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Forum: Pontiac - Street 12-29-2010, 07:01 PM
Replies: 18
Views: 534
Posted By d1mbu1b
ok... had a look today #46 heads 72cc ...

ok...
had a look today
#46 heads 72cc
sounded fine.
could not get more specific on cam other than "mild"
and could not get specific on when the head gaskets were done.
They were wiling to share...
Forum: Pontiac - Street 12-29-2010, 11:12 AM
Replies: 18
Views: 534
Posted By d1mbu1b
great information guys. I really do appreciate...

great information guys.
I really do appreciate all the help.

It sounds like there is a 99% likelyhood that a stock 428 run for an extended period of time on street gas will have piston and ring...
Forum: Pontiac - Street 12-28-2010, 09:05 PM
Replies: 18
Views: 534
Posted By d1mbu1b
Thank you everybody for your help. I can get...

Thank you everybody for your help.

I can get the info on the type of heads but nothing more.
The motor is assumed to be stock.
(With the exception of aluminum intake, hei, and alternator.)

I...
Forum: Pontiac - Street 12-28-2010, 02:22 PM
Replies: 18
Views: 534
Posted By d1mbu1b
health of stock 428 on todays gas

Is it safe/possible to run a stock 428 on today's gas?
looking to buy one advertised as "turn key".

the only mods have been alum intake, hei distributor, and alternator swap.
no valve seats, no...
Forum: Pontiac - Street 05-13-2009, 11:16 AM
Replies: 10
Views: 448
Posted By d1mbu1b
dumb dumb questions

Are these three steps or three options?
How much will each remove?
Forum: Pontiac - Street 05-13-2009, 07:33 AM
Replies: 5
Views: 509
Posted By d1mbu1b
1.175"

1.175"
Forum: Pontiac - Street 05-08-2009, 08:56 AM
Replies: 24
Views: 2,616
Posted By d1mbu1b
I have an untouched 061 sitting right next to me....

I have an untouched 061 sitting right next to me.
Let me know what pictures you would like to see.
It would be very interesting for me to see the untouched befores next to Mr. P-Body's afters.
...
Forum: Pontiac - Street 05-08-2009, 08:36 AM
Replies: 26
Views: 1,201
Posted By d1mbu1b
you'll notice in Ken's links that the rod...

you'll notice in Ken's links that the rod diameter can be for BBC or Pontiac and the major diff between 428 and 400 is the main size 3.00" vs 3.25"

also, since there are only a couple off the...
Forum: Pontiac - Street 05-07-2009, 10:56 AM
Replies: 2
Views: 392
Posted By d1mbu1b
Unhappy 061 valve length

First, thank you everybody for humoring all of my posts...


The valves that came (disassembled) with my 061 heads measure 0.341" wide
by 5.14" from tip to base (with a caliper) for both intake...
Forum: Pontiac - Street 05-06-2009, 12:49 PM
Replies: 4
Views: 244
Posted By d1mbu1b
valve back face rings

what are you opinions on cutting grooves into the back of the intake valve...
http://www.allpar.com/fix/holler/valve-prepping.html

and what about on the short turn radius?...
Forum: Pontiac - Street 05-05-2009, 09:03 AM
Replies: 24
Views: 2,616
Posted By d1mbu1b
How do you get an accurate measurement? When...

How do you get an accurate measurement?

When I measured my 061s (several times)
I always get a different number ranging from 72 to 80 cc.
I have a syringe and Plexiglas plate.

Maybe I am...
Forum: Pontiac - Street 05-03-2009, 02:29 PM
Replies: 5
Views: 509
Posted By d1mbu1b
(olds pistons) please don't ban me from the forum

It seems like an oldsmobile 350+060 piston has the exact same dimensions as a pontiac 428 stock piston. http://kb-silvolite.com/spistons.php?action=details&S_id=566

.9805 pin, 1.595 CH, 4.057+060...
Forum: Pontiac - Street 05-02-2009, 09:04 AM
Replies: 3
Views: 403
Posted By d1mbu1b
ebay pistons

Anyone heard of "rebuilder's choice" pistons sold out of Jacksonville Florida?
I did a search and didn't find any info......
Forum: Pontiac - Street 02-09-2009, 05:21 PM
Replies: 7
Views: 257
Posted By d1mbu1b
How about a nut, long screwdriver, and a fish...

How about a nut, long screwdriver, and a fish scale.
place the nut on the rocker stud
place the screwdriver on the valve and under the nut
hang the fish scale on the end of the screwdriver 10...
Forum: Pontiac - Street 02-09-2009, 03:09 PM
Replies: 7
Views: 257
Posted By d1mbu1b
thanks for the help. So how do you...

thanks for the help.


So how do you measure the spring pressure?

Say for example I want to see if my old springs are still springing properly.

thanks again
Forum: Pontiac - Street 02-09-2009, 03:00 PM
Replies: 17
Views: 337
Posted By d1mbu1b
are you 180 out?

are you 180 out?
Forum: Pontiac - Street 02-09-2009, 10:45 AM
Replies: 7
Views: 257
Posted By d1mbu1b
valve springs Q

Can one use BBF springs in a Pontiac head?
Forum: SOLD Parts 02-05-2009, 02:04 PM
Replies: 6
Views: 416
Posted By d1mbu1b
Will you be at old town Kissimmee the 28th for...

Will you be at old town Kissimmee the 28th for the Pontiac swap meet?
I could be convinced that I need drip rails, if so...
Forum: Pontiac - Street 02-04-2009, 08:27 AM
Replies: 14
Views: 408
Posted By d1mbu1b
That's a better question. Is very little quench...

That's a better question.
Is very little quench area better than none at at?

So with that in mind which of the two is safer:
squish - The zero decked 10.4:1(8.3dynamic)
no squish - or the stock...
Forum: Pontiac - Street 02-03-2009, 03:33 PM
Replies: 14
Views: 408
Posted By d1mbu1b
is it possible to get a durable coating 030...

is it possible to get a durable coating 030 thick?


trying to achieve quench without paying money to deck the block by adding some "material" whatever that may be, by whatever means to mirror the...
Forum: Pontiac - Street 02-03-2009, 10:13 AM
Replies: 14
Views: 408
Posted By d1mbu1b
add material to piston Q

At the risk of sounding ignorenter...

Can you add material to the to piston surface?

Instead of paying a machinist to zero deck your block,
can you add some material to the top of your stock ...
Forum: Pontiac - Street 01-30-2009, 09:22 AM
Replies: 3
Views: 175
Posted By d1mbu1b
http://www.holley.com/BrowseCatalogs.asp?Catalog=H...

http://www.holley.com/BrowseCatalogs.asp?Catalog=Holley&Page=87


See the note on the page above.
Some jets have the same size hole and a different leading edge.
It says the jets are rated by...
Forum: Pontiac - Street 01-29-2009, 12:13 PM
Replies: 48
Views: 2,647
Posted By d1mbu1b
That sounds fun. Driving down the road minding...

That sounds fun.
Driving down the road minding your own business with the cruise set at 45 mph.
You start to climb a hill and the cruise control steps on the gas for you!!!
800 Hp gets unleashed...
Forum: Pontiac - Street 01-29-2009, 11:28 AM
Replies: 15
Views: 932
Posted By d1mbu1b
I think I get it. The energy is converted to heat...

I think I get it. The energy is converted to heat instead of kinetic energy since the slow piston movement at the bottom of the stroke acts like a brake; the v in E = 1/2mv^2 is limited; so the rest...
Forum: Pontiac - Street 01-29-2009, 10:13 AM
Replies: 15
Views: 932
Posted By d1mbu1b
Thank you everybody for helping me out. Great...

Thank you everybody for helping me out.
Great stuff, everybody mentioned something I was not aware of.
This is a pretty steep learning curve for me.


Thanks for the article. It is very helpful....
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