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Posts Made By:
Jay S
Forum:
Pontiac - Street
Today, 01:26 AM
Replies:
12
Higher Ratio Rocker vs. More Lobe Lift
Views:
218
Posted By
Jay S
Are you shooting for 560 to 580 HP at your...
Are you shooting for 560 to 580 HP at your altitude? That would figure out to be an equivalent of around 640 to 660 HP for me a state east of you. I think that is going to need the big .4”ish ...
Forum:
Pontiac - Street
06-11-2024, 09:02 PM
Replies:
36
455 Spark Knocking since moving to Arizona
Views:
976
Posted By
Jay S
Nice work! Which Jet carb do you have? Is it...
Nice work!
Which Jet carb do you have? Is it the stage 2?
Before you put the timing back in, after some use it is a good idea to pull a spark plug out and look for Aluminum speck’s on the...
Forum:
Pontiac - Street
06-10-2024, 02:22 PM
Replies:
36
455 Spark Knocking since moving to Arizona
Views:
976
Posted By
Jay S
For now I would just pull more timing out. ...
For now I would just pull more timing out. Forget about adding octane booster on a daily driver. Drop the timing back too 28* total. It won’t give up that much power pulling some more timing...
Forum:
Pontiac - Race
06-09-2024, 01:29 AM
Replies:
21
Beehive pressures for HR cams
Views:
654
Posted By
Jay S
I have a HRT in a daily driver.
I have a HRT in a daily driver.
Forum:
Pontiac - Street
06-08-2024, 10:52 PM
Replies:
3
Solid Roller
Views:
201
Posted By
Jay S
Settings specs are for hot
Settings specs are for hot
Forum:
Pontiac - Race
06-08-2024, 03:07 PM
Replies:
21
Beehive pressures for HR cams
Views:
654
Posted By
Jay S
I recall Joe Sherman had a 366 Ram Air 5 on the...
I recall Joe Sherman had a 366 Ram Air 5 on the Dyno for Tom S that he took up to almost 7000 with a HR set up and dual springs. That probably had 2.19s. It was just a comp HR cam with magnum...
Forum:
Pontiac - Race
06-07-2024, 10:14 PM
Replies:
21
Beehive pressures for HR cams
Views:
654
Posted By
Jay S
Changing to a beehive from a dual spring the...
Changing to a beehive from a dual spring the minimum spring pressure drop most do is 10%, the max is about 25%. The lifter weight has nothing to do with that part of it, it all comes from less mass...
Forum:
Pontiac - Street
06-07-2024, 01:38 PM
Replies:
25
Thicker head gasket question
Views:
750
Posted By
Jay S
I don’t think there was a reproduction of the 067...
I don’t think there was a reproduction of the 067 in 1992. If you looked up a replacement cam in a book at that time I think it sub’d over too the 066 as a replacement. If it has an 068, which is...
Forum:
Pontiac - Street
06-07-2024, 07:50 AM
Replies:
25
Thicker head gasket question
Views:
750
Posted By
Jay S
The 66 GTO’s 4bbl std engine would have been a...
The 66 GTO’s 4bbl std engine would have been a 067. The tri power cam was the 068 and a few later tri power’s had the 744. It is pretty common for the 4bbl engines to receive a 066 after a...
Forum:
Pontiac - Street
06-03-2024, 10:38 AM
Replies:
25
Thicker head gasket question
Views:
750
Posted By
Jay S
Which stock replacement cam does it have? A cam...
Which stock replacement cam does it have? A cam change might be a better solution. Depending on how the rest of the drive train is set up it may need to be a custom grind. We have done some pretty...
Forum:
Pontiac - Street
06-02-2024, 11:07 PM
Replies:
40
Catastrophic Engine Failure
Views:
2,399
Posted By
Jay S
That’s a bummer. I don’t know but that...
That’s a bummer.
I don’t know but that high pitched growl sounds more like it started to locked up a needle bearing on one or more of the roller lifters.
Having a crank bearing fail and...
Forum:
Pontiac - Street
06-01-2024, 03:20 PM
Replies:
34
Best compression for Crower 60919 cam help
Views:
1,984
Posted By
Jay S
Good plan.
Good plan.
Forum:
Pontiac - Street
06-01-2024, 11:11 AM
Replies:
50
Read my plugs
Views:
1,981
Posted By
Jay S
If the car is tuned up enough to make short...
If the car is tuned up enough to make short trips like what was described I doubt the tune is that far off. With a pretty big CSA port and a 300+ cfm head running errands to Walmart, I think you...
Forum:
Pontiac - Street
05-29-2024, 08:26 AM
Replies:
50
Read my plugs
Views:
1,981
Posted By
Jay S
More time on those plugs would tell. If one plug...
More time on those plugs would tell. If one plug looked like that maybe it has a cylinder pumping oil. But I would expect the carbon deposits to be much thicker if that was from burning oil. It...
Forum:
Pontiac - Street
05-29-2024, 07:27 AM
Replies:
50
Read my plugs
Views:
1,981
Posted By
Jay S
FWIW…We run pretty cold plugs on pump gas engines...
FWIW…We run pretty cold plugs on pump gas engines that with a lot of street driving they can look a lot like that first picture. Usually not wet looking though. I don’t know if your interested in...
Forum:
Pontiac - Street
05-28-2024, 03:43 PM
Replies:
50
Read my plugs
Views:
1,981
Posted By
Jay S
You can start by checking the vacuum advance and...
You can start by checking the vacuum advance and see how much timing it is adding and make sure it is working. May not be an issue at all. If it is adjustable and set for adding less than 15* it...
Forum:
Pontiac - Street
05-28-2024, 12:02 PM
Replies:
50
Read my plugs
Views:
1,981
Posted By
Jay S
Lots of idling, and very limited or inoperable...
Lots of idling, and very limited or inoperable vacuum advance makes the plugs run cold and will look black and wet like that.
Forum:
Pontiac - Street
05-28-2024, 09:00 AM
Replies:
50
Read my plugs
Views:
1,981
Posted By
Jay S
A 12 should not be to cold of a spark plug. The...
A 12 should not be to cold of a spark plug. The photo shows it to be cold though, and has the appearance it has idled around a lot and is burning very rich. Possibly you are not running a vacuum...
Forum:
Pontiac - Street
05-28-2024, 07:35 AM
Replies:
17
Olds 12 bolt rear
Views:
834
Posted By
Jay S
That one has the same gears and can use the same...
That one has the same gears and can use the same carrier as a corporate 8.5, tons of parts for it, it is not a 12 bolt type O. It is a lot stronger than a type O. The type O has a larger 8.5? ring...
Forum:
Pontiac - Street
05-25-2024, 12:40 AM
Replies:
22
Safe level of horsepower in a 1977 XA 400 block build?
Views:
867
Posted By
Jay S
That is a hilarious. A 557 block and...
That is a hilarious.
A 557 block and stock d ports is more like picking up a chick at a church potluck. It could still go wrong, but you have decent odds, some of us drive 50 year old 10...
Forum:
Pontiac - Street
05-24-2024, 04:42 PM
Replies:
22
Safe level of horsepower in a 1977 XA 400 block build?
Views:
867
Posted By
Jay S
Kind of makes you wonder what kind of sales pitch...
Kind of makes you wonder what kind of sales pitch Butler’s do when selling 557.
Forum:
Pontiac - Street
05-24-2024, 03:24 PM
Replies:
22
Safe level of horsepower in a 1977 XA 400 block build?
Views:
867
Posted By
Jay S
The 557’s I have seen that broke had the crack...
The 557’s I have seen that broke had the crack start at the dowels, then work it’s way over to whatever area was next weakest. Some blocks have small cracks at the dowels that just barely started,...
Forum:
Pontiac - Street
05-24-2024, 09:48 AM
Replies:
28
Street recipe: 670 vs. 6x-4
Views:
1,453
Posted By
Jay S
The machinist will know that the block will need...
The machinist will know that the block will need line honed when you tell them you want to run ARP studs. The extra clamping force of the main studs distorts the caps quite a bit.
A good...
Forum:
Pontiac - Street
05-24-2024, 09:24 AM
Replies:
34
Best compression for Crower 60919 cam help
Views:
1,984
Posted By
Jay S
If the 995 springs are too spec and set up...
If the 995 springs are too spec and set up correctly they will work fine. If those heads cam from SD performance I think he would have checked their pressures.
The Vpro or Vmax lifters will...
Forum:
Pontiac - Street
05-23-2024, 07:28 PM
Replies:
22
Safe level of horsepower in a 1977 XA 400 block build?
Views:
867
Posted By
Jay S
Jeff I think the better question is how many old...
Jeff I think the better question is how many old 400 blocks does Butler’s have left since they are selling 557s instead. Lol
All the 1977 400s where 557s. In 78 I think the XA code was a 301
Showing results 1 to 25 of 500
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