Showing results 1 to 25 of 146
Search took 0.01 seconds.
Search: Posts Made By: GTO-relic
Forum: Performance Parts For Sale/Wanted 03-25-2024, 06:09 PM
Replies: 0
Views: 103
Posted By GTO-relic
RAM AIR V TUNNEL PORT COMP SOLID ROLLER CAM 279/284 dur, .673/.685 lift, 108LSA

COMP CAMS SOLID ROLLER
279/284 duration @ .050"
lift .673/.685 w/1.65 rockers
lift .612/.619 w/1.5 rockers
above figures with valve lash .028"/.030"
108 LSA, 102 ICL, 6 degrees advance ground in...
Forum: LS Talk 03-24-2024, 03:22 PM
Replies: 193
Views: 28,887
Posted By GTO-relic
I'm going to play devil's advocate here, from the...

I'm going to play devil's advocate here, from the practical standpoint,
you went from a 440" Pontiac V8, to an LS with 376" or less, correct ?
raving about mileage from a motor that is 64" or more...
Forum: Pontiac - Street 03-23-2024, 10:46 PM
Replies: 15
Views: 1,248
Posted By GTO-relic
just diggin' around, nobody answered this ? ...

just diggin' around, nobody answered this ?
seriously...
assuming it was a serious question...
hell yes...
1-3/8" = 1-12/32"
so it's 1-23/32" vs 1-12/32" venturi comparison
that is 11/32"...
Forum: Pontiac - Street 03-23-2024, 12:34 AM
Replies: 149
Views: 11,031
Posted By GTO-relic
hey kid, get a sense of humor, lighten up ;):D ...

hey kid, get a sense of humor, lighten up ;):D
we're all kids here. that's what keeps us in this.
Forum: Pontiac - Street 03-23-2024, 12:30 AM
Replies: 8
Views: 254
Posted By GTO-relic
YES fwiw fyi, a Holley DP or 3310 fits on a...

YES
fwiw fyi,
a Holley DP or 3310 fits on a Victor intake,
in my 70 GTO, with an open element air cleaner
Forum: Pontiac - Street 03-21-2024, 04:13 PM
Replies: 33
Views: 685
Posted By GTO-relic
https://www.enginebuildermag.com/2006/11/wet-flow-...

https://www.enginebuildermag.com/2006/11/wet-flow-testing/

Mondello, Morgan
old news but very informative

https://www.youtube.com/watch?v=t9La8gR_k80
...
Forum: Pontiac - Street 03-21-2024, 03:56 PM
Replies: 33
Views: 685
Posted By GTO-relic
All the old BG Demon carb ratings were...

All the old BG Demon carb ratings were established by wet flow testing, with all 4 barrels wide open, at 1.5" Hg./20.4" h2o.
When fluid is introduced into an airflow rig, the test pressure will...
Forum: Pontiac - Street 03-21-2024, 01:18 PM
Replies: 33
Views: 685
Posted By GTO-relic
one of these with 1.75" throttles (Holley 850...

one of these with 1.75" throttles (Holley 850 size), and 1.42" throats, downleg boosters, sculpted inlet, flows 825 cfm.

put annular boosters on it, they're bigger, block airflow. it would...
Forum: Pontiac - Street 03-21-2024, 12:38 PM
Replies: 33
Views: 685
Posted By GTO-relic
now, are we supposed to believe, a 1.39" throat,...

now, are we supposed to believe, a 1.39" throat, with annular boosters, without a sculpted inlet, can flow 850 cfm ?
they obviously don't because everyone is already complaining, losing 2 tenths, 2...
Forum: Pontiac - Street 03-21-2024, 12:34 PM
Replies: 33
Views: 685
Posted By GTO-relic
btw, BG never made a 750 Race Demon with a normal...

btw, BG never made a 750 Race Demon with a normal 1.375" throat.
they were all hopped up to 1.4", 1.42"
he did that for a reason. they were somewhat flow limited.
he had been porting/polishing...
Forum: Pontiac - Street 03-21-2024, 12:31 PM
Replies: 33
Views: 685
Posted By GTO-relic
ok...using that high end, big dollar flow...

ok...using that high end, big dollar flow equipment,
we know these sizes venturis, butterflies wet flow these numbers,
and this was WITH a fully sculpted top inlet, no choke horn.
the Race Demon...
Forum: Pontiac - Street 03-21-2024, 12:11 PM
Replies: 33
Views: 685
Posted By GTO-relic
If Edelbrock makes a "950" carb, which they...

If Edelbrock makes a "950" carb,
which they said is in the works,
that will be in the ballpark for a big block 455-500 engine.
because then it will finally have a throat size,
similar to compete...
Forum: Pontiac - Street 03-21-2024, 12:05 PM
Replies: 33
Views: 685
Posted By GTO-relic
dry flow is what exaggerates cfm numbers on a...

dry flow is what exaggerates cfm numbers on a carburetor.
but even if someone did flow the VRS 850,
at 1.5" HG/20.4" H2O standard,
it's going to flow a lot less than a Holley 850.
Holley got all...
Forum: Pontiac - Street 03-21-2024, 12:02 PM
Replies: 33
Views: 685
Posted By GTO-relic
the smoke and mirrors cfm game was exposed...

the smoke and mirrors cfm game was exposed decades ago.
this has all been documented, hashed out 20-25 years ago.
the buying public is smarter now, which is why that Edelbrock VRS will flop.
no...
Forum: Pontiac - Street 03-21-2024, 11:29 AM
Replies: 33
Views: 685
Posted By GTO-relic
the true cfm would be on a wet flow bench to...

the true cfm would be on a wet flow bench to simulate the fuel being in suspension. and that is very hard to find today, cuz it costs millions to build a bench like that. sure it may flow 850, at...
Forum: Pontiac - Street 03-21-2024, 11:02 AM
Replies: 149
Views: 11,031
Posted By GTO-relic
ps- if you want a fully adjustable PCV, there's a...

ps- if you want a fully adjustable PCV, there's a guy in Pa. sells them, everything is billet aluminum machined on CNC from scratch. I bought the whole setup it works great. Basically you can adjust...
Forum: Pontiac - Street 03-21-2024, 10:52 AM
Replies: 149
Views: 11,031
Posted By GTO-relic
btw fwiw, practically all or most of the top...

btw fwiw, practically all or most of the top running NHRA Super Stock engines, have devcon or a similar epoxy inside the intake ports. they have to, in order to move the port volume around and stay...
Forum: Pontiac - Street 03-21-2024, 10:46 AM
Replies: 8
Views: 369
Posted By GTO-relic
I bought a reman/return Brawler direct from...

I bought a reman/return Brawler direct from Holley. 750cfm
just another take on an old 4779 DP, with a facelift, IMHO.
never used it. sold to a friend at cost, he put it on a 6.0 LS in a truck,
it...
Forum: Pontiac - Street 03-21-2024, 07:44 AM
Replies: 33
Views: 685
Posted By GTO-relic
old Holley 750- 1.375" venturi old BG Demon...

old Holley 750- 1.375" venturi

old BG Demon 750- 1.4" venturi

new Edelbrock VRS 850- 1.39" venturi

look on the bright side,
if you want a nice, brand spankin' new 750 carb,
just buy an...
Forum: Pontiac - Street 03-20-2024, 10:35 PM
Replies: 19
Views: 765
Posted By GTO-relic
this is one good thread actually....I had a tach...

this is one good thread actually....I had a tach jumping problem, and starting/tuning problem. it would come and go. finally after many months, the battery died. I had been checking the charge...
Forum: Pontiac - Street 03-20-2024, 10:30 PM
Replies: 43
Views: 1,141
Posted By GTO-relic
there's quite a few guys who made that much HP...

there's quite a few guys who made that much HP with a Pontiac in the past 45 years....you can make 675-700 on the stock block, with a 3" main, and a cast 455 4.21" stroke crank, with those heads. ...
Forum: Pontiac - Street 03-20-2024, 10:19 PM
Replies: 149
Views: 11,031
Posted By GTO-relic
https://forums.maxperformanceinc.com/forums/attach...

https://forums.maxperformanceinc.com/forums/attachment.php?attachmentid=630749&d=1710987577

OK kid here ya go,
if Mondello can break through,
you can break through,
it's standard procedure...
Forum: Pontiac - Street 03-20-2024, 10:02 PM
Replies: 149
Views: 11,031
Posted By GTO-relic
hey I want to tell this fella something, Joe...

hey I want to tell this fella something,
Joe Mondello used to port aluminum E-heads for Olds into the head bolt holes,
he's insert a sleeve just like a Pontiac pushrod sleeve,
you could see it...
Forum: Pontiac - Street 03-20-2024, 09:41 PM
Replies: 33
Views: 685
Posted By GTO-relic
click link, scoll down to read specs. ...

click link, scoll down to read specs.

Edelbrock 850
https://www.edelbrock.com/vrs-4150-carburetor-850-cfm-1308.html

Edelbrock 750...
Forum: Pontiac - Street 03-20-2024, 09:14 PM
Replies: 33
Views: 685
Posted By GTO-relic
found the cause of all this- the Edelbrock...

found the cause of all this-
the Edelbrock carbs all use the correct size baseplates,
but they use smaller venturi sizes than what Holley uses.

Edelbrock 850- 1.39" venturi
Holley 850- 1.56"...
Showing results 1 to 25 of 146

 
Forum Jump

All times are GMT -4. The time now is 07:06 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017