1972 Dodge j/sa

herbjr · 03-23-2010, 10:05 PM

Well I can tell you a 360 racer had 3 sets of heads that stock were all big. UNTOUCHED. The specs may be off a little. Core shift is the problem.

bdixon · 03-23-2010, 10:46 PM

Sorry for the brain fart>>>>>400 bb is my motor i have a set of 452 heads that someone has cut too much and also looks like some sort of acid might have been used on the intake side........my other problem is i live out in south dakota and emailed gtx john and can get some parts from him but would like to find someone going to vegas to save me freight my issues i know thanks again bryan

GTX JOHN · 03-24-2010, 02:58 AM

Ralph Compson out North Dakota just bought 2 cars from me today maybe he is going by you. Call me in afternoon and I give you some private advise and combinations to run....you have my number I will be headed to Tucson and have a bunch of time on road... Kids car over 1.0 under new index...we found a lot this winter, need somebody else to run 400 combo!

Jeremy · 03-24-2010, 10:21 AM

Ed, I have around 25 plus - 340 untouched heads that at least one port is well over the cc's limit. I spent alot of money last year to find 4 heads that would pass.

Chris Hill · 03-24-2010, 05:12 PM

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

Jim Wahl · 03-24-2010, 09:49 PM

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

GTX JOHN · 03-24-2010, 09:51 PM

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 · 03-24-2010, 11:17 PM

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.

Chris "drooze" Wertman · 03-25-2010, 12:11 AM

Quote:

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.......

03-23-2010, 10:05 PM	#1
herbjr VIP Member Join Date: Apr 2005 Location: Greensboro NC Posts: 1,027 Likes: 1 Liked 83 Times in 32 Posts	Re: 1972 Dodge j/sa Well I can tell you a 360 racer had 3 sets of heads that stock were all big. UNTOUCHED. The specs may be off a little. Core shift is the problem.

03-23-2010, 10:46 PM	#2
bdixon Member Join Date: Dec 2009 Location: mitchell sd Posts: 289 Likes: 4 Liked 15 Times in 7 Posts	Re: 1972 Dodge j/sa Sorry for the brain fart>>>>>400 bb is my motor i have a set of 452 heads that someone has cut too much and also looks like some sort of acid might have been used on the intake side........my other problem is i live out in south dakota and emailed gtx john and can get some parts from him but would like to find someone going to vegas to save me freight my issues i know thanks again bryan

03-24-2010, 02:58 AM	#3
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,734 Likes: 2,803 Liked 2,487 Times in 698 Posts	Re: 1972 Dodge j/sa Ralph Compson out North Dakota just bought 2 cars from me today maybe he is going by you. Call me in afternoon and I give you some private advise and combinations to run....you have my number I will be headed to Tucson and have a bunch of time on road... Kids car over 1.0 under new index...we found a lot this winter, need somebody else to run 400 combo! Last edited by GTX JOHN; 03-24-2010 at 03:10 AM.

03-24-2010, 10:21 AM	#4
Jeremy Junior Member Join Date: Dec 2002 Posts: 95 Likes: 0 Liked 1 Time in 1 Post	Re: 1972 Dodge j/sa Ed, I have around 25 plus - 340 untouched heads that at least one port is well over the cc's limit. I spent alot of money last year to find 4 heads that would pass.

03-24-2010, 05:12 PM	#5
Chris Hill Senior Member Join Date: Jan 2002 Posts: 655 Likes: 8 Liked 244 Times in 26 Posts	Re: 1972 Dodge j/sa What do you think about a 383 as a 71 model? I was thinking these two combinations to be similar performance wise. __________________ Chris Hill https://ihmusedparts.com

03-24-2010, 09:49 PM	#6
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 668 Liked 683 Times in 129 Posts	Re: 1972 Dodge j/sa I bought 4 sets of 360 heads from a reconditioner and two of the eight heads were over. Jim __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association. Last edited by Jim Wahl; 03-24-2010 at 09:51 PM.

03-24-2010, 09:51 PM	#7
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,734 Likes: 2,803 Liked 2,487 Times in 698 Posts	Re: 1972 Dodge j/sa 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?

03-24-2010, 11:17 PM	#8
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 530 Likes: 424 Liked 242 Times in 81 Posts	Re: 1972 Dodge j/sa 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. __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.

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