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Forum: Pontiac - Street 05-24-2022, 08:18 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
Tom, I'm thankful for this thread, and the Ford...

Tom, I'm thankful for this thread, and the Ford historical info on the GT40 carbs.
I'm a GT40 fanatic, but I'll never get beyond building the vintage plastic Revell models cuz of the entrance fee....
Forum: Pontiac - Street 05-24-2022, 08:10 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
the problem with Holley carbs, and all carbs in...

the problem with Holley carbs, and all carbs in general, is the fixed metering orifices, and having to disassemble, remove jets, rods, springs to adjust them.
the entire carb should be adjustable...
Forum: Pontiac - Street 05-23-2022, 07:43 PM
Replies: 488
Views: 67,698
Posted By GTO-relic
https://www.youtube.com/watch?v=xNfNE4Xg6cM ...

https://www.youtube.com/watch?v=xNfNE4Xg6cM

this is a damned good recommendation considering this video was made last year,
and that Demon carb is an original BG out of production for 10+ years...
Forum: Pontiac - Street 05-23-2022, 07:58 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
the entire Demon line was basically custom carbs,...

the entire Demon line was basically custom carbs,
calibrated and metered based on CID, cam specs
something Holley only did on a very limited basis.
Forum: Pontiac - Street 05-23-2022, 07:13 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
that's cuz BG had released stuff like this.... ...

that's cuz BG had released stuff like this....
750 baseplate with 2 different venturi sizes,
850 baseplate with 4 different venturi sizes
850 baseplate with 2 different venturis, and annular...
Forum: Pontiac - Street 05-23-2022, 06:49 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
Holley came out with the HP series, to copy...

Holley came out with the HP series,
to copy the BG patented scalloped entry,
billet pieces, etc.
BG's offerings were obviously so superior,
Holley had to upgrade their entire line.
they...
Forum: Pontiac - Street 05-23-2022, 06:06 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
now...what good is that cutting edge Holley flow...

now...what good is that cutting edge Holley flow testing equipment, if the number the carb flows, is not put on the carb itself after flowing it ?
it's a fact, NO ONE even HAD a 28" flow bench in...
Forum: Pontiac - Street 05-23-2022, 06:02 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
in their haste to get 950-1000 cfm versions of...

in their haste to get 950-1000 cfm versions of their own 850 design to market,
Holley was just labeling their carbs with cfm numbers, to match Demons actual latest offerings,
the difference being,...
Forum: Pontiac - Street 05-23-2022, 05:43 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
it's a well known fact, the Holley 950HP, only...

it's a well known fact,
the Holley 950HP, only flows around 790cfm
and the Holley 1000HP, only flows around 900cfm
for some reason Holley's awesome flow equipment,
is not capable of putting an...
Forum: Pontiac - Street 05-22-2022, 07:46 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
you stated that Barry Grant inflated the CFM...

you stated that Barry Grant inflated the CFM numbers. He did not. Actually Holley did, with their 950, that really flowed around 800-830.
so..why didn't that high end flow equipment you used at...
Forum: Pontiac - Street 05-21-2022, 10:17 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
BG did more with less, because he was custom...

BG did more with less, because he was custom tailoring carburetors for each specific engine,
whereas Holley was selling many different SIZES of carbs, in 50cfm step stairs increments, DP and vac....
Forum: Pontiac - Street 05-21-2022, 09:08 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
ps- BG would adjust a carb size downward in cfm,...

ps- BG would adjust a carb size downward in cfm, using booster changes.
the 750 Street Demon had 4 downleg boosters
the 725 Road Demon was same dimensions, with straight boosters on secondaries...
Forum: Pontiac - Street 05-21-2022, 07:49 AM
Replies: 488
Views: 67,698
Posted By GTO-relic
quote: "Barry Grant started that inflated cfm...

quote:
"Barry Grant started that inflated cfm number crap years ago. Well Barry is gone, Holley owns his company and his carbs, and the cow is out of the barn. "

whoever posted this, you need to...
Showing results 1 to 13 of 13

 
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