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Search took 0.04 seconds. Search: Posts Made By: 67Lemons
Forum: Pontiac - Street 04-24-2024, 05:06 PM
Replies: 37
Views: 2,207
Posted By Formulajones
They use Johnson bodies which is good quality to...

They use Johnson bodies which is good quality to start with. And with the lube option it's about as good as a flat tappet gets. Nitride the cam on top of that and it's a pretty solid setup. I don't...
Forum: Pontiac - Street 04-20-2024, 08:21 AM
Replies: 5
Views: 507
Posted By HWYSTR455
I see no reason to pin studs if you have it...

I see no reason to pin studs if you have it apart, just convert to screw in. That can actually be done on the car if you're careful. I think I still have an H-O guide for drilling somewhere, but...
Forum: Pontiac - Street 04-17-2024, 09:46 AM
Replies: 5
Views: 507
Posted By Skip Fix
High performance 409s used pinned studs from the...

High performance 409s used pinned studs from the factory.
Forum: Pontiac - Street 04-17-2024, 05:48 AM
Replies: 5
Views: 507
Posted By steve25
Well then run your #15s and if you can get it...

Well then run your #15s and if you can get it done local enough and afford it get the studs pinned.

If you or a buddy have a decent drill press you can do it yourself.
Forum: Pontiac - Street 03-17-2024, 05:45 PM
Replies: 6
Views: 507
Posted By steve25
No, there a bolt on.

No, there a bolt on.
Forum: Pontiac - Street 03-17-2024, 11:51 AM
Replies: 6
Views: 507
Posted By steve25
Since the 670 heads in stock form are closer to...

Since the 670 heads in stock form are closer to 74 CCs and now being rebuilt with a valve job your likely right back in the 75 to 76 CC area.

The closed chamber heads like the 670s are lees likely...
Forum: 67-69 Firebird TECH 02-29-2024, 09:06 PM
Replies: 4,193
Views: 679,057
Posted By Verdoro 68
Who are these people who upload screenshots to...

Who are these people who upload screenshots to eBay? It's more effort than uploading an actual photo.
Forum: Pontiac - Street 02-21-2024, 06:39 AM
Replies: 99
Views: 5,638
Posted By Formulajones
I'll be doing oil analysis on 2 new engines...

I'll be doing oil analysis on 2 new engines shortly.

So I'm going to use a wix on one and a Baldwin in the other and take note how they do for how long.

I've done this in the past to establish...
Forum: Pontiac - Street 02-12-2024, 03:30 PM
Replies: 32
Views: 3,778
Posted By b-man
Gladly. After you stop referring to yourself...

Gladly.

After you stop referring to yourself in the third person, as requested by a moderator and numerous other members.

We know who’s posting by looking at your username, stop it already.
...
Forum: Pontiac - Street 02-10-2024, 05:13 PM
Replies: 43
Views: 2,299
Posted By Lee
I was a bit curious about what sort of...

I was a bit curious about what sort of performance I could get with the non-adjustable valvetrain, and also with a low-compression 87 octane limit.

I've gone 11.2's with flat tappet cam and iron...
Forum: Pontiac - Street 02-10-2024, 02:19 PM
Replies: 52
Views: 2,449
Posted By Shiny
Paul - Thank you for taking the time to explain. ...

Paul - Thank you for taking the time to explain.

It makes a LOT more sense now. Here's a couple snapshots I took off a Youtube video that illustrates how the cam profile can cause the contact...
Forum: Pontiac - Street 02-10-2024, 12:12 PM
Replies: 43
Views: 2,299
Posted By Lee
222/242 @ 0.050", .443/.435 valve lift, 116lsa. ...

222/242 @ 0.050", .443/.435 valve lift, 116lsa. It has been on a 111icl, but I just changed that to 113 (and installed a converter with a bit more stall). I had the cam custom ground at Bullet.
...
Forum: Pontiac - Street 02-09-2024, 08:39 PM
Replies: 43
Views: 2,299
Posted By SD455DJ
Your ’68 #15 heads are listed at 75 cc chambers...

Your ’68 #15 heads are listed at 75 cc chambers (10.5 advertised compression) and the ’70 #16 heads are listed as having 78 cc chambers (10.0 advertised compression). My #16’s measured 80 cc’s before...
Forum: Pontiac - Street 02-09-2024, 05:15 PM
Replies: 43
Views: 2,299
Posted By b-man
All the 1967 - 1970 400 and 428 big-valve high...

All the 1967 - 1970 400 and 428 big-valve high compression heads are listed as having 72cc chamber cylinder heads but very few actually are.

The later years had the larger chambers, and the ones...
Forum: Pontiac - Street 02-09-2024, 04:58 PM
Replies: 43
Views: 2,299
Posted By PAUL K
62 heads are usually 75 CC from the factory and...

62 heads are usually 75 CC from the factory and come in around 76-78 CC after a rebuild.
Forum: Pontiac - Street 02-08-2024, 06:05 PM
Replies: 43
Views: 2,299
Posted By b-man
It all boils down to you’re best off staying with...

It all boils down to you’re best off staying with a factory performance cam and stock 1.5:1 rockers if you’re not going to pony up for the valvetrain upgrades required to run higher spring pressures...
Forum: Pontiac - Street 02-08-2024, 05:57 PM
Replies: 43
Views: 2,299
Posted By i82much
That's cool ... but yeah ... not worth it for the...

That's cool ... but yeah ... not worth it for the average guy.
Forum: Pontiac - Street 02-08-2024, 05:54 PM
Replies: 43
Views: 2,299
Posted By b-man
Yes, a Tapmatic. ...

Yes, a Tapmatic.

https://www.travers.com/product/tapmatic-50x-self-reversing-tapping-head-85-001-144

However for $915 you’re better off doing it by hand or paying a machine shop.

You’d...
Forum: Pontiac - Street 02-08-2024, 05:39 PM
Replies: 43
Views: 2,299
Posted By Dragncar
Bridgeport !

Bridgeport !
Forum: Pontiac - Street 02-08-2024, 05:11 PM
Replies: 43
Views: 2,299
Posted By i82much
do they make anything that would allow you to use...

do they make anything that would allow you to use a conventional drill press to tap the holes?
Forum: Pontiac - Street 02-08-2024, 11:46 AM
Replies: 43
Views: 2,299
Posted By 4zpeed
Just do your homework that's all I'm saying,...

Just do your homework that's all I'm saying, there's a certain amount of money it's going to take to put the heads you have in service, that's if you decide on the 068 or upgrade. If you can find a...
Forum: Pontiac - Street 02-08-2024, 11:45 AM
Replies: 43
Views: 2,299
Posted By Formulas
The thing about 3/8 pressed in studs is when you...

The thing about 3/8 pressed in studs is when you stray away from original rocker lock nuts, they keep the rocking stress off of the thin sections of the stud
Forum: Pontiac - Street 02-08-2024, 10:23 AM
Replies: 43
Views: 2,299
Posted By Cliff R
Agreed, the 068 cam fits the bill nicely here,...

Agreed, the 068 cam fits the bill nicely here, plus you can run stock spring loads on it, light weight stock retainers, stamped steel rocker arms, etc. This takes away some of the things I feel are...
Forum: Pontiac - Street 02-08-2024, 10:17 AM
Replies: 43
Views: 2,299
Posted By Jay S
Keeping with 1.5s, with no jump in lift against a...

Keeping with 1.5s, with no jump in lift against a 068 is the Melling SPC-3 (744). It does not have the dwell over the nose of the old 744 cam, and doesn’t require extra spring pressure over a...
Forum: Pontiac - Street 02-08-2024, 10:10 AM
Replies: 43
Views: 2,299
Posted By SD455DJ
Thanks! I forgot about the '68 #15's! They looks...

Thanks! I forgot about the '68 #15's! They looks very similar cc-wise to the small valve '70 #16's which measured 78 cc's +/- after a minimal resurfacing. As Cliff said, don't underestimate these...
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