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Posts Made By:
Gary H
Forum:
Pontiac - Street
Today, 07:27 AM
Replies:
6
Dyno testing 3 intakes on my 462
Views:
181
Posted By
Gary H
Definitely try a 1" to 1.5" inch spacer on each...
Definitely try a 1" to 1.5" inch spacer on each intake when you dyno them. On one of my street cars with an engine similar to yours, adding a 1" spacer to the RPM intake picked up a tenth in the...
Forum:
Pontiac - Street
03-10-2024, 04:39 PM
Replies:
33
CAM CHOICE
Views:
1,553
Posted By
Gary H
I have a shop here in Jacksonville, Florida and...
I have a shop here in Jacksonville, Florida and do nothing but Pontiac's. We've built over 150 Pontiac engines. I think the combination you described is pretty good all the way around. Your vacuum...
Forum:
Pontiac - Street
01-26-2024, 12:44 PM
Replies:
9
400 small register crank strength
Views:
2,294
Posted By
Gary H
Thanks Paul! I thought I had heard that a while...
Thanks Paul! I thought I had heard that a while back too. I'm going to use it.
Forum:
Pontiac - Street
01-26-2024, 09:27 AM
Replies:
46
Who has successfully installed a hydraulic flat tappet cam recently?
Views:
3,955
Posted By
Gary H
I've built about 10 flat hydraulic flat tappet...
I've built about 10 flat hydraulic flat tappet lifter Pontiac engines over the last 2 years. No issues on them. I only use Hy-lift Johnson lifters though.
Forum:
Pontiac - Street
12-08-2023, 06:44 PM
Replies:
65
Too big main clearance after alignhone
Views:
6,764
Posted By
Gary H
That's a BIG variance from main to main. If...
That's a BIG variance from main to main. If those numbers are accurate, I would take it back to the machine shop and see what's up. Just a FYI, Clevite bearings generally will measure thicker than...
Forum:
Pontiac - Street
12-06-2023, 04:18 PM
Replies:
25
Fuel delivery issue
Views:
1,233
Posted By
Gary H
If the pump has a return line from the pump to...
If the pump has a return line from the pump to the tank that was still hooked up during the 15 minutes of run time, then most of the fuel went back to the tank through the return.
Forum:
Pontiac - Street
11-27-2023, 02:43 PM
Replies:
24
engine surging
Views:
1,562
Posted By
Gary H
What power piston spring did you put in the carb?...
What power piston spring did you put in the carb? The ram air IV cam doesn't create much vacuum in a 400 and the wrong spring may be causing the issue. You may also want to check and make sure you...
Forum:
Pontiac - Street
11-27-2023, 09:46 AM
Replies:
5
No spark with FiTECH
Views:
873
Posted By
Gary H
Check and see if the handheld is showing any RPM...
Check and see if the handheld is showing any RPM while trying to crank the engine.
Forum:
Pontiac - Race
11-15-2023, 03:01 PM
Replies:
19
Pcv grommet?
Views:
1,177
Posted By
Gary H
If the valley pan you have is the single piece...
If the valley pan you have is the single piece one, it is very prone to suck oil through the PCV valve. I never use those. I'd buy a reproduction piece pan and use that.
Forum:
Pontiac - Street
09-07-2023, 07:18 PM
Replies:
41
Rod Clearance - Tracking down .005
Views:
1,991
Posted By
Gary H
.003 is a little on the loose side for a strictly...
.003 is a little on the loose side for a strictly street engine IMO. I'd try a different brand bearing to see if it's a little thicker to get you closer to .002 or .0025. In my experience, Clevite...
Forum:
Pontiac - Street
06-08-2023, 07:12 PM
Replies:
11
Oil support rail issue
Views:
669
Posted By
Gary H
Sure sounds like it. I'd measure the grove and...
Sure sounds like it. I'd measure the grove and then contact Ross.
Forum:
Pontiac - Street
05-30-2023, 07:48 AM
Replies:
21
Oil pan gasket
Views:
1,496
Posted By
Gary H
X2 on the above. I always use the cork seal on...
X2 on the above. I always use the cork seal on the seal with the tabs on it. Had much better results over the years with it.
Forum:
Pontiac - Street
05-29-2023, 12:11 PM
Replies:
22
455 identification.?
Views:
1,563
Posted By
Gary H
No, It's the same identical casting as any other...
No, It's the same identical casting as any other block that year. Pontiac used the same casting number for all 71' - 74' 455 blocks except the SD blocks. The 73' - 74' 455 SD blocks had multiple...
Forum:
Pontiac - Street
04-08-2023, 08:25 AM
Replies:
174
Molnar rods and cranks
Views:
13,657
Posted By
Gary H
So far, the maximum has been a 875 Hp pump gas...
So far, the maximum has been a 875 Hp pump gas engine. I'm currently building an all aluminum engine that has dual Torquestorms on it that should hit 1100 HP. Using Molnar crank and power adder rods
Forum:
Pontiac - Street
04-07-2023, 07:32 PM
Replies:
174
Molnar rods and cranks
Views:
13,657
Posted By
Gary H
I do, and have, used Molnar rods and cranks in...
I do, and have, used Molnar rods and cranks in most of the builds I do for customers. As several have mentioned previously, the rods and cranks are dead on spec wise. I pay a little more up front...
Forum:
67-69 Firebird TECH
03-12-2023, 05:30 PM
Replies:
4,300
eBay sightings
Views:
716,284
Posted By
Gary H
Bought this car.
Because it was listed on this thread I recently bought this 72' Lemans GT. Amazingly solid southern California car with original paint. Thank you for posting these cars!
Forum:
Pontiac - Street
02-17-2023, 10:06 PM
Replies:
16
Hydraulic roller cam cores
Views:
1,243
Posted By
Gary H
OK, I got a hydraulic roller from Mark at Luhn...
OK, I got a hydraulic roller from Mark at Luhn Performance. He had one in stock that was pretty much the specs I was looking for. Also ordered his oil pump for the engine as well.
Forum:
Pontiac - Street
02-14-2023, 08:09 PM
Replies:
59
Pontiac hardened valve seat issues
Views:
5,376
Posted By
Gary H
I've had three different Pontiac engines in my...
I've had three different Pontiac engines in my shop that had bad recessed exhaust valves. Two engines had 6X heads on them, and other was a mid 60's head. One head had two exhaust valves sunk so...
Forum:
Pontiac - Street
02-05-2023, 05:18 PM
Replies:
9
JPR Timing Sets
Views:
1,207
Posted By
Gary H
Cloyes only for me. And I absolutely will not...
Cloyes only for me. And I absolutely will not use any RollMaster sets. I've had several in here that were off on sprocket inside dimensions and also when degreeing them in.
Forum:
Pontiac - Race
01-31-2023, 07:15 PM
Replies:
21
My 66 ready to go!
Views:
2,657
Posted By
Gary H
I run a 33" tall tire and 4:33 gears. At 154 MPH...
I run a 33" tall tire and 4:33 gears. At 154 MPH I'm at around 7700 RPM's. Partially depends on how tight your convertor is. I don't think a little less gear will hurt you as light as your car is.
Forum:
Pontiac - Race
01-30-2023, 10:02 AM
Replies:
21
My 66 ready to go!
Views:
2,657
Posted By
Gary H
I love the look and finish on your car! Just...
I love the look and finish on your car! Just curious on what tire size you have on it. With a 4:56 gear you may be turning A LOT of rpm's at the big end especially if you think it's going to run...
Forum:
Pontiac - Street
01-03-2023, 07:25 PM
Replies:
18
Factory 455 Crank Anomaly
Views:
1,995
Posted By
Gary H
Factory 455 Crank Anomaly
I recently disassembled a 455 engine that had been installed in a 79' Trans Am by a previous owner. The engine ran great for what it was; 455 with 6X heads, decent camshaft, Holley, etc.. At the...
Forum:
Pontiac - Race
12-31-2022, 05:44 PM
Replies:
47
REALLY FAST CARS Post up your Opinions Examples
Views:
6,211
Posted By
Gary H
Picking up .12 ET, and 3.5 MPH with the...
Picking up .12 ET, and 3.5 MPH with the transmission change is incredible in my mind, especially at that fast of a ET and the toughness of the N.A. class you run in. I'm really surprised. ...
Forum:
Pontiac - Race
12-27-2022, 09:52 AM
Replies:
47
REALLY FAST CARS Post up your Opinions Examples
Views:
6,211
Posted By
Gary H
Interesting Paul. I didn't know that he went the...
Interesting Paul. I didn't know that he went the manual transmission route. Do you know how much it picked up?
Forum:
Pontiac - Race
11-16-2022, 08:46 AM
Replies:
77
Just my .02
Views:
7,984
Posted By
Gary H
I'm with Paul on this one. I don't mind a little...
I'm with Paul on this one. I don't mind a little back and forth regarding their opinion on what works or not. But some people go nuclear over every thread they're on. And then there's a certain...
Showing results 1 to 25 of 77
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