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#21
12-14-2017, 09:21 AM
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I wonder if those pistons are cast.........
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... 
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#22
12-14-2017, 09:30 AM
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With two different depth valve notches I do not think it's cast, besides I think I see maching marks on the flat of the piston tops which would confirm that they are not cast!
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#23
12-14-2017, 09:32 AM
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????
Pistons oily or just nasty from a bunch of idle time with the 305 cam?
What's the hone marks in the cylinders look like....fresh or shiny from running a while Clay
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All the federales say,they could've had him any day They only let him slip away, out of kindness...I suppose Poncho & Lefty |
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#24
12-14-2017, 02:11 PM
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Here are the heads and bores. Car didn't have much run time on it so hoping it was the big cam, low compression situation. I have any other set of 101CC 6X heads that are fresh so I will end up using those instead of the 109CC heads. So what do you think from pics? |
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#25
12-14-2017, 03:07 PM
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Those valves are pretty darn sunk !
No wonder the heads are checking in at 109CCs! The Bores look good atleast!
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#26
12-14-2017, 04:36 PM
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Yeah, sunk, and are the center punch marks for marking cyl position???
__________________
1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down...
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#27
12-15-2017, 07:03 AM
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On taking a closer look at the Intake valves it looks like a 15 degree top cut of considerable width was added to the valve the valve job .
This will pick up very low lift flow which the 455 does not need as it only makes for more reversion up the Intake port during Camshaft over lap which then makes for degraded idle and a motor that comes on the Cam latter in rpm , but also cuts down on high lift flow a tad! The factory guys / designers new what they where doing in the heads by using a 30 degree intake seat with no top cut! I hope your next set of 6X heads does not have the same type of valve job?
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#28
12-15-2017, 07:28 AM
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Quote:
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#29
12-15-2017, 08:12 AM
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The Intake valve with the circles is a stocker and the six punch marks means in what back into the valve guide it came out from which further means that some if not all of the valve guides where likely not replaced during the rebuild.
How wad the oil usage on this motor?
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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