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Forum: Pontiac - Street 02-11-2024, 02:16 PM
Replies: 81
Views: 4,926
Posted By Tim Corcoran
Breaking in your new engine and Break In Oil

There is a lot of controversy about how to protect your new rebuilt engine during initial start up, on the dyno, at the track or on the street. With high levels of flat tappet cam failures this has...
Forum: Pontiac - Street 02-11-2024, 08:29 AM
Replies: 398
Views: 70,697
Posted By Stan65
Here’s a picture of the bones on cylinder’s 7 and...

Here’s a picture of the bones on cylinder’s 7 and 8. I had to modify these as I expected because of the difference in the casting in these locations, but they fit and function as expected.

Not...
Forum: Pontiac - Street 02-06-2024, 12:13 PM
Replies: 52
Views: 2,372
Posted By dataway
I bought those Mellings about five years ago, I...

I bought those Mellings about five years ago, I think from Rock Auto. Made in USA, and they appear the same as a somewhat older set of AC-Delco lifters.

The capped Mellings are what is installed...
Forum: Pontiac - Street 02-06-2024, 11:26 AM
Replies: 52
Views: 2,372
Posted By Jay S
The plant making the Delphi GM hardened foot...

The plant making the Delphi GM hardened foot lifters quit mfg them a couple years ago. I think it was in Mexico.. Easy too spot them by the groove above the foot.

I haven’t bought a Lunati HFT...
Forum: Pontiac - Street 01-31-2024, 12:55 PM
Replies: 76
Views: 4,405
Posted By Bill S
My issue was I already have the Harland Sharp...

My issue was I already have the Harland Sharp 1.65 roller rockers which are actually a ratio of 1.69.
Off the shelf roller cams would put overall lift too high for my valve length, causing retainer...
Forum: Pontiac - Street 01-30-2024, 02:52 PM
Replies: 57
Views: 3,279
Posted By Stan Weiss
Flat Tappet Camshafts & More

Interesting Video

https://www.youtube.com/watch?v=NYtMCZYnF7I

Stan
Forum: Pontiac - Street 01-26-2024, 04:56 PM
Replies: 76
Views: 4,405
Posted By Bill S
I posted my lifter / cam failure two years ago. ...

I posted my lifter / cam failure two years ago. I had two lifters / lobe failures.
I did a complete teardown / clean / and rebuild with honing, new rings, bearings. Sent the heads out for...
Forum: Pontiac - Street 01-15-2024, 09:03 PM
Replies: 39
Views: 2,453
Posted By AG
https://www.summitracing.com/parts/crt-m6907/make/...

https://www.summitracing.com/parts/crt-m6907/make/pontiac
Forum: Pontiac - Street 01-13-2024, 11:39 AM
Replies: 39
Views: 2,453
Posted By glhs#116
What Is The Low Down On Carter Muscle Car Fuel Pumps

1971 Trans Am

I know there's all sorts of better options for when you need more fuel. I know I'd be better off with an in-tank electric, full size return and so on. I know RobbMc makes these big...
Forum: Pontiac - Street 01-10-2024, 03:32 PM
Replies: 16
Views: 1,539
Posted By jwcfbd
It's a SCAT rotating assembly 41661BI with ICON...

It's a SCAT rotating assembly 41661BI with ICON forged pistons.
Forum: Pontiac - Street 01-10-2024, 07:06 AM
Replies: 264
Views: 15,859
Posted By dataway
Anyone taking over/under for how many pages?

Anyone taking over/under for how many pages?
Forum: Pontiac - Street 01-08-2024, 04:11 AM
Replies: 264
Views: 15,859
Posted By Kenth
The 1967 Pontiac Service Manual is correct...

The 1967 Pontiac Service Manual is correct regarding piston/rod orientation as showned is Fig. 6-80 and Fig. 6-136.

FWIW
Forum: Pontiac - Street 12-10-2023, 09:13 AM
Replies: 60
Views: 7,530
Posted By Cliff R
Thanks Kenny. I survived the party even though I...

Thanks Kenny. I survived the party even though I got into some Bulliet 10 year over ice and Evan Williams Egg Nog topped with whipped cream and fresh ground nutmeg......YUMMY!...
Forum: Pontiac - Street 11-18-2023, 09:27 AM
Replies: 36
Views: 1,822
Posted By Formulajones
Around here redoing 50 year old cast iron heads...

Around here redoing 50 year old cast iron heads is a fairly expensive proposition. That is going through them and doing them right. First we have to assume the head castings are in good shape.
...
Forum: Pontiac - Street 11-17-2023, 06:36 AM
Replies: 36
Views: 1,822
Posted By Kenth
The #670 heads flows plenty good for the specs...

The #670 heads flows plenty good for the specs and usage of your car.
Only porting the heads will degrade driveabilty, waste of funds.
Buy new tires, exhaust system, new toys for the kids or a...
Forum: Pontiac - Street 11-12-2023, 12:54 AM
Replies: 46
Views: 3,837
Posted By grivera
Another informative video from Powell Machine -...

Another informative video from Powell Machine - reinforces the prevailing issue is machining rather than hardness. That being said, if I bought FT lifters, I would opt for the DLC treatment:...
Forum: Pontiac - Street 10-17-2023, 08:32 AM
Replies: 11
Views: 819
Posted By Mr Anonymous
Regarding bore scopes, I recently got this one...

Regarding bore scopes, I recently got this one off the jungle site and it works well, plus its very inexpensive. I have an android phone, and I can tell you it works great. I got great pictures of...
Forum: Pontiac - Street 10-16-2023, 01:53 PM
Replies: 31
Views: 1,375
Posted By PAUL K
Butler's head gaskets are the most reliable for a...

Butler's head gaskets are the most reliable for a high performance street build.
Forum: Pontiac - Street 10-12-2023, 02:06 PM
Replies: 44
Views: 3,180
Posted By PAUL K
Balanced rotating assemblies

I didn't want to mess up another gentleman's thread so I started this one.

Please tell me your expectations when you purchase a "balanced" rotating assembly. Are you thinking they will be balanced...
Forum: Pontiac - Street 09-28-2023, 09:53 AM
Replies: 194
Views: 14,060
Posted By mgarblik
Good traffic on this thread. Before I posted it,...

Good traffic on this thread. Before I posted it, I had a few back and forth PM's with B-man about how and where to post this thread. The street section gets allot of traffic so he thought this...
Forum: Pontiac - Street 09-27-2023, 02:17 PM
Replies: 194
Views: 14,060
Posted By mgarblik
The car is a low option automatic trans model. ...

The car is a low option automatic trans model. Standard interior, AM-FM stereo, 8 track, front console, rear defogger. All important SD engine of course. Hood Bird delete. AC would have been nice...
Forum: Pontiac - Street 09-09-2023, 08:37 PM
Replies: 80
Views: 4,341
Posted By MatthewKlein
You're free to carry on however you want. ...

You're free to carry on however you want.

Global coolant is superior to the old green. There was a time in the late 90s/early 2000s when it wasn't but those days are history. Global never needs to...
Forum: Pontiac - Street 08-15-2023, 08:26 AM
Replies: 32
Views: 1,507
Posted By PAUL K
Cool In addition a roller lifter failure can destroy...

In addition a roller lifter failure can destroy the block and do considerable damage. A flat tappet failure may cause a teardown and inspection but I've never seen catastrophic damage from a failure.
Forum: Pontiac - Street 08-12-2023, 01:53 PM
Replies: 816
Views: 64,961
Posted By Cliff R
Quit worrying about orientation and remove the...

Quit worrying about orientation and remove the engine, pull out all the rods and pistons and find out what it's wrong? It's likely the "builder" had too many beers the afternoon it was assembled and...
Forum: Pontiac - Street 06-13-2023, 01:42 PM
Replies: 38
Views: 2,682
Posted By Jay S
Happy Birthday! FWIW, if the bores are ok...

Happy Birthday!

FWIW, if the bores are ok plan B can be replace the problem piston with a good one and still move forward with the rering plan. I don’t know for sure, I would have to look, but I...
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