|04-03-2013 12:38 PM|
|vinniekq2||read post # 6 and the others|
|04-03-2013 12:27 PM|
|nvyblue03||i am running 10.5:1 ratio....i have 1.6 rockers as well. f-bird...what kind of cam should i be running....also would it be worth the money to get my heads or ported or go with something different. i feel decent power down low but not much in the mid range.....i am going to check my timing this afternoon.. what would be accurate timing do yall think?thanks|
|04-03-2013 11:36 AM|
|techinspector1||Without knowing the piston crown configuration, nobody here can tell you anything. If the pistons you have in the motor now are flat-tops, the static compression ratio could be 10.5:1, if they're 30cc dished pistons, the static compression ratio could be 8.5:1. Until we know the skinny on the pistons, we're flying blind.|
|04-03-2013 11:18 AM|
|vinniekq2||agree with fb,nvyblue03 needs to participate here|
|04-03-2013 10:11 AM|
In the end the only real solution is a large port head while keeping a careful eye on Dynamic Compression Ratio (DCR) while your there.
|04-03-2013 09:19 AM|
would you post tune up specs and clearances please,and CR
|04-03-2013 08:58 AM|
|nvyblue03||71 chevelle.turbo 350.10 bolt w/3.73.....2800 convertor|
|04-03-2013 08:48 AM|
What's your initial timing?
You need lots of initial with that setup.
18-20 initial. 14 in the dizzy and another 10 from the vac advance all in by 3400.
Also. What car? What trans? Rearend? Convertor?
|04-03-2013 08:44 AM|
what are the tune up specs you are currently using?How many CFM do the jeg heads flow?
what makes you think its not performing correctly?
|04-03-2013 06:08 AM|
Help with Heads
i have a sbc 406 with eagle forged crank,eagle forged rod 5.7,kb pistons,xr288-10 cam..236 intake,242 exhaust,110 lobe @.05,edelbrock performer intake,holley 750 mech secondaries......i currently have the jegs aluminium heads 180cc intake,72cc combustion chamber, 2.02 intake,1.6 exhaust.......this motor is just not making anykind of power like i think it should.....should i change the heads and if so what should i get? i just think i need to be making more power. how does this setup look or what should i change to make power. any input will be appriciated.