be streetable if his ta is at 510hp at flywheel. i also posted the link of the z28 running the gm847 cam. i quess i should of elaborated more on the link or i should really learn how to slow down and post, reading my own post twice before i hit the submit.lol by the way i didnt check this one twice so hear it goes....................submit yeaaaaaaaaa baby lol

  14. #89
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    Quote Originally Posted by junior2
    i should really learn how to slow down and post, reading my own post twice before i hit the submit.lol by the way i didnt check this one twice so hear it goes....................submit yeaaaaaaaaa baby lol
    Some poeple never learn. But you are right, if you slow down and read your own post prior to "submit reply", it helps.

    My guess is that even you would have difficulty reading your first post to someone sitting next to you, without you backing up and taking another run at some thoughts and having to explain several issues to him/her. I'm glad you can take all the ribbin'!
    Objects in my rear view mirror are a good thing unless,.... they have red and blue lights flashing.

  15. #90
    Henry Rifle's Avatar
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    That engine is going to be installed . . . and worn out before this thread ends if this keeps up.
    Jack

    Gone to Texas

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