Is this a good match?

[Robry 87]

700 holley duel pump/performer RPM intake,and a bracket master II cam(2000-6500)RPM/with 60cc heads on 30 over 350.
  looking for in put on best combo for performance on my motor.

350/trans shift kit no stall 3.46 rear gear
   All tips helpfull.

[VileZambonie]

That combination wouldn't be my 1st choice for with that cam. Why did you pick that camshaft anyway? The performer RPM or a cam closer in specs will work a lot better with your performer rpm intake and holley carb. What are these 60cc heads you have? What do you have for pistons? Did you calculate your compression ratio?

[Robry 87]

No i dided not check compression ratio,i bought the motor all ready built tell me what i need to check and need to change i have
the #'s off the heads i should post them to make sure i have not been lyed to.
 It's proforming good 2000RPM ,and up just don't have bottom i thank i need a stall tell me what intake i should be useing
i like the cam i realy don't won't to change it but i will if need to be.
   Here is the # off the heads 354434 both match i was told there 60cc is this true?
   block # is 3970010 it's supost to be a 79/350 two bolt main.

[joesgarage71]

 Stock heads? Springs? not a good idea using that cam.

[red4wd]

As much as I like Lunati I wouldn't recomend that cam with that setup...I know nothing about the Performer RPM cams but it would have to be better than the big Lunati you have.   I am with Joe on the heads, what have they had done?  At the very minimum I would want to have the studs pinned and preferrably have screw in studs to run a cam with .515 lift and springs that could handle .550 lift. 

[Robry 87]

there not what there so post to be then right. can you give me the specks on these heads,so i will know what i need to do, change the cam
or can i go with better spring or are thay junk heads should i find some good head,and i will by new so i no what i have you guy's have help me alot thanks.

[VileZambonie]

Man did you even read what you wrote? 

305 heads are junk. Yes they have small combustion chambers which will bring up your compression ratio but at the same time they choke the engine.

If your cam is already installed and you want to keep it just go with an edelbrock performer, get a decent pair of headS and put a 600 cfm carb on it.

[Robry 87]

So there 305 heads my be the motor is a 305 i bought from a so called freind but he had a machine shop rebuild it i do no that it was new but i've not been able  to get a hold of the paper work of what was exactley was done so im kinda in the dark the cam is what he told me was in it. but he lyed about the heads so i don't no what to beleave.the cam got some lope to it is there a way to check it  with out  pulling it out?
 Ok guys what should i do i don't won't to hurt my motor.
 I put the #'s off the block on the last post can someone tell me what i do have?

[VileZambonie]

It's a 350 with 305 heads.

[red4wd]

Just going from the bracket master II and the rpm range you have one of two cams. The first being part number 00012 hydraulic 300/300 duration 515/515 lift 108/104 centerline.  or it could be a solid lift part number 00013 with the following specs 300/310 duration, 500/515 lift 112/108 centerline.  Which would explain your lack of power under 2000 rpm.  You can look it up at http://lunatipower.com  the website is not very user friendly at this time. Lunati has just sold to an investment group including Ron Coleman who owns Comp Cams.

[86 chevy silverado]

The 305 heads on a 350 is a old school cheap performance 'trick' that basically only raises compression and carries small valves and poor flowing runners. You have a horribly mismatched combo. My 454 was the same way when I bought it, single plane intake, big carb and cam with truck 'round' port heads. 

[Robry 87]

it's a hydolic cam i've got hydraulic lifters any how, it prefoms pertty good could that combo damage any thing.
 what should i change i don't won't to damage my motor  i don't run it hard 3800 is the hardest i've ran it it's most for show
it gives me and my kids something to do on the weekends i just did'nt won't blow it up or drop a valve we drive it to the store and home no road trips.
 do yall think i need to change it. I will if im going to hurt my motor.but im going to look for some new heads any tips on what to look for.thanks guys ill be back tomorrow.

[86 chevy silverado]

The lift you have is too much for press in studs unless they are pinned. You really should have screw in studs for any cam over .5 lift. The cam/intake and carb you have are for a higher RPM motor and your heads can't support the fuel/air volume that you are trying to feed it.  Just dont push it too hard and you may be ok. Look into a good set of heads and you could have a healthy motor.   



Edited for language not allowed on the forum - Captkaos

[autorepr]

Wow I think I'm wore out.  Robry, I'm guessing you don't have a lot of experience building engines? Well thankfully the folks at Edelbrock do and have taken all the guess work out. Get a Performer cam, head, intake and carb package, install it on the 350 shortblock you have. (which is basically all you have) Stick with the stock HEI ign. but make sure it's all new, cap, rotor, coil, wires, plugs etc. Get a good free flowing exhaust on it and that thing will scream and be a rock solid package you and your sons built and take pride in!

[VileZambonie]

Stick with the stock HEI ign.

If you've got the funds ditch the HEI and get a nice ignition system