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Small Block Chevy Bore & Stroke Specifications

CID Years Bore Stroke Rod Jrnl. Dia. Main Jrnl. Dia.
262 1974-76 3.671 3.100 2.100 2.450
265 1955-57 3.750 3.000 2.000 2.300
267 1979-82 3.500 3.480 2.100 2.450
283 1957-67 3.875 3.000 2.000 2.300
302 1967 4.000 3.000 2.000 2.300
302 1968-69 4.000 3.000 2.100 2.450
305 1976-98* 3.767 3.480 2.100 2.450
307 1968-73 3.875 3.250 2.100 2.450
327 1962-67 4.000 3.250 2.000 2.300
327 1968 4.000 3.250 2.100 2.450
350 1967-99+ 4.000 3.480 2.100 2.450
400 1970-76 4.125 3.750 2.100 2.650

*Production of 305 car engines ended in 1992.

+Production of 350 car engines ended in 1997.


 Small Block Chevy Casting Numbers

Casting No. CID Years Used Used In
360851 262 1974-76 Monza
3703524 265 1955 Passenger cars
3720991 265 1956-57 Trucks & passenger cars
14010280, 14016376, 471511 267 1979-82 Passenger cars
3731548 283 1957  
3556519, 3737739, 3849852 283 1958-61 Trucks & passenger cars
3789935, 3849852, 3864812 283 1962-64 Trucks & passenger cars
3849852, 3849935, 3896944, 393288 283 1965-67  
See Note 1 302 1967 302 Camaro
See Note 2, 389257 302 1968-69 302 Camaro
14010201, 14016381, 14010202, 14010203 305 1980-84 Passenger cars & light trucks
460776, 460777, 460778, 361979 305 1978-79 Passenger cars & light trucks
3914653, 3914636, 3932373, 3970020 307 1968-73 Trucks & passenger cars
3959512 327 1962-63  
3782870, 3789817, 3794460, 3852174, 3858180 327 1962-64 Trucks & passenger cars
3892657, 3782870, 3903352, 3789817, 3858174, 3892657 327 1964-67 Trucks & passenger cars
3791362 327 1965-67 Chevy II
3970041, 3814660, 3970010, 3914678, 3932386, 3955618 327 1968-69 Corvette, Camaro, and other high-performance applications
3855961, 3932388, 3958618, 3970014, 6259425 350 1968-76 Passenger cars (2-bolt mains)
3956618, 3970010*, 3932386 350 1968-79 Truck and high-performance applications (4-bolt mains)
14016379, 366245 350 1978-79 Passenger cars & light trucks (dip stick in pan)
140029, 14010207 350 1980-84 Passenger cars
3951511 400 1970-73 Heavy-duty trucks & passenger cars (4-bolt mains)
3951509, 3030817 400 1970-73 (2-bolt mains)

  * Sometimes machined for 2-bolt mains.

Note 1: Small-journal 302-CID engine uses 327 block.

Note 2: Large-journal 302-CID engine uses 350 block.


 

Small Block Chevy Cylinder Head Casting Numbers

Casting No. Years Used Used In
333882 '70-76 400
354434 '75-76
'76-79
262
305
358741 '76-79 305
3030817 '74 400 2-bolt
3636839 '55 265
367450 '75-76 262
3703524 '55 265
3713358 '55-56 265 truck
3713569 '55-56 265 truck
3725306 '56-57 265
3720991 '56-57 265
3731262 '56 265 2x4 bbl carb Corvette
3731539 '57-61 283 truck
3731544 '55-61 265-283
3731548 '57-62 283
3731554 '57
'58-62
283 car & truck
283
3731556 '57 283 truck
3737465 '60-61 283
3737739 '57-62 283 and 283 Corvette F.I.
3737775 '62-67 283-327
3740997 '57 283
3743056 '58 283 truck
3743096 '62-67 327 GMC truck
3747363 '57-62 265
3748720 '57-58 283 1x4 or 2x4 bbl carb or F.I Corvette
3748770 '55-61
'58-62
'57
265-283
283
283
3748772 '58-62 283
3755537 '57-62 283
3755539 '58-62 283 truck
3755549 '57-62 283 car & truck
3755550 '57-62 283
3755585 '62-67 327 GMC & truck
3756519 '57-62 283 & 283 Corvette F.I.
3760116 '59 1x4 bbl carb or F.I. Corvette
3767460 '62-64 283 or 327
3767462 '62-67 327
3767754 '60-61 283
3767792 '60-67 283 car & truck
3770126 '67-70 327-350
3774682 '60-64 283-327 cars & trucks
3774684 '62-64 283-327 Chev. trucks & GMC
3774692 '58-64 283
3782461 '62-70 307-327-350
3782870 '62-67 327 & 327 Corvette
3782879 '62-67 327 & 327 Corvette
3789817 '62-67 327 & 327 Corvette
3789935 '57-62 283
3790721 '64-67 283
3792563 '65-67 327
3795896 '63-72 283-307-327
3798996 '63-67 327
3814480 '60-67 283-327
3814482 '62-67 327-350
3817680 '59 283 4 bbl & F.I.
3817681 '62-67 327-350
3817682 '61-62 283 2 bbl
3836839 '55 265
3836842 '57-67 265-283-327
3837064 '56-62 265-283
3837065 '55-56 265 truck
3837739 '57 283 & 283 truck
3848720 '57-58 283
3849852 '57-67 283
3849935 '65-67 283
3852172 '62-64 327
3854520 '62-67 283-327
3855961 '68-76 350 2-bolt
3858174 '65-67 327
3864812 '57-67 283 & 283 truck
3867802 '57-60 283 F.I. Corvette
3876132 '62-67 327 & 327 Corvette
3876775 '60-67 283-327
3884520 '60-67 283-327
3981462 '62-67 302-327-350
3891492 '64-67 327
3892657 '65-67 327
3896944 '65-67 283
3911032 '68-69 307-327
3912264 '58-62 283 car & truck
3912265 '63-64 283
3912311 '67 350
3912313 '65-67 327
3914636 '68-73 307
3914660 '68-69 327 & 327 Corvette
3914678 '68-69 327 & 327 Corvette
3917264 '67 302
3917290 '68-69 307-327
3917291 '68-69
'67-70
327-350
302-327
3917292 '68 327
3917293 '68-69 307
3921175 '66 327 (350 HP)
3927185 '68-76 307-327-350
3927186 '68-72 302-327-350
3927187 '69-70 302-350
3927188 '69 307-327-350 light truck
3928454 '68 307
3928455 '68 302-327 (325 HP & 350 HP)
3928494 '68 327 hi-performance 4 bbl & 350
3928495 '68 327 std. & 327 (250 HP)
3931633 '68-73 307
3391635 '68-76 305
3931637 '68-69 327 & 327 Corvette
3931638 '68 327 truck
3931639 '68 302
3932373 '68-73 307
3932386 '68-76 327-350-350 4-bolt & 327 Corvette
3932388 '68-76 350 2-bolt
3932441 '67-72 327-350
3932454 '68-69 307
3932882 '76 400
3946812 '69 350 truck
3946813 '69-70 350
3947041 '69-70 350
3951509 '74 400 2-bolt
3951511 '70-73 400 4-bolt
3951598 '70-71 400 2 bbl
3956618 '68-76 350 4-bolt
3958618 '68-76 350 2-bolt
3964286   350
3970721 '64-67 283
3970010 '68-76 350 4-bolt
3970020 '68-73 307
3970126 '67-70 327-350
3973487 '68-71
'71
350 high performance
350 trucks & passenger cars
3973493 '72-76 400
3986339 '68-76 307-350
3991492 '69-70 350
3998916 '72 400
3998991 '68-76 307-350
3998993 '68-76 350 low performance cars & trucks
3998997 '72
'78-79
'78-79
'80-84
400
305
350
350
468642 '78-79
'80-84
350
350
517513 '79 267
6259425 '68-76 350 2-bolt
6260856   350
14014415 '80-82 267
14014416 '80-84 305
14022301 '80-84 305
14022601 '80-82 267

GM Automatic Transmision Gear Ratios

Transmission Type 1st Gear 2nd Gear 3rd Gear             4th Gear
Power Glide 1.76 or 1.82 1.00     
TH350 2.52 1.52 1.00   
TH400 2.48 1.48  1.00   
700R4  3.06 1.63 1.00 0.70
200R4 2.74 1.57  1.00  0.67 
4L60E* 3.06 1.63 1.00  0.70
4L80E 2.48 1.48  1.00  0.75 

 
* The 4L60E and 700R4 are basically the same transmision except that 4L60E is electronically controlled while 700R4 is not.
   The 4L60E is hardly used for in non-EFI retrofit applications because a MUCH stronger 4L80E can be used with the same amount of  difficulty and cost. Both the 4L60E and 4L80E require computer controllers from the aftermarket.