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#1
12-12-2019, 01:18 PM
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Pontiac Aftermarket Block?
Does anyojne have info on who is making the aftermarket (iron) blocks for these Pontiacs?
Not looking for vendors, looking for mfr? Thanks, Gary in N.Y. P.S. On a side note, would also appreciate any feedback on builders who have experience with these castings! Are there any drawbacks/pitfalls with respect to the necessary machining?? |
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#2
12-12-2019, 02:33 PM
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Two manufacturers, KRE, and All Pontiac
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62' Lemans, Nostalgia Super Stock, 541 CI, IA2 block, billet 4.5" crank, Ross, Wide port Edelbrocks, Gustram intake, 2 4150 style BLP carbs, 2.10 Turbo 400, 9" w/4:30 gears, 8.76 @153, 3100lbs |
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#3
12-12-2019, 02:49 PM
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They are the manufacturers but use an independent foundry to pour them.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#4
12-12-2019, 08:43 PM
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Spotts Perf in Hatfield preps & assembles these blocks
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#5
12-13-2019, 01:12 PM
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Doesn't Kaufmann have part ownership in the foundry that pours the MR-1's?
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68 GTO,3860# Stock Original 400/M-20 Muncie,3.55’s 13.86 @ 100 Old combo: 462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's. 1968 Pontiac GTO : 11.114 @ 120.130 MPH New combo: 517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's 636HP/654TQ 1.452 10.603 @ 125.09 http://www.dragtimes.com/Pontiac-GTO...lip-31594.html |
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#6
12-13-2019, 01:37 PM
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MR-1 block
In the beginning it was Tri-Cast foundry https://www.tri-cast.com/ Post 338 https://forums.maxperformanceinc.com...i-Cast&page=17 .
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#7
12-13-2019, 09:20 PM
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Quote:
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#8
12-13-2019, 09:39 PM
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Yep ! And technically speaking the MR-1 is actually a K&M Performance Parts block.
.
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#9
12-13-2019, 09:58 PM
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Quote:
What was so funny about that whole deal was I was right and stomped their ass on the track up until I sold the car... 3 years...they blew up countless engines in that period...lol Their argument in court was I tried to harm their business... not the facts about the block I claimed... It all could have been easily averted... |
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#10
12-13-2019, 11:07 PM
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE Last edited by Steve C.; 12-13-2019 at 11:22 PM. |
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#12
12-14-2019, 01:44 AM
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 Stan
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Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
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#13
12-14-2019, 09:37 AM
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Quote:
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#15
12-14-2019, 09:47 AM
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Quote:
They are copies of the OEM block but stronger |
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#17
12-14-2019, 10:46 AM
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They are not saying they are OEM GM blocks, They are calling them an aftermarket Pontiac block. Same as an intake manifold, oil pan, etc.
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66 GTO Nostalgia Super Stock/Street Legal Car 421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99 Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
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#18
12-14-2019, 11:38 AM
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I have machined both and I have built both. I would have no issues using either one.
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http://www.youtube.com/watch?v=t9eWgLd0q-U |
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#19
12-14-2019, 11:55 AM
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Quote:
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#20
12-14-2019, 01:27 PM
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Concerning IA II blocks only. They come from All Pontiac with semi-finished cylinder bores. Pan rail, line bore/hone is done, deck is finished, oil filter pad, front and rear faces of block are finished. Every batch of blocks as they get newer, come in better and better. They are well within OE specs. for deck height/squareness, housing bore dimensions. If you want the block absolutely dead nuts perfect, you will need to have some machining performed just like ANY aftermarket block, or OE block. Current IA II blocks are as nice as any Merlin, Dart, World or any other quality aftermarket block. I can't comment on the MR 1, because I haven't built one. The shop I work out of has done 2 or 3, and no real issues to report. I have machined about 10 IA blocks. They are light years better than a 40+ year old OE block in strength and materials.
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