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Search took 0.03 seconds. Search: Posts Made By: 74Grandville
Forum: Pontiac - Street 01-26-2024, 02:31 PM
Replies: 46
Views: 3,459
Posted By 74Grandville
Crower sft with crower lifters. Lucas muscle car...

Crower sft with crower lifters. Lucas muscle car 10w-30 oil. Correct valve spring pressure and geometry I’m sure helps.

I’ve had 2 failures in my life.

First was back in 2003 when I had no...
Forum: Pontiac - Street 12-08-2023, 02:26 PM
Replies: 60
Views: 7,423
Posted By 74Grandville
both of these are great books!! i've learned so...

both of these are great books!! i've learned so much from them. Thank you Cliff!!
Forum: Pontiac - Street 11-16-2023, 01:20 PM
Replies: 53
Views: 2,409
Posted By 74Grandville
another vote for the Summit 2800, The stock L78...

another vote for the Summit 2800, The stock L78 cam is tinny.

2801 might work too, but with the bevel stock piston, compression will still be pretty low.
Forum: Pontiac - Street 10-08-2023, 08:00 PM
Replies: 8
Views: 1,017
Posted By 74Grandville
i'm not an expert on RAIV, but i think that is...

i'm not an expert on RAIV, but i think that is normal for factory 400 RAIV. That is a big cam!

i'm running a crower solid 60311 in a 428 at 10.6:1 compression and only see ~6-7 hg. i think of...
Forum: Pontiac - Street 09-05-2023, 11:22 AM
Replies: 24
Views: 1,365
Posted By 74Grandville
Great Thread!! reminds me of my 74Grandville. it...

Great Thread!! reminds me of my 74Grandville. it was the car that got me into the hobby.
Forum: Pontiac - Street 06-15-2023, 05:22 PM
Replies: 23
Views: 1,923
Posted By 74Grandville
Correct, that is the current setup. I did some...

Correct, that is the current setup. I did some initial porting to raise the roof on the HSD, but found I needed to have it machined some to fit my setup properly. my machinist ended up having...
Forum: Pontiac - Street 06-14-2023, 08:56 PM
Replies: 23
Views: 1,923
Posted By 74Grandville
So I actually did 2 engine swaps last year. the...

So I actually did 2 engine swaps last year. the engine in my 77 finally failed, but the 428 was to rowdy for that car i felt. I moved the W72 I built from my TA to the Formula and installed the 428...
Forum: Pontiac - Street 06-14-2023, 08:52 PM
Replies: 23
Views: 1,923
Posted By 74Grandville
More

More
Forum: Pontiac - Street 06-14-2023, 08:28 PM
Replies: 23
Views: 1,923
Posted By 74Grandville
https://youtu.be/0yZj5-n_Qpg @Steve - I...

https://youtu.be/0yZj5-n_Qpg

@Steve - I stole your idea about blocking the 4bolt holes. I bought ball bearings and tighten a stud onto them to hopefully strenghen the area. I used red loctite on...
Forum: Pontiac - Street 06-14-2023, 03:59 PM
Replies: 23
Views: 1,923
Posted By 74Grandville
428 SpeedMaster heads Dyno Results

HI guys, I'd figured i'd post some results of a Chassis Dyno pull I just had done on my car. This was not a tuning session, but i did have them raise the timing 2 degrees. I ended up with 400HP and...
Forum: Pontiac - Street 05-31-2023, 08:01 AM
Replies: 22
Views: 1,432
Posted By 74Grandville
I’ve owned a 70 455 YH. It had 2bolt main caps ...

I’ve owned a 70 455 YH. It had 2bolt main caps


Sent from my iPhone using Tapatalk
Forum: Pontiac - Street 03-22-2023, 09:39 PM
Replies: 20
Views: 2,108
Posted By 74Grandville
a thick head gasket is a bad idea. better to run...

a thick head gasket is a bad idea. better to run a dished piston.
Forum: Pontiac - Street 03-14-2023, 12:48 PM
Replies: 21
Views: 1,577
Posted By 74Grandville
I went with restricted in my application as I...

I went with restricted in my application as I have full roller rockers and speed master heads. The drain back on the speed masters doesn’t look as good as factory.


Sent from my iPhone using...
Forum: Pontiac - Street 01-26-2023, 01:01 PM
Replies: 44
Views: 3,661
Posted By 74Grandville
180 and a good cooling system has worked for me...

180 and a good cooling system has worked for me (clutch fan, 4 core copper or 2 Core alluminum radiator and proper tune.)

195 you'll probably fight Detonation.
Forum: Pontiac - Street 01-26-2023, 12:45 PM
Replies: 9
Views: 964
Posted By 74Grandville
never heard of anyone drilling the plugs in the...

never heard of anyone drilling the plugs in the front of the block to lube chain. why modify what the factory did?
Forum: Pontiac - Street 12-30-2022, 06:08 PM
Replies: 17
Views: 2,298
Posted By 74Grandville
I would use some oil resistant RTV between the...

I would use some oil resistant RTV between the pan and the cork gasket that goes over the rear main cap. Original pan had an indent to hold the cork in place where the summit pan doesn't have that...
Forum: Pontiac - Street 11-22-2022, 08:38 PM
Replies: 87
Views: 19,049
Posted By 74Grandville
I finally got my engine running with the...

I finally got my engine running with the speedmasters i picked up around 2018. So far so good. it's been 3 days since breakin.

couple things I did

1. I smoothed the sharp edges in ports.
2....
Forum: Pontiac - Street 10-04-2022, 03:06 PM
Replies: 15
Views: 1,317
Posted By 74Grandville
not a good idea. carb tune, distributor tune...

not a good idea.

carb tune, distributor tune and make sure the engine is running cool are your best options. might want to consider cam choice as well.
Forum: Pontiac - Street 07-05-2022, 08:33 PM
Replies: 20
Views: 2,421
Posted By 74Grandville
Crankshaft end play

No

Spec is 6-11 thou

Sent from my iPhone using Tapatalk
Forum: Pontiac - Street 06-05-2022, 06:28 PM
Replies: 73
Views: 8,829
Posted By 74Grandville
Sorry for your loss T.J. He will be missed.

Sorry for your loss T.J. He will be missed.
Forum: Pontiac - Street 06-01-2022, 11:06 PM
Replies: 13
Views: 2,136
Posted By 74Grandville
someone probably tightened the Q-jet top without...

someone probably tightened the Q-jet top without ensuring the rods were in the jets and held in by the collar.

your carb will run much better once this is corrected ;)
Forum: Pontiac - Street 05-31-2022, 09:39 PM
Replies: 57
Views: 7,966
Posted By 74Grandville
your questions have the correct answers. the...

your questions have the correct answers. the other consideration is the hanger. A = richer Z = Leaner

i did a quick search on google.

https://www.carburetion.com/rodshang.asp
...
Forum: Pontiac - Street 03-23-2022, 10:36 AM
Replies: 25
Views: 2,834
Posted By 74Grandville
48's have a 350 chamber, 62 has a 400 chamber....

48's have a 350 chamber, 62 has a 400 chamber. this can be seen when placing a gasket on them.
Forum: Pontiac - Street 03-14-2022, 06:40 PM
Replies: 22
Views: 3,644
Posted By 74Grandville
The Same. the difference was in the heads/cam...

The Same. the difference was in the heads/cam not the pistons
Forum: Pontiac - Street 03-12-2022, 07:17 PM
Replies: 6
Views: 1,025
Posted By 74Grandville
It’s to control the vacuum advance depending on...

It’s to control the vacuum advance depending on temp.

Pic is wrong year, but same idea.https://uploads.tapatalk-cdn.com/20220312/179243731ac06d473608ebb14e4f9400.gif


Sent from my iPhone...
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