Forum: Pontiac - Race
02-14-2026, 03:06 PM
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Replies: 53
Views: 4,264
ARP8740 vs ARP2000 rod bolts
Block/crank/rods/pistons for my 462 build are going to the machine shop next week for bore/hone & balance.
The I-beam rods I bought for this project were advertised as having ARP2000 bolts which I...
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Forum: Suspension TECH
12-20-2025, 11:47 PM
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Replies: 22
Views: 2,844
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Forum: Pontiac - Street
12-04-2025, 12:57 PM
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Replies: 8
Views: 558
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Forum: 70-72 GTO Tempest & LeMans TECH
11-27-2025, 10:51 AM
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Replies: 7
Views: 441
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Forum: The Body Shop TECH
11-18-2025, 11:14 PM
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Replies: 12
Views: 697
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Forum: Pontiac - Race
11-18-2025, 06:57 PM
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Replies: 53
Views: 4,264
Hi Glenn,
I specifically plan to do Kirkland...
Hi Glenn,
I specifically plan to do Kirkland Lake as it is just under 2 hours away, and perhaps Bonfield (close to North Bay), both are 1/8th mile. K.L is two weekends a summer and Bonfield is 3...
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Forum: The Body Shop TECH
11-18-2025, 01:46 PM
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Replies: 12
Views: 697
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Forum: Pontiac - Race
11-17-2025, 08:40 PM
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Replies: 53
Views: 4,264
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Forum: Pontiac - Race
11-16-2025, 08:50 AM
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Replies: 53
Views: 4,264
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Forum: Pontiac - Race
11-16-2025, 08:48 AM
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Replies: 53
Views: 4,264
Thanks Tom.
When I picked up the 73 block...
Thanks Tom.
When I picked up the 73 block and we reviewed the numbers, the machinist said he was most concerned about the #7 wall with a .107" thickness (non-thrust side) knowing I would be using...
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Forum: Pontiac - Race
11-15-2025, 03:57 PM
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Replies: 53
Views: 4,264
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Forum: Pontiac - Race
11-15-2025, 03:54 PM
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Replies: 53
Views: 4,264
I am far past the point of considering the...
I am far past the point of considering the purchase of an existing race car. I'm building my own and have collected all the parts over the past year so let's focus on helping me achieve that....
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Forum: Pontiac - Race
11-15-2025, 10:37 AM
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Replies: 53
Views: 4,264
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Forum: Pontiac - Race
11-15-2025, 10:32 AM
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Replies: 53
Views: 4,264
Try again
I only want to do this once, so I sent the 71 block in for the same work to see if it was better, thinking I will use whichever one is better in the bore area.
The 71 is better. Cylinder #5 & 7...
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Forum: Pontiac - Race
11-15-2025, 10:27 AM
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Replies: 53
Views: 4,264
Pick a block!
Lastly, I weighed both blocks to see if there was a difference...there sure was. Using a digital bathroom scale, the 71 block weighed 192 lbs vs the 73 block that weighed 201 pounds. This was with...
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Forum: Pontiac - Race
11-15-2025, 10:12 AM
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Replies: 53
Views: 4,264
Looking at the area where the motor mounts are...
Looking at the area where the motor mounts are located, I saw another difference.
The 71 block has a bar or lug running below the pan rail where the bolt bosses are, whereas the 73 block has an...
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Forum: Pontiac - Race
11-15-2025, 10:06 AM
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Replies: 53
Views: 4,264
Next thing I noticed was that the 73 block had...
Next thing I noticed was that the 73 block had more material under the bores where the oil galley is located. On that block, there is a bevelled area between the bottom of the bores and the lifters....
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Forum: Pontiac - Race
11-15-2025, 09:57 AM
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Replies: 53
Views: 4,264
Looking further at the castings, they are very...
Looking further at the castings, they are very different in how the molds were created, and the 73 block is thicker in many areas around the mains compared to the 71.
The 71 block is on the left....
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Forum: Pontiac - Race
11-15-2025, 09:52 AM
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Replies: 53
Views: 4,264
Back at it
Back at this, and have collected all the parts to build the motor this winter.
Build will be a 400 block, 4.250" forged stroker crank, SM 72cc heads, Ross .040" dished pistons (dish still to be...
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Forum: Suspension TECH
08-17-2025, 08:45 AM
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Replies: 27
Views: 2,039
I tried getting my wheels balanced at the local...
I tried getting my wheels balanced at the local garage using their lug centric adaptor but it was not working. Their adaptor used spring pressure to center in the lug holes and on several of my GM...
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Forum: Suspension TECH
08-17-2025, 08:30 AM
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Replies: 9
Views: 956
I balanced 4 stock 15" Rally 2s and 2 Wheel...
I balanced 4 stock 15" Rally 2s and 2 Wheel Vintiques 15" Rally 2s.
The stock wheels are certainly not well made. Noticeable wobble even when balanced with lugcentric adapter. The WV were straight...
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Forum: The Body Shop TECH
08-14-2025, 07:30 AM
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Replies: 23
Views: 1,223
Bristle disc's work well, but even the coarse...
Bristle disc's work well, but even the coarse green ones may leave a surface that is too smooth for best primer adhesion (I learned the hard way :( )
Once cleaned up, hand sand with fresh 40-80...
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Forum: The Body Shop TECH
08-01-2025, 08:10 PM
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Replies: 2
Views: 443
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Forum: The Body Shop TECH
07-28-2025, 09:51 PM
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Replies: 5
Views: 500
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Forum: Interior TECH
07-26-2025, 08:04 AM
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Replies: 1
Views: 404
You are correct, there are only 4 screws on the...
You are correct, there are only 4 screws on the hinge, 2 to connect hinge to console and 2 to connect hinge to lid.
Perhaps the 3 extra screws are for connecting the console to the floor? Although...
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