Thread: new heads!!!?

Tweet

Yup, the old technology in cylinder heads is way down from what is available in even moderately priced aluminum heads... I would almost bet an out of the box set of even just the Edelbrock RPM heads will outflow with better velocity then a pair of camelbacks with $1500 worth of flow bench and porting time..... Kind of like comparing a dual point distributor with an MSD hei distributor...not even fair!!!!

Originally Posted by 555nova

erik sounds like you have bad ass 57 i love them things.there are hundreds of heads that out flow the best flowing camel backs.i had a guy come to shop last yr with a pair with about 2000 in work and they only flowed 262 max .600 lift.a set of out of box large port vortec heads flow 269 at .600.i have a set of afr 180 runner ported bye one of best guys around for sale with a super victor intake.the heads flow great down low and peak at 305 at .690 lift port speed very good. i'm selling them because they never came back to pay for them.

Yes,the car is bad a$$ but she tends to be a pain to drive with the 4-link.
The biggest problem most people have with heads is everyone thinks bigger is better.
I have tried to tell everyone go with the head that has the smaller port volume with the highest flow numbers.
Your AFR heads would be perfect for a 406-434 pro street engine with a good hyd. roller cam.

Shhhhhhh. don't let the secret out till i sell my other set of camel humps.......Just kidding.............I had my set of humps sitting there at the machine shop..............was going to cost $400 bucks to fix them right plus the cost of perfomance springs to match the cam I get. Sold them for $150. Add all that up and its pretty close to a set of new (better) heads. I am going to go with one of the alum. top end kits by holley or edlb. not sure which one yet.

chevy drivin look in to the reg port fast burn vortec heads jegs has them for 260 each.i have them on a customers 350 with a mild hyd roller.i dynoed the engine last sat it made 388hp.the large port vortec heads work great 383 and up mild street engines.

My block is built already, 327 small journal bored 40 with .125 domed forged speed pro pistons. Had the bottom end balanced and am awaiting funds to finish the build. Has 10.35 cr with 64 cc heads. Was looking at the top end kits, they advertise dyno numbers of 400 hp on a flat top 350 cid. So I was going to try and get as close to that HP as I could using either kit. The kits are 1,600 bucks for heads/cam/intake and a few other odds and ends. Would buy everyhting seperate but don't feel like guessing at matching parts combos up. Going to put it in a 68 camaro , I have two powerglides I could build or a T400. My buddy gave me a 3500 stall that will fit the T400 so thinking of going with that one.

i would use th400 it will come out the hole better the first gear ratio is 2.48 the glide is 1.76 i think.if you by the kit i use the edelbrock.if you use a 75shot of nos the car will run very strong.you dont have to change timing or fuel if you stay 75 or lower.good luck,run fast,run safe.the motor should come close to 375-400hp.i build racing for living if i can help i will.

i didnt say they were for me i have my eyes on a set of darts

Originally Posted by gassersrule_196

ok erick and others who ive had heated debates with, i finally have enough for a set of new heads. i found a set of 180cc runner 64cc chamber 2.02 1.6 complete dart iron eagles on ebay for 799 +70 s/h. now heres my question to you IRON or ALLUM!!?

Scooter, what size motor do you plan on using under these heads and how tight will you spin it?

You may want to take a look at these Vortec BowTie heads before you lay down the green for the Darts. You can use the Vortec or conventional manifold with them and use either perimeter or center stud valve covers.
http://www.superchevy.com/technical/...0511sc_vortec/