Guest Spartacus3006 Posted December 12, 2005 Share Posted December 12, 2005 Ok guys I have procured a 1972 pontiac 350 engine for my swap into my 1985 t. Now my questions are if I am shopping for heads and other performance pieces for my motor are the same era chevy 350sb parts interchangeable with the pontiac 350sb? Also it appears this has 7a heads any opinion on these heads would be appreciated. If you were to switch head what would everybody go to Thanks Guys Quote Link to comment Share on other sites More sharing options...
dladow Posted December 12, 2005 Share Posted December 12, 2005 Pontiac motors are completely different from the SBC, and the heads are not interchangable. The Pontiac 350 - 455 engines all use the same big block design and outside dimensions. A good Pontiac website is Wallace Racing. Go to http://www.wallaceracing.com Dave Quote Link to comment Share on other sites More sharing options...
desert dog Posted December 12, 2005 Share Posted December 12, 2005 Snag a pair of the aluminum Edlebrock RPM heads for Pontiacs. They flow better than the 455 SD heads (best of the Poncho offerings IMO) and they are a fraction of the price. The Pontiac 350 is nothing like the Chevy 350. Quote Link to comment Share on other sites More sharing options...
Guest Spartacus3006 Posted December 12, 2005 Share Posted December 12, 2005 Cool so that means the heads for any of pontiac's engines during that year will bolt on? Sorry if this seems retaarted I am new to the great v8's. Thanks Guys anyinfo is appreciated Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted December 18, 2005 Share Posted December 18, 2005 pontiac engines are one of my favorite engines, but be aware the connecting rods and heads are the weak links heres some info you might use http://www.carcraft.com/techarticles/98359/ http://www.classicfirebird.com/tech/bprint.html http://www.classicfirebird.com/hand/hand.html http://www.highperformancepontiac.com/tech/0503hpp_block/ http://www.boyleworks.com/ta400/psp/blockID.html http://fiedlerh.home.att.net/PontiacCams.htm http://www.teufert.net/pontiac/cranks.htm http://www.rpmrons.com/Pontiac.html http://my.execpc.com/~lewenz/ http://www.jbp-pontiac.com/products/crankshafts.html http://www.pontiacpower.com/ http://members.tripod.com/futom/id113.htm Quote Link to comment Share on other sites More sharing options...
dr_hunt Posted December 18, 2005 Share Posted December 18, 2005 Grumpy's right, secure a set of eagle rods, keep the rpm's under 5500 and let the tire frying begin. BTW, I have a 1967 Pontiac GTO 325HP 400 with matching TH400 for sale, completely rebuilt by Al Budreaux former crew member of Sox and Martin, 200 miles on it, been sitting for years, probably needs disassembly and reassembly only. I'd take $700 for the whole thing. It has original high rise and carter 4bbl and I have an edelbrock high rise dual plane and edelbrock carb made for it as well, both would go with it. Also have pontiac headers NIB for the GTO as well, don't know if they'd fit the z. Quote Link to comment Share on other sites More sharing options...
Guest imagdget Posted December 18, 2005 Share Posted December 18, 2005 small block Chevys were a common motor in Pontiacs you just might have one it was the standard in Canada even the 400 small block was available. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted December 19, 2005 Share Posted December 19, 2005 the fastest way to spot a stock pontiac V8 vs a stock chevy V8 engine is to see if theres a valley pan sealing the lifter gallery under the intake manifold and see the distributor does not go thru the intake manifold(pontiac) as cheys has no seperate lifter gallery seal pan and the distributor DOES inseart thru the intakes rear Quote Link to comment Share on other sites More sharing options...
steve72z Posted December 19, 2005 Share Posted December 19, 2005 The 326 also had the same block. The head bolt pattern changed between 64 and 65. Quote Link to comment Share on other sites More sharing options...
desert dog Posted December 19, 2005 Share Posted December 19, 2005 In 1972 there were no SBC's in Pontiacs.... The other way to quickly tell if it is a Poncho V-8 is the width of the engine, and if it is stock the color of the paint on the motor. Pontiacs are silvery blue in color. I believe that in '72 Chevy's were still orange... The distributor also turns the opposite direction.... Quote Link to comment Share on other sites More sharing options...
waynekarnes Posted December 19, 2005 Share Posted December 19, 2005 pontiac never had small blocks or big blocks. all the modern pontiac V8 engines ( 1955 up ) are based on the same size block. however, you want to cruise those websites Grumpyz presented and talk with a machinist that knows pontiacs to get proper info. it has been a while since i've owned/worked on a pontiac ( had several, among em a factory 1965 tri power GTO 4 speed), but if i remember, due to water jacket passages and such, along with the bore size, not all pontiac heads are interchangeable. Quote Link to comment Share on other sites More sharing options...
ecp48 Posted December 20, 2005 Share Posted December 20, 2005 The nearest thing that Pontiac had to the small block, before adopting the GM corporate 350 was the Pontiac 301 (two banks of the Iron Duke four cylinder). In 1972, it should be the "Pontiac" 350, not a chevy/corporate GM. Quote Link to comment Share on other sites More sharing options...
steve72z Posted December 20, 2005 Share Posted December 20, 2005 I believe the 301 was a short stroked and decked 400 block. This engine was used mainly in the firebirds and was offered as a turbo as well. This engine s not well liked by most pontiac people. If I remember correctly the heads changed between 64 and 65. I have a 64 Tri power GTO and my tri-power will not mate up to the post 65 428 heads I have. Quote Link to comment Share on other sites More sharing options...
BrandonsZ Posted December 20, 2005 Share Posted December 20, 2005 In 1972 there were no SBC's in Pontiacs.... The other way to quickly tell if it is a Poncho V-8 is the width of the engine' date=' and if it is stock the color of the paint on the motor. Pontiacs are silvery blue in color. I believe that in '72 Chevy's were still orange... The distributor also turns the opposite direction....[/quote'] Chevys were still orange I can concur. Quote Link to comment Share on other sites More sharing options...
Guest Spartacus3006 Posted January 1, 2006 Share Posted January 1, 2006 Wow Guys thanks for all of the info, Grumpy those sites you gave me are a wealth of information! I just got back on the board after be ing out of town for a couple weeks boy was i pleased to get all of this info back from you guys. Out of all of the forums I have ever been on this is the most straightforward no BS bunch of guys ive ever seen on the net THNAKS A MILLION guys! Quote Link to comment Share on other sites More sharing options...
ballet Posted December 31, 2018 Share Posted December 31, 2018 (edited) Hello guys... I have 74 Pontiac Grandville 455cui. Can I use 350 heads on my 455 engine ? Could you help me please with your answers.. thanks a lot Edited December 31, 2018 by ballet Edit Quote Link to comment Share on other sites More sharing options...
NewZed Posted December 31, 2018 Share Posted December 31, 2018 (edited) Never mind. Not sure. Edited December 31, 2018 by NewZed Quote Link to comment Share on other sites More sharing options...
jhm Posted December 31, 2018 Share Posted December 31, 2018 ballet, you'll probably get more response if you post your question in the "Other V8Z" sub-forum: https://forums.hybridz.org/forum/46-other-v8z-tech-board/ Quote Link to comment Share on other sites More sharing options...
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