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Forum: Pontiac - Street 09-13-2012, 10:47 PM
Replies: 33
Views: 1,804
Posted By 69birdboy
My apologies. It didn't even occur to me that...

My apologies. It didn't even occur to me that this had happened and could be related until I pulled the filter off and found what looked like a mangled piece of valvetrain. It is curious that the...
Forum: Pontiac - Street 09-13-2012, 07:53 PM
Replies: 33
Views: 1,804
Posted By 69birdboy
Hmm, forgot to mention that did I? :doh: No, it...

Hmm, forgot to mention that did I? :doh: No, it did not. Pressure is still the same.
Forum: Pontiac - Street 09-13-2012, 07:06 PM
Replies: 33
Views: 1,804
Posted By 69birdboy
Well, I changed the oil filter to a Bosch. Inside...

Well, I changed the oil filter to a Bosch. Inside the old oil filter, I found what I believe to be a piece of a lifter! Several months ago, I broke a two valve springs, a couple lifters, one of the...
Forum: Pontiac - Street 09-11-2012, 07:23 PM
Replies: 33
Views: 1,804
Posted By 69birdboy
The gauge checked out 5 psi low, so the numbers...

The gauge checked out 5 psi low, so the numbers are really more like 10 psi idle and 35 psi @ 3000 rpm. I couldn't find an AC PF24 filter locally, so I'm installing a Bosch 3423 as soon as the engine...
Forum: Pontiac - Street 09-11-2012, 10:13 AM
Replies: 33
Views: 1,804
Posted By 69birdboy
Fram PH25

Fram PH25
Forum: Pontiac - Street 09-11-2012, 09:15 AM
Replies: 33
Views: 1,804
Posted By 69birdboy
I have no idea what the main bearing clearances...

I have no idea what the main bearing clearances are at this point. They checked out OK when the motor was built.

The oil is Rotella. Before the problems started, while hot the pressure was just...
Forum: Pontiac - Street 09-10-2012, 05:58 PM
Replies: 33
Views: 1,804
Posted By 69birdboy
Exclamation Oil pressure is low

I've got a rebuilt 400 in my bird with about 40,000 miles on it, and when I start it the oil pressure is good (~40 at idle, 60 at cruise). As the engine warms up (15 minutes or so) the oil pressure...
Forum: Pontiac - Street 06-14-2011, 01:37 PM
Replies: 28
Views: 1,518
Posted By 69birdboy
Is it possible that the valve train issues were...

Is it possible that the valve train issues were cause me to run slow at the track?
Forum: Pontiac - Street 06-14-2011, 01:35 PM
Replies: 3
Views: 436
Posted By 69birdboy
Sure sounds like a huge vacuum leak. Spray around...

Sure sounds like a huge vacuum leak. Spray around the intake and see if the idle changes at any point.
Forum: Pontiac - Street 06-14-2011, 01:16 PM
Replies: 28
Views: 1,518
Posted By 69birdboy
I broke a couple of valve springs on the #16...

I broke a couple of valve springs on the #16 heads, exhaust a few months ago and intake #7 most recently. When I put the cam in I was dumb and didn't have the machine work done to accommodate the...
Forum: Pontiac - Street 06-14-2011, 12:21 AM
Replies: 28
Views: 1,518
Posted By 69birdboy
Thanks everyone, I appreciate the advice. Due to...

Thanks everyone, I appreciate the advice. Due to the issues with the pistons, I've decided to just have my 16s fixed and save the aftermarket heads for later with a different shortblock some time.
...
Forum: Pontiac - Street 06-13-2011, 10:41 PM
Replies: 28
Views: 1,518
Posted By 69birdboy
It's a '69 firebird, it is 3750 pounds with...

It's a '69 firebird, it is 3750 pounds with driver. I had it running perfectly on the street (until I started breaking valve springs but that's another story), though admittedly I'm kinda winging it...
Forum: Pontiac - Street 06-13-2011, 08:01 PM
Replies: 28
Views: 1,518
Posted By 69birdboy
The '68 16's

The '68 16's
Forum: Pontiac - Street 06-13-2011, 08:00 PM
Replies: 28
Views: 1,518
Posted By 69birdboy
Thanks for the response, Steve. I suspect that...

Thanks for the response, Steve. I suspect that the 60 ft is largely a result of the gear and tires, it was practically impossible to get a clean launch.

I've got the heads off now, and whatever I...
Forum: Pontiac - Street 06-13-2011, 06:13 PM
Replies: 28
Views: 1,518
Posted By 69birdboy
2.437 60 ft. went through at 92 mph. I'm not...

2.437 60 ft. went through at 92 mph. I'm not changing out those pistons until the motor needs an overhaul, but the gears could be a project for next year. So you don't think I'd get much more out of...
Forum: Pontiac - Street 06-13-2011, 05:12 PM
Replies: 28
Views: 1,518
Posted By 69birdboy
Post Cylinder head selection

So I've got my heads off of my car right now and what started as a simple repair job has exploded into a "since I've got them off anyway..." situation. I want some advice as to what direction to take...
Forum: Pontiac - Street 06-06-2011, 12:56 PM
Replies: 1
Views: 297
Posted By 69birdboy
Unhappy Broken valve spring

I've got a street 400 that has now broken two valve springs. The first one was on the exhaust and I replaced it with a stock spring. That was a few thousand miles ago. Now, an intake spring is broken...
Forum: Pontiac - Street 06-13-2008, 11:43 AM
Replies: 2
Views: 837
Posted By 69birdboy
1966 389

I've found a 1966 389 out of an executive that I can pick up if I want. I don't know much about engines this early, and am curious if this engine can bolt into a 1969 or later pontiac, and if so,...
Forum: Pontiac - Street 04-22-2008, 10:22 PM
Replies: 24
Views: 1,658
Posted By 69birdboy
I've found that HEI in 69 firebird is too large...

I've found that HEI in 69 firebird is too large to fit properly. A stock points type or an accel or something similar fits great and works great. Well, stock points work great if you have an msd box,...
Forum: Pontiac - Street 04-22-2008, 11:37 AM
Replies: 24
Views: 1,658
Posted By 69birdboy
More often than not, cold start problems are in...

More often than not, cold start problems are in the carb / fuel system.
Forum: Pontiac - Street 04-22-2008, 11:28 AM
Replies: 18
Views: 782
Posted By 69birdboy
I've had this happen before, and it didn't take...

I've had this happen before, and it didn't take 15 minutes to become a problem. It was noticeable at lower speeds as well.
Forum: Pontiac - Street 04-21-2008, 11:07 AM
Replies: 18
Views: 782
Posted By 69birdboy
It's possible you have a clogged fuel filter, or...

It's possible you have a clogged fuel filter, or a worn out fuel pump, or some kind of restriction in the fuel system.
Forum: Pontiac - Street 06-05-2007, 06:12 PM
Replies: 7
Views: 673
Posted By 69birdboy
It's possible that your kickdown switch is stuck.

It's possible that your kickdown switch is stuck.
Forum: Pontiac - Street 05-11-2007, 02:00 PM
Replies: 8
Views: 529
Posted By 69birdboy
You may have been right about the filter. It was...

You may have been right about the filter. It was almost black with gunk. We'll see if that helps. Also, the car did not sit over winter.
Forum: Pontiac - Street 05-10-2007, 11:44 AM
Replies: 8
Views: 529
Posted By 69birdboy
Nope. It's running at a good temp. It...

Nope.



It's running at a good temp. It didn't show up until the weather warmed up a bit, though.



That's possible. I did use one of those mr. gasket advance kits in it, and those have a...
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