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Search took 0.16 seconds. Search: Posts Made By: steve25
Forum: Pontiac - Street 05-16-2025, 06:21 PM
Replies: 62
Views: 2,311
Posted By steve25
Why bother shelling out money for a leak down...

Why bother shelling out money for a leak down tester?
Your to the point now of having to pull both heads to find out what’s going on at least in my mind.

Even if you did a leak down tester and it...
Forum: Pontiac - Street 05-13-2025, 11:06 AM
Replies: 62
Views: 2,311
Posted By steve25
The standard performer can make well over 400 hp...

The standard performer can make well over 400 hp with superior drivability up to 5500.

Here are Edekbrocks own recommendations for there intakes and as you can see the performer rpm has a power...
Forum: Pontiac - Street 05-11-2025, 09:20 AM
Replies: 47
Views: 4,512
Posted By steve25
I have never done an expansion test, but .002”...

I have never done an expansion test, but .002” does sound very tight.
I have always gone with .004” in the least.
Here’s what HO racing use to recommend .
Forum: Pontiac - Street 05-11-2025, 07:39 AM
Replies: 7
Views: 482
Posted By steve25
A few things to note here. First you need to...

A few things to note here.

First you need to CC a few chambers in the #48 heads because there where production versions and replacements at either 66 CCs or the more common 72 or so CCs.

The...
Forum: Pontiac - Street 05-08-2025, 04:45 PM
Replies: 15
Views: 608
Posted By steve25
With the motor not running does the fan wabble?

With the motor not running does the fan wabble?
Forum: Pontiac - Street 05-08-2025, 04:32 PM
Replies: 47
Views: 4,512
Posted By steve25
One area of the pump where I know for certain...

One area of the pump where I know for certain that pressure can be lost is in terms of how well the pump cover seal to the body because of machine marks..
Forum: Pontiac - Street 05-05-2025, 06:33 PM
Replies: 8
Views: 473
Posted By steve25
The stock OD of the guide boss was .685” The...

The stock OD of the guide boss was .685”

The stock duel spring ID was .814” so there was still a .119” gap.

With what you have now with those 988 springs is a OD of the valve seal of .654” and...
Forum: Pontiac - Street 05-05-2025, 04:32 PM
Replies: 14
Views: 544
Posted By steve25
Paul I guess I just mean that question would...

Paul I guess I just mean that question would always pop out from the back of my mind every time I went to WOT.
Forum: Pontiac - Street 05-03-2025, 07:45 AM
Replies: 33
Views: 1,430
Posted By steve25
First remove the key from the crank with a...

First remove the key from the crank with a diagonal pair of cutters taking care not to raise much of a lip, then see how easy it drops into the keyway on the crank.

It should be a light finger...
Forum: Pontiac - Street 05-02-2025, 03:16 PM
Replies: 37
Views: 1,359
Posted By steve25
Everything you’re telling us about to me makes me...

Everything you’re telling us about to me makes me say that you want a stock 1973 455 but with fuel injection and RA exh manifolds .

Rebuild your 4x heads top to bottom if they pass a crack...
Forum: Pontiac - Street 05-02-2025, 05:10 AM
Replies: 17
Views: 939
Posted By steve25
A PCV will not help with crankcase pressure at...

A PCV will not help with crankcase pressure at high throttle openings when there IS no vacuume .
That's why on stock motors there's a tube coming up out of the valve cover and is plumbed to the air...
Forum: Pontiac - Street 04-30-2025, 03:41 PM
Replies: 24
Views: 1,053
Posted By steve25
The early non SD standard production forged rods...

The early non SD standard production forged rods are not of a grade of steel where applying a heat treating process is going to gain you much for the effort and then the money involved in resizing...
Forum: Pontiac - Street 04-30-2025, 03:36 PM
Replies: 31
Views: 1,547
Posted By steve25
Flat tappet cam and or lifter failure

With the multitude of these type of failures being posted up I like to request that folks that start a new thread on such an upsetting thing also post up what there seat and open pressure was...
Forum: Pontiac - Race 04-30-2025, 04:59 AM
Replies: 69
Views: 4,924
Posted By steve25
Kaufman makes a Hemi head that could be a great...

Kaufman makes a Hemi head that could be a great starting point for a SOHC motor, but in the world of boost and making over 2000 hp where you need to possibly tare the motor down in between runs a...
Forum: Pontiac - Street 04-25-2025, 07:56 AM
Replies: 33
Views: 1,430
Posted By steve25
Easy check for true TDC on number 1 is that if...

Easy check for true TDC on number 1 is that if you remove the passenger side valve cover or look into it thru the oil fill cap you will see number 6 exh valve will be open some .

Another way to go...
Forum: Pontiac - Street 04-23-2025, 04:19 PM
Replies: 53
Views: 1,861
Posted By steve25
With a solid flat tappet lifter you kiss goodbye...

With a solid flat tappet lifter you kiss goodbye the possibility of the plunger to body clearance either not being right off the bat or waring with time.

Hydro roller lifters are heavy and eat...
Forum: Pontiac - Street 04-23-2025, 06:31 AM
Replies: 80
Views: 3,772
Posted By steve25
In my line of daily work we have had a fair...

In my line of daily work we have had a fair amount of gear that we have made by the red communist arrive with either defective or with a bad issue that we do not find out about until it has got into...
Forum: Pontiac - Street 04-19-2025, 05:30 PM
Replies: 11
Views: 500
Posted By steve25
What matters is RPM at WOT, not MPH.

What matters is RPM at WOT, not MPH.
Forum: Pontiac - Street 04-19-2025, 05:27 PM
Replies: 19
Views: 677
Posted By steve25
Don’t listen to 64speed! Many a block that I...

Don’t listen to 64speed!

Many a block that I have had in street cars and race cars have had that.

Just grind It out some so that

1) a crack can’t start.

2) so that the real thin section...
Forum: Pontiac - Street 04-16-2025, 01:56 PM
Replies: 42
Views: 1,474
Posted By steve25
Thank you Paul.

Thank you Paul.
Forum: Pontiac - Street 04-15-2025, 01:46 PM
Replies: 42
Views: 1,474
Posted By steve25
Without having any experience with either of...

Without having any experience with either of those and since the pricing is so close, I would go for the 352 buck rockers.
Forum: Pontiac - Street 04-14-2025, 04:50 AM
Replies: 16
Views: 735
Posted By steve25
By the time the Exh gasses get out of the muffler...

By the time the Exh gasses get out of the muffler they have cooled and hence condensed enough that running them out a 2.5" tailpipe going out to the bumper wil only shave 3 hp off a 600 hp motor,...
Forum: Pontiac - Street 04-13-2025, 04:07 PM
Replies: 19
Views: 742
Posted By steve25
A solenoid can only be on or off, no in between...

A solenoid can only be on or off, no in between unless it’s malfunctioning.
Forum: Pontiac - Street 04-13-2025, 07:37 AM
Replies: 19
Views: 742
Posted By steve25
This is an option and is worth giving a try,...

This is an option and is worth giving a try, since there’s no harm, but most times there are two issues that take place from this.

1) the rpm goes up much higher then needed, this in turn makes...
Forum: Pontiac - Street 04-12-2025, 08:38 AM
Replies: 21
Views: 1,341
Posted By steve25
Unfortunate truth.

For certain this should be an addendum to Murphy’s law.
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