Double Hump Heads on 350? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ChopTop · 09-27-2002, 10:53 AM

Since we are on the subject. I used to have some data that listed 186 heads with chambers as large as 68cc. Anyone have anything to support this? I also was under the impression that angle plug heads came factory on some Corvette's. I'm sure at one point in time there were several of these castings available from you local Dealers parts counter, but those day's are long gone. As far as drilling acc. holes in heads, I would be cautious. I have a set of 291's that were drilled, but only after they were built up with weld in that area. There are water ports there and maybe others. If I were to prove the 350 thing I would look at the first Generation Camaro SS350.

OLDCHEV4X4 · 09-27-2002, 04:26 PM

Thanks for all your input guys!! I am going to print out this thread and MorTec's casting numbers list and Nasty Z-28's list. I think all this along with my "Chevy Small Block Factory Part & Casting Numbers Guide" will be enough proof, even if its not GM documentaion. If he still dosent believe me i'll send him here!!
Thanks, Randy

09-27-2002, 10:53 AM	#26
ChopTop Registered User Join Date: Jun 2001 Location: KINGWOOD TEXAS Posts: 515	Since we are on the subject. I used to have some data that listed 186 heads with chambers as large as 68cc. Anyone have anything to support this? I also was under the impression that angle plug heads came factory on some Corvette's. I'm sure at one point in time there were several of these castings available from you local Dealers parts counter, but those day's are long gone. As far as drilling acc. holes in heads, I would be cautious. I have a set of 291's that were drilled, but only after they were built up with weld in that area. There are water ports there and maybe others. If I were to prove the 350 thing I would look at the first Generation Camaro SS350. __________________ Member of the "Old Farts Club"

09-27-2002, 04:26 PM	#27
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	Thanks for all your input guys!! I am going to print out this thread and MorTec's casting numbers list and Nasty Z-28's list. I think all this along with my "Chevy Small Block Factory Part & Casting Numbers Guide" will be enough proof, even if its not GM documentaion. If he still dosent believe me i'll send him here!! Thanks, Randy __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania



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