hi my name is jeremy im in the middle of buying a 81 z28 with a 350. Im wondering is there a yenko turbo kit i can buy so that i ca make it a yenko turbo Z.
Oh and i see all kinds carbs,intakes and ect. that are good for idle to 5500 rpm but what if you want to get power throughout the rpm range. Can i get a cam thats idle to 8000rpm and a carb. that makes power from idle to 5500 rmp then add a intake man. that ranges 2500 to 7000rmp?
will that make more power then just having a all idle to 5500 rmp power makers?
What is cfm rating for carbs ?

 

mixing top end parts with off idle parts will rob you of alot of power potential, and make your power band a lit narrower. you have to compromize and find out what you want. do you want a car that is easy to drive, has awsome launches and burns tire no problem? or do you want a top end engine, with a rough racy idle, a little sloppy at the bottom end, but when it hits its power band, it really coming into its own. unfortunaltely you cant have both at one. i wish there was a cam with an off idle to 8000 rom rating. from what i am reading, this is what i think you want.

form what i read, i would recommend to you a hydraulic cam with a duration around 250 (hydraulic cam MUST have hydraulic lifters), a holley x-celerator single plane manifold, or edelbrocks torker manifold, a holley or edelbrock 650cfm carb, going too big will hurt your throttle response, and going too small will hurt your top end. headers with 1 3/4" diameter tubes. those parts there will give your motor a very wide power band like you are looking for, and to help a bit more, grab a 2500-3000 stall torque converter. those parts will make the most horsepower from 2000 to 6500 rpms. by the way, 6500 rpms is a lot higher then it may look, i realize that when you look in jegs and summit mags, that you see tunnel ram manifolds with a power band upwards of 8000 rpms, but ask yourself, will you ever even be at 6500 rpms? hope i can be of help.

 

oh yea and cfm means cubic feet per minute. lets compare a 600cfm carb to a 750 cfm carb. the 600cfm carb will make incredible throttle response on a 350, because when you stomp on it, the air velocity is maintained because of small primaries and secondaries, but because they are small, when you reach higher rpms, your motor will then starve for more air. a 750 will fit more air and gas into your engine, but if you stomp on it fomr a dead idle, your motor might bog down before it comes back to life. say you have air passing through a tube, if the end of the tube gets smaller, the air has to move quicker to get through the smaller opening. well when you have a bigger carb, the air doesnt really have to speed up to move through it, so your throttle response is hurt unless your motor has a high compression. but your motor will be able to reach high rpms easily because your motor is not starving for air like it would be form a 600cfm.

 

very well put.

 

thanks that helped alot. oh i got a holly 650 cfm yesterday from my boss its a 6210 (4165) it just need to be rebuilt so im going to learn from that and then use it. but thanks again

 

nice carb. learning to rebuild is a very useful thing to know, youll do it a lot.

 

Im rebuilding my carb now. It takes time but will be worth it. Good luckk

 

thanks im looking forward to it im hoping to have some time tomorrow