Author: NHRA

Issued:        Sept 25, 1979     
Revised:       11/12/79, 03/21/91, 11-21-94, 2-24-96, 2-16-98, 7-1-99
Bulletin #:    BUI-79    Page 1 of 1

Specifications for the   1979 Buick engines

H.P. Disp.  C.R. Ind. Make Model/Transmission               Manifold  R.R. Lifter	Head cc   Notes 

 85  151    9.45 1-2  Holl R-8775,8777,8776,8778		   500441  1.75 H	67.4          
 90  151    8.78 1-2  Roch 17059675,7,674,676		 10002948  1.75 H	48.8          
105  196    9.92 1-2  Roch 17059193,4,184,194		  1262204  1.55 H	42.7          
115  173    9.33 1-2  Roch 17059651,751,763,651,750,760	   476512  1.50 H	48.0          
115  231    9.32 1-2  Roch 17059191,180,190			  1262470  1.55 H	42.7          
130  305    9.39 1-2  Roch 17059134,134,434			 14007372  1.50 H	59.1        1 
140  301    8.74 1-2  Roch 17059160				100000516  1.50 H	67.5                           
150  301    8.74 1-4  Roch 17059271,2				100000518  1.50 H	67.5
155  305    9.39 1-4  Roch 17059203,202,502,582		 14007376  1.50 H	59.1        2,4                   
155  350    9.70 1-4  Roch 17059241				  1249169  1.55 H	50.0        3
160  350   10.30 1-4  Roch 17059203,11,202,210,502,582	   346249  1.50 H	63.3        4
170  231    9.32 1-4  Roch 17059240,2,243    TURBO		  1261568  1.55 H	42.7        3
175  403    9.18 1-4  Roch 17059250,3,256,257,258		   411990  1.60 H	71.7        3                        

Notes

1    Alt manifold - 14007374   
2    Alt manifold - 14007378,346249      
3	Carb sizes - 1375x2250/1218xAV
4	Carb sizes – 1375x2250/1093xAV
                                                                                                                                        
            Deck      Piston Type                   
H.P. Disp   Cl     Dish/Dome    Ht/Vol	Valves   Cam Lift  Springs   	   Gasket   Head Cast   Notes
                                                                                                                                   
 85  151   .000     Flat      N.A.  N.A.	1720/1500 406/406  Outer Only	    .027    498597
 90  151   .000    Dished    .246" 23.64cc	1720/1500 406/406  Outer Only	    .032    100000702
105  196   .050    Dished    .055"  5.52cc	1710/1500 340/401  Outer w Damper .018    1262098,1262095 
115  173   .015     Flat	N.A.    N.A.	1600/1307 347/394  Outer w Damper .038    476503
115  231   .035     Dish	.240" 22.70cc	1710/1500 401/401  Outer w Damper .018    1262098,1262095 
130  305   .002     Dish	.107" 12.44cc	1725/1505 373/410  Outer w Damper .016     376450,462614  
140  301   .018     Flat      N.A.   N.A.	1720/1500 364/364  Outer Only	    .038     526211,01,02    
150  301   .018     Flat      N.A.   N.A.	1720/1500 364/364  Outer Only     .038     526211,01,02    
155  305   .002     Dish      .107" 12.44cc	1845/1505 373/410  Outer w Damper .016     376450,462614   
155  350   .010     Dish      .245" 22.70cc	1880/1555 329/344  Outer w Damper .041     1243452   A,B 
160  350   .002     Dish      .064"  9.92cc	1945/1505 390/410  Outer w Damper .016     376450,462624        
170  231   .035     Dish      .240" 22.70cc	1710/1500 340/401  Outer w Damper. 018     1261377,25504443
175  403   .002     Dish      .138" 16.98cc	2000/1500 474/474  Outer w Damper .030     554717             

A If TRW L2342 piston is used the legal dish depth spec will 
  change from .245" to .230".
B PISTON DISH DEPTH ADJUSTMENTS- BADGER B422 .218 DEEP, ENGINE TECH P1504 & SILVOLITE 1746 .215 DEEP, BADGER P422A .210 DEEP, GM #25527180 .210 DEEP