Editing Pontiac V8 engine (section)
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==Parts interchangeability== Based on info from teufert.net and Ken's Speed & Machine. <table border="2" cellpadding="2" cellspacing="0"> <tr valign="center" align="middle"><td bgcolor="#DDDFFF"><font size="4"> <strong>PART:</strong></font></td> <td bgcolor="#DDDFFF"><font size="4"><strong>INTERCHANGE YEARS/NOTES:</strong> </font></td></tr> <tr valign="center" align="middle"><td ><strong>Block:</strong></td> <td >1955,1956,1957,1959-'60,1961-'64 (full size V8), 1964-'69 (Tempest/Grand Prix V8), 1970-'79<br> '''Note:''' No block mount starter holes on pre-1964 blocks</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Bellhousing:</strong></td> <td >1955, 1956-'57, 1958-'60, 1961-'64 (fullsize), 1964-'79 (all except 1964 fullsize)</td></tr> <tr valign="center" align="middle"><td ><strong>Oil pump:</strong></td> <td >1955-'58, 1959-'79; all use the same oil pump shaft</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Oil pan:</strong></td> <td >1955-'58, 1959-'60, 1961-'63, 1964, 1965-'71, 1972-'79<br>'''Note:''' Same pan can be used from 1964-on with proper rear pan seal</td></tr> <tr valign="center" align="middle"><td ><strong>Windage tray:</strong></td> <td >1955-'58, 1959-'60, 1961-'62, 1963, 1964, 1965-'72<br>'''Note:''' #2 and #4 main cap holes are for windage tray mounting. After 1972 some blocks have no provision for windage tray mounting. Center main cap holes (#3 cap) are for lower dipstick bracket</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Oil filter:</strong></td> <td >1955-'59, 1960-'79</td></tr> <tr valign="center" align="middle"><td ><strong>Oil filter mount:</strong></td> <td >1955-'59, 1960-'62, 1963, 1964-'70 (straight), 1967-'79 (tilted)<br>'''Note:''' There are basically two different oil filter housings: Pre-1970 straight mount and the later angled housing mount. Also special adapter for a rearward facing oil filter housing to clear RA III and IV exhaust</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Crankshaft:</strong></td> <td >1955-'56, 1957-'58, 1959-'66 (3" main), 1967-'78 (3" main), 1962-'76 (3.25" main).<br> For all engines after 1964: 326, 350, 389 and 400 use the 3" mains. 421, 428 and 455 use the 3.25" mains.<br>{{!}}More at '''[[Pontiac V8 engine #Cranks|Cranks]]'''</td></tr> <tr valign="center" align="middle"><td ><strong>Harmonic balancer:</strong></td> <td >1955-'62, 1963, 1964, 1965, 1966, 1967, 1968-'79<br> '''Note:''' Some 1977-up 400 and 301 use a crankshaft hub without a rubber torsional ring</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Flywheel/<br>Flexplate:</strong></td> <td >1955-'57, 1958-'60, 1961-'62, 1963, 1964-'79<br>'''Note:''' There are two different diameter flanges used on the 400 crank after 1975: 2-1/2" and 2-3/4".<br> All 350/389/400/428 and 455 with same flange will interchange.<br> Also watch the pilot ID on early pre-1964 389 Armasteel cranks when using an automatic<br>{{!}}More at '''[[Pontiac V8 engine#Modern GM transmission behind early Pontiac engine|Modern GM transmission behind early Pontiac engine]]'''</td></tr> <tr valign="center" align="middle"><td ><strong>Connecting rods:</strong></td> <td >1955-'79<br> '''Note:''' Before 1962 forged rods were installed, but weaker then the later cast rod unless heat treated and prepped. Swapping to the earlier lighter forged rod requires re-balancing<br>{{!}}More at '''[[Pontiac V8 engine#Rods|Rods]]'''</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Pistons:</strong></td> <td >Must match the bore, stroke, and head series<br> '''Note:''' 455 SD piston use SD rod unless the pin boss is internally milled. <br>{{!}}More at '''[[Pontiac V8 engine #Pistons|Pistons]]'''</td></tr> <tr valign="center" align="middle"><td ><strong>Wrist pins:</strong></td> <td >1955-'57, 1958-'62, 1963-'65, 1966-'79 Some SD pins are longer</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Heads:</strong></td> <td >1955, 1956-'60, 1961-'66, 1967-'79<br> '''Note:''' Valve centers were widened in 1967 for larger valve diameters.<br>{{!}}More at '''[[Pontiac V8 engine #Heads|Heads]]'''</td></tr> <tr valign="center" align="middle"><td ><strong>Rocker arm:</strong></td> <td >1955, 1956-'60, 1961-'64, 1963 (421 HO)-'64 (GTO Tripower), 1965, 1966, 1967 (326 only), 1967-'79<br>'''Note:''' Ram Air IV engines used a 1.65 ratio, the pushrod holes were factory enlarged for this.<br> All other heads have to be modified to use 1.65 rocker arms</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Pushrods:</strong></td> <td >1955-'60, 1961-'66, 1967-'76 (except longer Ram Air IV)<br> '''Note:''' Match pushrod to year of head</td></tr> <tr valign="center" align="middle"><td ><strong>Valve covers:</strong></td> <td >1955-'57, 1958-'60, 1961-'62, 1963-'66, 1967-'79</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Lifters:</strong></td> <td >1955, 1956-'79</td></tr> <tr valign="center" align="middle"><td ><strong>Camshaft:</strong></td> <td >1955-'79 (except Ram Air V/455 Super Duty).<br>{{!}}More at '''[[Pontiac V8 engine #Cams|Cams]]'''</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Intake manifold:</strong></td> <td >1955, 1956, 1957-'58, 1959-'60, 1961-'62, 1963-'64, 1965-'71, 1972-'79<br>{{!}}More at '''[[Pontiac V8 engine #Intakes|Intakes]]''' and '''[[Pontiac V8 engine #Heat cross over|Heat cross over]]'''<br></td></tr> <tr valign="center" align="middle"><td ><strong>Exhaust manifolds:</strong></td> <td >1955, 1956, 1957, 1958, 1959-'79 (D-port); 1968-'74 (round port)<br> '''Note:''' While the manifolds physically fit the engine, the oil filter mount, steering box, and chassis configurations all need to be considered if using a non original manifold</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Distributor:</strong></td> <td >1955-'79 (except Ram Air V/455 Super Duty)</td></tr> <tr valign="center" align="middle"><td ><strong>Starter:</strong></td> <td >1955, 1956-'60, 1961-'64 (fullsize), 1964 (Tempest/Grand Prix)-'79</td></tr> <tr bgcolor="#F1F1F1" valign="center" align="middle"><td ><strong>Timing Cover:</strong></td> <td >1955-'59, 1960, 1961-'62 (inc. Tempest "Trophy" 4), 1963, 1963 1/2-'65, 1966-'67, 1968, 1969-'79<br>The only difference in the 1968-up timing covers are the timing indicator markings.<br> Some late model 400 and 301 covers have a plastic bolt-on tab.<br>{{!}}More at '''[[Pontiac V8 engine #Timing covers|Timing covers]]'''</td></tr> </table><br> ===Modern GM transmission behind early Pontiac engine=== Due to the differences in the early crank flange and the lack of a drilled block mounted starter mount on the block, a TH 350/400, etc. tranny won't work behind an early (pre ~1964) engine. [http://www.wilcap.com/pontiac.html#287350 Wilcap] and [http://www.transmissionadapters.com/early_pontiac.htm Bendtsen's] sell kits that allows the later trannies to bolt up behind these early engines.
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