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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.