1972 Dodge j/sa

[Chris Hill]

What do you think about a 383 as a 71 model? I was thinking these two combinations to be similar performance wise.

[Jim Wahl]

I bought 4 sets of 360 heads from a reconditioner and two of the eight heads were over. Jim

[GTX JOHN]

Ed: I own over 100 sets of small block mopar heads. If you clean the carbon off the ports most EVERY Pair of junkyard 894,915,308,587 are several cc's over spec. Every one who runs this combo know the spec's are a disaster. Do you race one.....we race several. If anybody want to come over at Vegas and pick a set out of our pile we will cc them and I will EAT them springs, valve and all if they are not over tech specs......are you a betting man?

[Rod Greene]

Ed all you ever do is blow hot air about that which you know nothing. I have run 340's since the early 70's and have set several records and I know John is telling the truth.

[bdixon]

wow all i wanted was a little help with my car and motor combo
can't we all just grt along?????lol

[Chris "drooze" Wertman]

Originally Posted by GTX JOHN

Ed: I own over 100 sets of small block mopar heads. If you clean the carbon off the ports most EVERY Pair of junkyard 894,915,308,587 are several cc's over spec. Every one who runs this combo know the spec's are a disaster. Do you race one.....we race several. If anybody want to come over at Vegas and pick a set out of our pile we will cc them and I will EAT them springs, valve and all if they are not over tech specs......are you a betting man?

Ok, Ill take what you say as gospel on this and many others since Ive only had one set of 340 heads and didnt know them from the 360 heads.

The question I have being an eternal thinker is Ok if they are over runner size, why not reduce runner size ? 1 way I can think of easy and effective....

How many is "several" ? I guess I could pull 1-2 out of any runner taking off .100-120 or so, granted on intake youd need thicker gaskets or 2 or 3 but it would reduce runner size and should pass a CC check ? No ?

Just thinking out loud here.......

[Chris "drooze" Wertman]

Originally Posted by bdixon

wow all i wanted was a little help with my car and motor combo
can't we all just grt along?????lol

Welcome to "Class Racer" they forgot the rabies shots in this neck of the motorsports world, everyone suffers from some sort of rabies, distemper, or lead induced psycosis here.....

But seriously dont let it scare you away, I didnt let it scare me away, the amount of knowledge here and the contacts are vast and well worthwile.

Well worth it, it just takes a thick skin and the ability to ignore and not take things personal.

Then again I was the dumbass who didnt let the truly rabid dog scare me away and had to go for 6 or 8 weeks to the hospital for rabies shots after it bit me......left a nice "prize" of a scar though..You know something is wrong with the dog when a pitbull runs at you bites you, lets go takes 3 or 4 steps and falls over drooling.....its kinda like that here, they bite but they let go......

[GTX JOHN]

Unfortunately some of the ports we are talking about are 4-5 cc to big..there is just not enough material in ports to remove. You can't mill them thru valve cover bolts! BTW Ed it was 1995 and the cars were Etter, Buell, Schlutz, Myers. I was there and saw there stuff. It is difficult to impossible to make these head legal, I been racing these cars 30 plus years! We just want to race our cars... not out to cheat anybody! Why not go to a junkyard and pick up some heads and check them! Do you think I ported 100 of old ***** head just to invite you over to check them. A lot of these heads have been on my shelf for 30 years...never had a valve job . Why would I lie about it my Demon... has been full teardown a half a dozen times! My kids wagon was torn down in Phoenix this year and was legal but only by a scant cc! I invited all the head guys I know to look at the heads with valves out even my many enemies.... they were clear untouched and milled the heck out of intake to be legal. My other boys car was torn down Vegas 11/09 Nationals also legal! We are not cheaters...I have race stock since early 70's ... No DQ.... Stop on by my pits and call me a cheater Ed...I am easy to find! Put your money up and let's check some heads... I am tired of seeing every one struggle to find 40 year old heads that meet a nonexistant incorrect spec and spend a ton of money to try and fix them. Everybody that runs these knows there is a problem! I don't even know who you are, but if you raced this combination for 40 years you could speak with a little more authority and a lot less BS. You are just trying to stir up trouble and you don't even have a dog in the fight!!!

[Jim Wahl]

Originally Posted by drooze

Ok, Ill take what you say as gospel on this and many others since Ive only had one set of 340 heads and didnt know them from the 360 heads.

The question I have being an eternal thinker is Ok if they are over runner size, why not reduce runner size ? 1 way I can think of easy and effective....

How many is "several" ? I guess I could pull 1-2 out of any runner taking off .100-120 or so, granted on intake youd need thicker gaskets or 2 or 3 but it would reduce runner size and should pass a CC check ? No ?

Just thinking out loud here.......

This has been tried before Chris and deemed illegal. Not too hard to detect. Jim

[Paul Ceasrine]

340 Heads,
I think, or seemed to recall, for some reason, the heads off the later 68'
model year engines were a 'touch' smaller in cc volume. How and why, I can't remember. It may have been just a 'needle-in-a-haystack' set of heads. Casting #'s were the same. But of course back in 69'/70'/71' the NHRA Tech people weren't so 'picayune'.
PC