1972 Dodge j/sa
 

Hi am new to this site, i am having a midlife idiot moment and am building a 1972 dodge charger for stock class. The car has been sitting in a hanger since 1996 and has been a mild et car since 82, 67000 original miles. So far i have correct block and carb but needs built ,
need help with what is best for pistons,heads,cam and any other help
to make my life little easier would be very much helpful. Thanks Bryan

Re: 1972 Dodge j/sa
 

Straight out of the NHRA classification guide. Go to NHRA.com and this will be better presented. Look under Competition, Blueprint Specifications. Should be something here to get you started.



NHRA Technical Specifications
For
1972 Chrysler Corp. Motors

ROD
BORE STROKE DISPLACEMENT CYLINDERS LENGTH
3.390 2.530 91 4 4.966
3.030 3.390 97 4 6.051
3.406 3.640 198 6 6.700
3.406 4.126 225 6 6.700
3.910 3.313 318 8 6.123
4.040 3.313 340 8 6.123
4.000 3.580 360 8 6.123
4.340 3.380 400 8 6.358
4.320 3.750 440 8 6.770 4/29/2008


Issued: 25 Feb 1972
Revised: 4-2-76, 5-24-94, 2-16-96, 7-1-96, 2-16-98, 5-13-03


R.R.
HP Disp Mfg C.R. Ind. Make Model/Transmission Manifold Lifter Head cc Notes

55 91 P 9.40 1-1 Zeni 150 CDSET/ALL 1.50 M 13.3 A
70 91 P 9.40 2-1 Zeni 150 CDSET/ALL 1.50 M 13.3 A
80 97 P 9.03 1-2 MK DIDTA-14/AUTO 1.55 M 35.7 A
Carb sizes – 1260/1102
85 97 P 9.03 1-2 MK DIDTA-13/SM 1.55 M 35.7 A
Carb sizes – 1260/1102
100 198 DP 8.93 1-1 Holl 6363,6365/SM, 6364,6366/AUTO 2899959 1.50 M 54.0 B,1,6
Carb sizes – 1686/1313
110 225 DP 8.87 1-1 Holl 6153,6156/SM, 6154,6156/AUTO 2899959 1.50 M 54.0 B,1,6
Carb sizes – 1686/1313
150 318 DP 9.23 1-2 Cart BBD-6149,51/SM 6150,6152/AUTO 2951185,3698431 1.50 H 61.0 C
Carb sizes – 1437/1186
175 360 CDP 9.38 1-2 Holl 6162 or 6164/AUTO ONLY 3418435 1.50 H 64.7 D,5
Carb sizes – 1563/1410
190 400 DP 8.79 1-2 Cart BBD-6156/SM , 6154/AUTO 2951670 1.50 H 82.0 E,2
240 340 DP 9.32 1-4 Cart TQ-6138/SM, 6139/AUTO 3512100 1.50 H 64.7 D,3,7
Carb sizes – 1375x2250/1063xAV
245 440 CDP 8.76 1-4 Holl 6160-1A or 6290-1A/AUTO ONLY 3614014 1.50 H 82.0 E
Carb sizes – 1563x1563/1260x1313
255 400 DP 8.79 1-4 Cart TQ-6140,65/SM, 6090,6166/AUTO 3614046 1.50 H 82.0 E,8
Carb sizes – 1500x2250/1186xAV
265 400 DP 8.79 1-4 Cart TQ-6140,65/SM, 6090,6166/AUTO 3614046 1.50 H 82.0 E,4,8
Carb sizes – 1500x2250/1186xAV
280 440 DP 8.75 1-4 Holl 6252,6256/SM 6253,6257/AUTO 3614014 1.50 H 82.0 E
Carb sizes – 1563x1750/1260x1563
290 440 DP 8.75 1-4 Holl 6254/SM 6255/AUTO 3614014 1.50 H 82.0 E,4
Carb sizes – 1563x1750/1260x1563

C = Chrysler engines D = Dodge engines P = Plymouth engines
1 - Alt carbs - Holl 6260/ALL 2 - Alt carbs - Holl 6370/SM 6368/AUTO 3 - Alt carbs - Cart TQ-6394/ALL
4 - With fresh air package 5 - Alt manifold - 3698437,3698431
6 - Alt manifold - 3671619,3751630,3769979
7 - Alt manifold - 3614025,3671918,3698434,3830945,4095080,4100340,41 73915
8 - Alt manifold - 3698442,3830949

Cylinder Head Castings:
A = NONE B = 2843169, 3698447, 3614850, 3698995 C = 2843675, 3671585, 3769973, 4323302, 4448308, 4772576
D = 3418915, 4027596, 4071051, 3769974, 3671587, 4448308, 4772576
E = 3462346, 3751213, 3769902, 3769975, 4006452, 4120187, 4532287(SS ONLY)


Deck Piston
HP Disp Mfg Cl Type Height Vol Valves Cam Lift Gasket Springs

55 91 P .235 Flat 1430/1210 383/387 .020 Outer Only
70 91 P .235 Flat 1480/1210 443/443 .020 Outer & Inner
80 97 P .000 Dish .100 8.2 cc 1500/1224 395/395 .050 Outer Only
85 97 P .000 Dish .100 8.2 cc 1500/1224 395/395 .050 Outer Only
100 198 DP .075 Flat 1620/1360 410/419 .021 Outer Only
110 225 DP .140 Flat 1620/1360 410/419 .021 Outer Only
150 318 DP .056 Flat 1780/1500 390/420 .036 Outer Only
175 360 CDP .067 Flat 1880/1600 425/426 .046 Outer w Damp
190 400 DP .075 Flat 2080/1740 443/456 .020 Outer Only
240 340 DP .054 Flat w/n 1880/1600 462/473 .036 Outer w Damp
245 440 C .123 Flat 2080/1740 467/483 .019 Outer Only
245 440 DP .123 Flat 2080/1740 443/456 .019 Outer Only
255 400 DP .075 Flat 2080/1740 467/483 .020 Outer w Damp
265 400 DP .075 Flat 2080/1740 467/483 .020 Outer w Damp
280 440 DP .123 Flat 2080/1740 467/483 .019 Outer w Damp
290 440 DP .123 Flat 2080/1740 467/483 .019 Outer w Damp

Notes C = Chrysler engines D = Dodge engines P = Plymouth engines

Re: 1972 Dodge j/sa
 

"Somebody been readin de rool buk" He he : )

You are on top of it Robert.

Re: 1972 Dodge j/sa
 

Hey thanks for the rule book info,, got rule book and my stk number from nhra 5010 .. I know there has to be some better heads to use out of the many numbers offered,,also any help with best piston for my combonation, what cam company to start with, i have a good ati conv.
for the trans. any dos and donts for me would be a great help thanks
Bryan

Re: 1972 Dodge j/sa
 

Which engine are you using? 340 or 400? if you are going to use the big block you want to use the 452 head. they are plentiful and have good #'s. if it is the small block you want to find the 308 or 576 late model heads. But be careful as the ports run big right out of the junkyard. Pistons are builders preference its the rings that make all the difference. Cam is also builders preference.Steve Wann knows that big block combo REAL well he is who i would be askin.

Re: 1972 Dodge j/sa
 

Which engine are you planning on using?

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.

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

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!

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.