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Posts Made By:
steve25
Forum:
Pontiac - Street
Today, 05:35 AM
Replies:
7
Help with Jetting
Views:
143
Posted By
steve25
The first big mistake here is to running a...
The first big mistake here is to running a blocked power valve in any Carb that needs to live any amount on the street.
What Cam is in the motor and who put that Cam in?
What Intake Manifold...
Forum:
Pontiac - Street
Yesterday, 05:22 PM
Replies:
1
a crankshaft thread
Views:
138
Posted By
steve25
I wonder if around and after 74 when the big...
I wonder if around and after 74 when the big chamfers where added to the 400 pistons that they started using the cranks for the 350 to start off closer to the needed balance before the final balance...
Forum:
Pontiac - Street
Yesterday, 02:42 PM
Replies:
7
Help with Jetting
Views:
143
Posted By
steve25
A carb without a choke on anything but a full...
A carb without a choke on anything but a full time race car is your first mistake.
There set up far too rich to make up for having no choke.
Forum:
Pontiac - Street
Yesterday, 02:38 PM
Replies:
7
HELP! Charging system issues
Views:
156
Posted By
steve25
Why are you running that big 150 amp Alt? In...
Why are you running that big 150 amp Alt?
In the last 20 years or so I have never known them to live long with the aftermarket regulators they use in that amperage Alt.
Forum:
Pontiac - Street
Yesterday, 11:27 AM
Replies:
5
Distributor Gear Roll Pin
Views:
171
Posted By
steve25
If you still have to drive them in then there...
If you still have to drive them in then there good to go.
Forum:
Pontiac - Street
Yesterday, 08:42 AM
Replies:
8
Q-Jet on Olds 455 surprizes Nicks Garage
Views:
427
Posted By
steve25
When one looks at all the cars in NHRA classes...
When one looks at all the cars in NHRA classes that have been forced to use them and the times that those cars turn it becomes very clear that those who use a blanket statement that they suck just...
Forum:
Pontiac - Street
Yesterday, 05:36 AM
Replies:
20
dip stick popping up
Views:
444
Posted By
steve25
Are you running the stock air cleaner assembly...
Are you running the stock air cleaner assembly with the steel tube coming up out of the valve cover on one side and plumbed into the filter case?
Forum:
Pontiac - Street
06-10-2024, 06:52 PM
Replies:
10
1969 400 poor performance
Views:
616
Posted By
steve25
We’ve yet to hear a reply as to what your hot...
We’ve yet to hear a reply as to what your hot cranking compression is on all 8 cylinders.
Anything else you do, check or change before this is just waxing your Johnson rod.
A compression test...
Forum:
Pontiac - Street
06-10-2024, 06:46 PM
Replies:
3
Quadrajet 7041264 - Secondary Adjusment and General tuning/timing
Views:
191
Posted By
steve25
One must always check total timing at least up at...
One must always check total timing at least up at 4500 to confirm that something is not messed up and you have a high rpm over advance condition taking place.
Forum:
Pontiac - Street
06-10-2024, 11:09 AM
Replies:
3
Inspecting used engines
Views:
310
Posted By
steve25
Welcome!
Welcome!
Forum:
Pontiac - Street
06-09-2024, 06:32 PM
Replies:
36
455 Spark Knocking since moving to Arizona
Views:
927
Posted By
steve25
I have used water injection on my blower motor...
I have used water injection on my blower motor and it helped out.
The motor was on the edge at times, not fully over the edge like .060” over 428 ( 440 cid ) with 72 CC heads.
I can see how you...
Forum:
Pontiac - Street
06-09-2024, 04:46 PM
Replies:
36
455 Spark Knocking since moving to Arizona
Views:
927
Posted By
steve25
Where looking for a exh gas temp at full throttle...
Where looking for a exh gas temp at full throttle of between 1250 and no more then 1400 on the way outside.
Every heat range of plug will operate as intended within a 400 to 600 degree range...
Forum:
Pontiac - Street
06-09-2024, 01:26 PM
Replies:
3
Inspecting used engines
Views:
310
Posted By
steve25
In terms of a Pontiac I would be wanting to yank...
In terms of a Pontiac I would be wanting to yank the intake and the valley pan to check out how the lifter to bore clearance is.
If the motor / block needs to be saved by a cylinder bore sleeve...
Forum:
Pontiac - Street
06-08-2024, 06:21 PM
Replies:
50
Read my plugs
Views:
1,959
Posted By
steve25
Well that fix should help the carb not sence a...
Well that fix should help the carb not sence a lower vacuum level which would make it run richer than need be all the time.
It’s good that you found that.
Here’s a picture of plugs out of a...
Forum:
Pontiac - Street
06-08-2024, 06:07 PM
Replies:
36
455 Spark Knocking since moving to Arizona
Views:
927
Posted By
steve25
Since it only ping’s at close to full throttle,...
Since it only ping’s at close to full throttle, or only at full throttle It’s far far cheaper to just install a water injection set up then to swap heads.
This will 100% solve your issue and you...
Forum:
Pontiac - Street
06-08-2024, 10:59 AM
Replies:
8
Quadrajet fuel leak
Views:
411
Posted By
steve25
It looks like that air horn was soaked in acid of...
It looks like that air horn was soaked in acid of some kind to clean it!
That air horn should have never have been reused by whoever is rebuilding those carbs if not that company.
Forum:
Pontiac - Street
06-08-2024, 10:52 AM
Replies:
9
65 GTO tripower losing power at higher rpm’s when engine is hot
Views:
246
Posted By
steve25
You’re blessed with a tripower so use it in...
You’re blessed with a tripower so use it in trouble shooting the issue.
Drive it until it acts up and get into the throttle such that your opening the outer two carbs, if they have there fuel...
Forum:
Pontiac - Street
06-08-2024, 06:32 AM
Replies:
9
65 GTO tripower losing power at higher rpm’s when engine is hot
Views:
246
Posted By
steve25
Well at this point you have to start a process of...
Well at this point you have to start a process of elimination some how.
A coil is relatively cheap and far easier to change than a fuel pump or yanking a carb off to go through it and rebuild it .
...
Forum:
Pontiac - Street
06-07-2024, 04:04 PM
Replies:
13
NEED ADVICE ON MY 400 PONTIAC BUILD
Views:
472
Posted By
steve25
The only thing I see that concerns me is running...
The only thing I see that concerns me is running that cam with the #13 heads.
Your cylinder pressure will be right on the edge of being too high for pump fuel.
I would go with the XE268 or maybe...
Forum:
Pontiac - Street
06-07-2024, 03:56 PM
Replies:
23
Thicker head gasket question
Views:
682
Posted By
steve25
I bet your motor did not run hot until you backed...
I bet your motor did not run hot until you backed the timing off?
Are you running vacuum advance, because not running at least 8 degrees of vacuum advance and a motor running hot go hand in hand!
...
Forum:
Pontiac - Street
06-07-2024, 02:56 PM
Replies:
11
Porting and valve seats
Views:
620
Posted By
steve25
With a 455 if you’re not intending to have a need...
With a 455 if you’re not intending to have a need to make peak hp above 5400 rpm then you do not need to step up to a 1.77” exh valve.
Just get a set of new intake and exh valves in the stock...
Forum:
Pontiac - Race
06-07-2024, 11:30 AM
Replies:
20
Beehive pressures for HR cams
Views:
539
Posted By
steve25
I don't care about the loss in valvetrain weight...
I don't care about the loss in valvetrain weight form a small retainer in terms of a Hydro roller Cam.
For me I would first want to know if a Hydro roller lifter is heavier then a regular one, and...
Forum:
Pontiac - Street
06-06-2024, 03:14 PM
Replies:
31
Strange Timing Problem
Views:
965
Posted By
steve25
There’s no down side to running 14 or even 16 as...
There’s no down side to running 14 or even 16 as long as the motor cranks over well when heat soaked and you can get the motor to idle as low as you need.
Forum:
Pontiac - Street
06-06-2024, 08:43 AM
Replies:
19
Easier starting
Views:
961
Posted By
steve25
Your owners manual was written long before...
Your owners manual was written long before Ethanol cut fuel and depending on what he actually has taking doing what the manual recommends may make his issue worse .
Forum:
Pontiac - Street
06-06-2024, 07:13 AM
Replies:
19
Easier starting
Views:
961
Posted By
steve25
There’s zip for vacuum when your cranking the...
There’s zip for vacuum when your cranking the motor so I don’t see any point to the comment in post # 8 other then having too little base timing, or so much that the motor cranks slow.
Showing results 1 to 25 of 500
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