how much will aluminum heads pick it up?
 

i'm wanting to buy a pair of BRODIX ALUMINUM HEADS (158-1021001)i have 461 462 double hump heads now,will the brodix heads pick the car up any?and are they worth the $1100 plus,,and what all do you have to have done to the brodix heads after you get them?,,,thanks steve

Whether they pick you up or not depends on if your heads are holding you back right now.What are the specs on the rest of your engine?

x2 on that, weight difference will help though

Heads all flow differently, some good porters can get doublehump heads to flow 270 CFM int. Almost every alum. head on the market flows better than that. Track 1's flow 272 cfm with port match out of the box. So with that said IMO you will gain the weight, plus maybe 1/10th in ET, no more.


JMO

Zip.

I ran a set of ported 462's on my 406. Changed to a set of 227 AFR and a roller. picked up .6 in the 1/8 :)

355 w/steel crank roller rockers,geardrive timing,dome pistons i think 13-1 or 13-2 (can't remember what the guy said)

the car was running 6.93 that was the fastest i could get for about 6 weeks at 38 degrees,then i moved timing to 40 degrees and now she runs 6.84 in the 1/8,,i drive a 77 vega wagon and it weighs around 2400lbs

Yeah,the short stroke of a small block usually loves timing!What are your cam specs?BTW,those are good numbers for an iron headed 355.I know some cars have run faster with iron heads,but there are alot of guys that can't do 6.80s with iron heads:D But if car is running that good,it would say that a better flowing set of heads will help.I thought maybe you were one of those guys with a 250 horse 350 looking for a magic bolt-on :D You would pretty much have to know what your heads flow now,at different lifts,to decide if the ones you are looking at will improve you.But as far as aluminum over iron,there is no power to be found in one type of metal over another.Flow is flow and velocity is velocity.

Olds, there is power in metal,If a guy gaters up enough Kryptonite he could kill superm.... Oh, nevermind :)

I think they will make a big difference...I think the 461 heads were 1.94 stock with 64 cc chambers...might have been 2.02 not 100% sure.

sorry don't know the cam specs,i bought the car off of here about 8 weeks ago and don't know the inside of the motor to good,but i'm going through it this winter,,i've put a msd dist,a geardrive timing,coil over shocks(back)new lexan glass,i;ve tried to call and left messages for the guy i bought it from wanting to know stuff but he will not return my call,i think thats about as sorry a person can get(take the money and run)

i was racing one night had won first two rounds was in the third when my plug wirs got caught on my stering rod and pulled my dist,cap off breaking my roller button,nobody could figure out what kind of roller button it was(i still have not found a rollerbutton for it)i tried calling the guy to see if he knowed but no answere,,my friend says its a mallory dodge,so i bought new msd,,,,steve

also not mentioned is the aluminums capability of shedding the heat quicker then cast...this could or could not help,,again depending on how your sure up makes HP now..

Actually,aluminum is a heat SINK.It absorbs heat quickly,but releases it very slowly.Cast iron actually gives up heat better.Not trying to be a smart aleck :D

Man, too bad you did not have a need for 335's. I got a nice set of Darts in the classifieds. Pro 1 CNC complete with headstuds and push rods that I would take $3K for.

I think it would have to pick it up some. Like others have said you are going to save alot of weight I'd guess close to 50Lbs..plus the flow, chances are the heads you have don't flow that well compared to the aluminum ones. I'd have to guess you'd pick up 2-3 tenths once everything works together..Cam,Carb,ect..

the brodix heads i'm wanting(158-1021001)what all will i have to do to them(port polish )or are they ready right out of the box,,,thanks steve

Another thing... with aluminium you can run a little more compression on the same grade of fuel. I switched to pro1's last year and bumped c/r to 12:1 and still run 91 oct pump gas. My old ported 461's wouldn't take more than 38 deg total timing. Pro1's like 44 deg total. I saw a big gain, picked up 7 tenths.

AFRS
 

A buddy of mine went from camel humps on a 11.5 to 1 406 to 195 afrs in a 72 chevy truck. ets went from 12.30 to 11.81. He didnt change any thing else. AFRS ARE THE WAY TO GO!!!

Those I think should run well on your 355 the runner size is good and the valve size. You could run them out of the box but if you want max performance then having someone who knows their stuff port them ect.
Just remember you will most likely pay upwards of $1000 or more for the work if it is done properly. But it will run it's best. :)

i'm running 110 oct right now,,i was running 6.93 at 38% moved timing to 40% and now run 6.84,

last saturday went 5 passes6.89,6.88,6.88,6.88,6.86 00.10 redlight,the sad thing is i could of cut a 05 an still beat the guy,oh well,,,,steve

Re: AFRS
 

did he run them straight out of the box or had them worked,,,steve