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PY Online Forums - Bringing the Pontiac Hobby Together
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Posts Made By:
HWYSTR455
Forum:
Pontiac - Race
06-14-2024, 08:09 PM
Replies:
124
400 Stroker Build Documentary
Views:
12,556
Posted By
Tim Corcoran
Always make sure you verify you have enough...
Always make sure you verify you have enough clearance between the piston and the valve. With head gasket installed and head torqued, not full torque but you should at least partially crush the head...
Forum:
Pontiac - Street
06-13-2024, 12:48 PM
Replies:
20
4L80 Conversion
Views:
510
Posted By
Sirrotica
FWIW, I've run automatics, and 4 speeds on an...
FWIW, I've run automatics, and 4 speeds on an autocross course, there's no advantage to run a 4 speed over an automatic. I've beaten every 4 speed car in my class (SCCA, C prepared) to win the title...
Forum:
Pontiac - Street
06-13-2024, 12:02 PM
Replies:
20
4L80 Conversion
Views:
510
Posted By
JLMounce
Autocross with an auto is not really a big deal. ...
Autocross with an auto is not really a big deal. Most cars are in 2nd for the whole run. Road courses are a different story of course.
And yes the US shift controller has the ability to store 4...
Forum:
Pontiac - Street
06-13-2024, 05:40 AM
Replies:
12
HELP! Charging system issues
Views:
395
Posted By
Cliff R
Couple of things to mention. IF you install...
Couple of things to mention.
IF you install a new SI style alternator make sure that the battery is FULLY charged. If you don't it goes to full charge and works the piss out of the regulator and...
Forum:
Pontiac - Street
06-13-2024, 03:50 AM
Replies:
12
HELP! Charging system issues
Views:
395
Posted By
Schurkey
Your battery-to-starter cable is 8-gauge? Not 4-...
Your battery-to-starter cable is 8-gauge? Not 4- or maybe 2-gauge?
There's at least two ways. The popular way--posted on "famous electrical guy" web-site, will work...but he's screwed-up the...
Forum:
Pontiac - Street
06-12-2024, 04:30 PM
Replies:
20
Higher Ratio Rocker vs. More Lobe Lift
Views:
662
Posted By
tom s
I prefer lobe lift,if you have 1.5s the whole...
I prefer lobe lift,if you have 1.5s the whole world is open too you for more valve lift.Tom
Forum:
Pontiac - Street
06-12-2024, 04:05 PM
Replies:
20
Higher Ratio Rocker vs. More Lobe Lift
Views:
662
Posted By
Dragncar
I have always had the opinion that as far as...
I have always had the opinion that as far as valve train stress you are better off getting lift with the cam and not the rocker arms.
Its cheaper too if you already have the 1.5 rockers and not the...
Forum:
Pontiac - Street
06-11-2024, 11:03 PM
Replies:
42
dip stick popping up
Views:
1,168
Posted By
Tim Corcoran
I have to ask, did you use the same machinist...
I have to ask, did you use the same machinist each time you rebuilt the engine? Gapless rings are a little finicky I know I have used them in the past. They need a special finish to work correctly....
Forum:
Pontiac - Street
06-09-2024, 06:27 PM
Replies:
36
455 Spark Knocking since moving to Arizona
Views:
1,021
Posted By
geeteeohguy
FWIW, I ran an Edelbrock water injection set-up...
FWIW, I ran an Edelbrock water injection set-up on my '67 GTO in the late 1980's when I had stock compression and it didn't really help. This was in dry and arid conditions. I ended up installing...
Forum:
Pontiac - Street
05-30-2024, 01:16 PM
Replies:
17
Olds 12 bolt rear
Views:
849
Posted By
android 211
I think he's on this site, 'Monzazz' who rebuilds...
I think he's on this site, 'Monzazz' who rebuilds rears. He has Olds posi units made by Yukon. He's got the lesser common odd parts. He rebuilds the GM cone style rears. I have two Pontiac 10...
Forum:
Pontiac - Race
05-25-2024, 11:08 PM
Replies:
124
400 Stroker Build Documentary
Views:
12,556
Posted By
Tim Corcoran
More photos
More photos
Forum:
Pontiac - Race
05-25-2024, 11:06 PM
Replies:
124
400 Stroker Build Documentary
Views:
12,556
Posted By
Tim Corcoran
After file fitting the rings I moved on to...
After file fitting the rings I moved on to hanging the pistons on the rods and installing the rods and pistons into the engine. An important item to be extra careful with. The rods have a chamfer on...
Forum:
Pontiac - Race
05-24-2024, 12:21 PM
Replies:
124
400 Stroker Build Documentary
Views:
12,556
Posted By
Tim Corcoran
I have been out of the country on a long term...
I have been out of the country on a long term business trip and now getting back to finishing this engine up. I am currently file fitting the rings. I have Total Seal classic style rings. The...
Forum:
Interior TECH
05-14-2024, 02:11 PM
Replies:
13
seat belt restoration
Views:
649
Posted By
bill ryder
Ssnake Oyl seat belt restoration. They will come...
Ssnake Oyl seat belt restoration. They will come back perfect. 800 284 7777
"Bill"!
Forum:
Pontiac - Street
05-12-2024, 03:00 PM
Replies:
32
Recipe for a reliable 400 driver
Views:
1,900
Posted By
SD455DJ
Skip, From what I've seen/read/heard the...
Skip,
From what I've seen/read/heard the maximum flow from high compression small valve (1.96"/1.66") heads from '68 to '70 flow roughly 190/145 cfm; the '68 to '70 large valve D-port head all...
Forum:
Pontiac - Street
05-12-2024, 11:34 AM
Replies:
32
Recipe for a reliable 400 driver
Views:
1,900
Posted By
SD455DJ
With the untouched 455HO 197 heads (8.60 to 1...
With the untouched 455HO 197 heads (8.60 to 1 SCR)and factory top end (aluminum intake with crossover, 7041263 Q-jet, factory RA exhaust manifolds (with the puny 2.1” outlets) on the same ’70 YH code...
Forum:
Pontiac - Street
05-11-2024, 06:30 PM
Replies:
32
Recipe for a reliable 400 driver
Views:
1,900
Posted By
SD455DJ
Dan had the 2800 cam sitting on a shelf for...
Dan had the 2800 cam sitting on a shelf for several years and since this was, more or less, a stock style rebuild, he decided to throw it in. The 6X-4 heads are totally stock, except for the new...
Forum:
Pontiac - Street
05-11-2024, 02:02 PM
Replies:
32
Recipe for a reliable 400 driver
Views:
1,900
Posted By
SD455DJ
Joe-Touring, Dan has rebuilt 2-W72 400's and they...
Joe-Touring, Dan has rebuilt 2-W72 400's and they both made the most power on the dyno with 42 degrees total timing...pulls with 40 and 44 total lost minor power. The large chambers and low...
Forum:
Pontiac - Street
05-10-2024, 07:28 PM
Replies:
20
12 bolt Driveshaft Length
Views:
812
Posted By
Verdoro 68
The new driveshaft fits perfect. I don't think...
The new driveshaft fits perfect. I don't think there's any risk of breaking this beast! Plenty of room around the x-pipe. It is heavy though. I kind of wish I asked about aluminum.
...
Forum:
Pontiac - Street
05-10-2024, 05:20 PM
Replies:
32
Recipe for a reliable 400 driver
Views:
1,900
Posted By
Formulas
For building a good cruiser engine you want low...
For building a good cruiser engine you want low end torque.
Compression builds torque at every rotation of the crank if it was my goal to build a cruiser 400 i would use 85ish CC 1970 and prior...
Forum:
Pontiac - Street
05-10-2024, 11:41 AM
Replies:
26
400 Rebuild and conversion to EFI
Views:
959
Posted By
GOAT8U2
I'm doing all the spacers first and literally...
I'm doing all the spacers first and literally getting this all done as we speak, if the pricing is better to just make the pulley I'll do that and it's faster to bolt on really. So far the 4.5" water...
Forum:
70-73 Firebird & TA TECH
05-09-2024, 06:01 PM
Replies:
54
'71 Firebird 535 IA2 Pro-Touring Build Thread
Views:
9,002
Posted By
kingbuzzo
Ring of Honor hey...very nice
Ring of Honor hey...very nice
Forum:
Suspension TECH
05-09-2024, 03:49 PM
Replies:
40
18 inch wheel fitment, '67 LeMans/GTO?
Views:
1,875
Posted By
vertigto
FWIW...I'm running NITTO NT555 G2 (245/45R18) up...
FWIW...I'm running NITTO NT555 G2 (245/45R18) up front on US Mags Rambler 8" wheels with 4.5" backspace/1mm offset & 275/40ZR18 on 9.5" wheels with 5.25" backspace/1mm offset...no rubbing issues.
Forum:
Pontiac - Street
05-09-2024, 01:02 PM
Replies:
7
Torque converters
Views:
488
Posted By
Tom Pugh
nice install...
nice install...
Forum:
Pontiac - Street
05-09-2024, 10:31 AM
Replies:
7
Torque converters
Views:
488
Posted By
Verdoro 68
Here’s a thread on how I did mine. It’s in...
Here’s a thread on how I did mine. It’s in sequence after the radiator cooler as Jim mentioned. It’s a stacked plate as well. I put it up front for better air flow, plus it also keeps it hidden....
Showing results 1 to 25 of 417
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