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Forum: Pontiac - Street Today, 04:52 AM
Replies: 51
Views: 1,806
Posted By steve25
Who's they? In that case how did you even...

Who's they?

In that case how did you even set the initial advance on the motor?
Forum: Pontiac - Street Yesterday, 06:22 PM
Replies: 35
Views: 1,183
Posted By steve25
A factory iron intake is perfectly fine for what...

A factory iron intake is perfectly fine for what you’re doing, they can produce far more HP than what your motor will be making.

If you can turn up a used Edelbrock performer then that’s a good...
Forum: Pontiac - Street Yesterday, 06:01 PM
Replies: 51
Views: 1,806
Posted By steve25
You might want to take advantage of this service...

You might want to take advantage of this service if your balancer is not cracked in the keyway area.
Forum: Pontiac - Street Yesterday, 05:23 PM
Replies: 51
Views: 1,806
Posted By steve25
Good news to hear! That much retard is right...

Good news to hear!

That much retard is right on the edge of the motor backfiring when you mash the throttle which would have been a more definitive clue to your issue assuming your firing order...
Forum: Pontiac - Street Yesterday, 03:40 PM
Replies: 51
Views: 1,806
Posted By steve25
As I recall what was the 360 hp motor in the GTO...

As I recall what was the 360 hp motor in the GTO was down rated to 345 in the Firebird by means of limiting the secondary throttle opening, but that being the case 345 Hp will not feel like a Turd,...
Forum: Pontiac - Street 09-18-2024, 05:45 PM
Replies: 35
Views: 1,183
Posted By steve25
True .100” longer.

True .100” longer.
Forum: Pontiac - Street 09-18-2024, 04:12 PM
Replies: 35
Views: 1,183
Posted By steve25
Milage differences really only come into play at...

Milage differences really only come into play at steady highway speeds as this chart shows, it also shows the other side of the coin.

That other side is the fact that around town driving dealing...
Forum: Pontiac - Street 09-18-2024, 02:04 PM
Replies: 35
Views: 1,183
Posted By steve25
Listen the Pontiac 350 has a longer stroke then...

Listen the Pontiac 350 has a longer stroke then any other 350 cid motor that was in GMs divisions back then, so it has superior torque available for great street driving.

Build for keeping that...
Forum: Pontiac - Street 09-18-2024, 01:55 PM
Replies: 51
Views: 1,806
Posted By steve25
Side story. Back in the day HO racing ...

Side story.

Back in the day HO racing during testing dropped exchanged the stock exh system on a 74 455SD for a duel exh system and picked up 90 Hp.
Forum: Pontiac - Street 09-18-2024, 12:42 PM
Replies: 51
Views: 1,806
Posted By steve25
Many times when you run an open exh the car has...

Many times when you run an open exh the car has even less torque output up to 3000 rpm or so I don’t know how much that test out will tell you about your issue.

Your better off listening for the...
Forum: Pontiac - Street 09-18-2024, 11:43 AM
Replies: 51
Views: 1,806
Posted By steve25
The OP states that his motor has “strong even...

The OP states that his motor has “strong even compression “ but yet he does not state how much PSI that is.
Forum: Pontiac - Street 09-18-2024, 08:04 AM
Replies: 35
Views: 1,440
Posted By steve25
Something often overlooked in these carbs is the...

Something often overlooked in these carbs is the pivot hanger that the float hangs off of .

This needs to be bent such that sitting down the air horn to the body keeps this part held firmly in its...
Forum: Pontiac - Street 09-18-2024, 07:59 AM
Replies: 51
Views: 1,806
Posted By steve25
Good point in the above! I forgot to mention...

Good point in the above!
I forgot to mention that 1.65 rockers can be dropped on any factory cam other then the RA4 cam without running into push rod to guide hole clearance issues, but once your...
Forum: Pontiac - Street 09-18-2024, 04:58 AM
Replies: 51
Views: 1,806
Posted By steve25
You have not stated what was done to your #62...

You have not stated what was done to your #62 heads to allow them to work with the 488" exh valve lift of the 2802 Cam.

Even if you have changed valve springs to allow the use of 1.65 rockers...
Forum: Pontiac - Street 09-17-2024, 06:59 PM
Replies: 6
Views: 299
Posted By steve25
My ball joint was almost new and I just did not...

My ball joint was almost new and I just did not get it seated right after doing tons of them on other folks cars.
Forum: Pontiac - Street 09-17-2024, 06:31 PM
Replies: 2
Views: 139
Posted By steve25
Are you seeing brass chips or aluminum from the...

Are you seeing brass chips or aluminum from the drilling you did?
Forum: Pontiac - Street 09-17-2024, 05:00 PM
Replies: 35
Views: 1,183
Posted By steve25
Let me ruffle some feathers in terms of running...

Let me ruffle some feathers in terms of running aftermarket heads and their impact on drivability as compared with your current heads.

A base line 1970 400 4bbl motor will make peak torque at 3000...
Forum: Pontiac - Street 09-17-2024, 08:49 AM
Replies: 6
Views: 299
Posted By steve25
I had that happen on my 70 once, but it was an...

I had that happen on my 70 once, but it was an upper and I was only doing about 25 mph.

Luck for both of us that no fender and paint damage took place.
Forum: Pontiac - Street 09-17-2024, 04:58 AM
Replies: 12
Views: 414
Posted By steve25
Egge machine / auto parts has a complete gasket...

Egge machine / auto parts has a complete gasket set for 223 bucks.
Forum: Pontiac - Street 09-16-2024, 02:17 PM
Replies: 35
Views: 1,183
Posted By steve25
A 3 speed auto or a 4 speed does not matter...

A 3 speed auto or a 4 speed does not matter anywhere near as much to your future plans as does the rear gears the car has.
If the car does not have AC and currently has a 2bbl carb then you likely...
Forum: Pontiac - Street 09-16-2024, 08:33 AM
Replies: 7
Views: 348
Posted By steve25
Why go thru all of these gyrations? Even in a...

Why go thru all of these gyrations?
Even in a race motor there is no detriment to having vacuum advance hooked up, in fact there are a few positives.
Forum: Pontiac - Street 09-15-2024, 07:07 PM
Replies: 13
Views: 619
Posted By steve25
Be sure to wipe out any crap from the sealing...

Be sure to wipe out any crap from the sealing area that the rubber of the cap mates to otherwise even a good new cap might produce the same issue.
Forum: Pontiac - Street 09-15-2024, 01:20 PM
Replies: 6
Views: 276
Posted By steve25
Then you need to add a Dizzy with vacuum advance...

Then you need to add a Dizzy with vacuum advance to your parts list because your motors tuning needs will be different in terms of setting it up for the best part throttle driving feel an performance.
Forum: Pontiac - Street 09-15-2024, 07:30 AM
Replies: 6
Views: 276
Posted By steve25
If that Mallory has no vacuum advance and the car...

If that Mallory has no vacuum advance and the car will not be used for race only then get a Dizzy in there that does have vacuum advance.
Forum: Pontiac - Race 09-14-2024, 07:12 AM
Replies: 17
Views: 639
Posted By steve25
Don’t you love when a company gives a Hp rating...

Don’t you love when a company gives a Hp rating for their transmissions they’re selling when it’s the level of torque that the motor makes that tears them up?
A 525 Hp motor might make 600 ft lbs of...
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