Forum: Pontiac - Street
05-24-2024, 11:26 AM
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Replies: 22
Views: 939
One of the reasons I am consider using the 557...
One of the reasons I am consider using the 557 block is the seller also has a set of 62 heads to go along. I suppose for the price I might buy the whole package and take the block to the scrap yard...
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Forum: Pontiac - Street
05-24-2024, 11:22 AM
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Replies: 7
Views: 398
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Forum: Pontiac - Street
05-23-2024, 01:28 PM
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Replies: 7
Views: 398
When can you use 4.125 pistons on a 400 block?
I am considering using .005 oversize pistons on a block that appears to have very little wear on the cylinder walls. I have a dial bore indicator gauge, but l am not a machinist. Best I can tell the...
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Forum: Pontiac - Street
05-23-2024, 01:09 PM
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Replies: 22
Views: 939
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Forum: Pontiac - Street
05-08-2024, 03:16 PM
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Replies: 12
Views: 953
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Forum: Pontiac - Street
03-13-2024, 01:52 AM
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Replies: 13
Views: 818
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Forum: Pontiac - Street
03-13-2024, 12:45 AM
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Replies: 13
Views: 818
Not to much information available. It is at a...
Not to much information available. It is at a shop having been removed for a LS swap. 100 percent complete carb, alternator,ps pump, starter, etc minus exhaust manifolds. it looks like it was just...
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Forum: Pontiac - Street
03-12-2024, 02:27 PM
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Replies: 13
Views: 818
Desired compression ratio
I just read the 411np are minus 14 cc pistons. I also now see they are 1.7 CP so if the deck was zero there is not much chance of any other piston being used. Though if someone uses those pistons I...
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Forum: Pontiac - Street
03-12-2024, 02:09 PM
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Replies: 13
Views: 818
8 brow pistons in rebuilt 400
I found a rebuilt 400 engine that may not have even had break-in oil changed yet. The price seems fair considering cost of machine work nowadays. But it has the 8 valve relief jobber cast 411np...
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Forum: Pontiac - Street
09-26-2022, 03:35 PM
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Replies: 18
Views: 1,556
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Forum: Pontiac - Street
09-26-2022, 01:54 AM
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Replies: 18
Views: 1,556
It is a little bit funny he had it listed for 6...
It is a little bit funny he had it listed for 6 months as a 350/400 combo. I had him take a few pictures. The block is a 9790071 the date ends with an 8 can't read the rest and 15 heads. No doubt it...
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Forum: Pontiac - Street
09-25-2022, 02:42 PM
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Replies: 18
Views: 1,556
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Forum: Pontiac - Street
09-19-2022, 11:25 AM
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Replies: 2
Views: 609
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Forum: Pontiac - Street
09-18-2022, 11:22 AM
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Replies: 18
Views: 1,333
That exact lifter was cylinder 8 exhaust it was...
That exact lifter was cylinder 8 exhaust it was the only one that had a light trail of rust going right to it from the cylinder head. Really just the smallest ring of rust on the top of it. The oil...
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Forum: Pontiac - Street
09-14-2022, 12:53 PM
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Replies: 18
Views: 1,333
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Forum: Pontiac - Street
09-13-2022, 03:08 PM
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Replies: 18
Views: 1,333
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Forum: Pontiac - Street
09-13-2022, 02:37 PM
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Replies: 18
Views: 1,333
Never started
The engine was never started since overhaul. I suppose the owner was trying to freshen it up. I guess to do this right I will need to add some more tools to my collection. My 65 Tempest had a Chevy...
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Forum: Pontiac - Street
09-12-2022, 09:19 PM
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Replies: 18
Views: 1,333
Special moly based oil
Well clearly the water mixed well with the oil. Cylinder 4 took the most water in. You can see how it darkened the cylinder wall at the skirt. Appears to be a low mileage engine with stock pistons....
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Forum: Pontiac - Street
09-10-2022, 01:06 PM
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Replies: 18
Views: 1,333
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Forum: Pontiac - Street
09-08-2022, 08:50 PM
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Replies: 16
Views: 1,993
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Forum: Pontiac - Street
09-04-2022, 02:59 PM
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Replies: 16
Views: 1,993
Good year Rochester for mild 400 & 200r4
I have a early 75 California smog version Rochester now. It needs an overhaul. From what I read the early 75 version is not as easy to tune as later ones. I will be using a 200r4 transmission. So I...
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Forum: Pontiac - Street
09-04-2022, 01:44 PM
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Replies: 35
Views: 4,438
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Forum: Pontiac - Street
08-31-2022, 11:33 AM
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Replies: 14
Views: 1,332
Budget
Yes the budget determines everything. I had planned on using the lowly 326 while saving up, plus the better machine shops at least by reviews left online have a 4-6 month wait here in Oregon. But I...
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Forum: Pontiac - Street
08-30-2022, 11:30 PM
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Replies: 3
Views: 790
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Forum: Pontiac - Street
08-30-2022, 08:29 PM
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Replies: 14
Views: 1,332
Down to just the camshaft and crankshaft to...
Down to just the camshaft and crankshaft to remove. Five of the top piston rings were broke in half but still where they belong.
I am hoping to get the parts down to a machine shop that will check...
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