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Forum: Pontiac - Race 04-16-2024, 08:25 AM
Replies: 12
Views: 904
Posted By GTO-relic
yeh the NHRA SuperStock class engine builders...

yeh the NHRA SuperStock class engine builders have been filling exhausts ports with braze for decades. it works.
Forum: Pontiac - Street 03-23-2024, 10:46 PM
Replies: 15
Views: 1,367
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 03-20-2024, 10:35 PM
Replies: 20
Views: 1,096
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: 56
Views: 2,060
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 03-19-2024, 09:04 AM
Replies: 33
Views: 846
Posted By GTO-relic
that feature has been around a while. Qjets had...

that feature has been around a while. Qjets had it on the lid up front in the 1970's but not a high degree of adjustability. the original BG Demon carbs had it in the air filter stud boss, you could...
Forum: Pontiac - Race 03-17-2024, 09:10 AM
Replies: 53
Views: 4,708
Posted By GTO-relic
old thread, compelled to comment: IIRC Ohio...

old thread, compelled to comment:
IIRC Ohio cranks were Chinese cores?
cast cranks and stock blocks at that power level must be magged for cracks regularly.
and discarded when cracks in the...
Forum: Pontiac - Street 09-17-2022, 05:50 AM
Replies: 77
Views: 8,160
Posted By GTO-relic
this put many a 426 Hemi, on the trailer, in...

this put many a 426 Hemi, on the trailer, in NASCAR, for years...
how bad can it be ?
you can't argue with success.

the problem with the internal combustion engine is this,
we get sidetracked...
Forum: Pontiac - Street 06-02-2022, 11:04 AM
Replies: 57
Views: 7,957
Posted By GTO-relic
too bad they stopped making them like this. gas...

too bad they stopped making them like this.
gas crunch hit 1973, drag racing and demand fell off a bit.
they were discontinued.
Carter actually did make a better Qjet IMHO, improved linkage,...
Forum: Pontiac - Street 05-23-2022, 07:43 PM
Replies: 488
Views: 68,506
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 05-22-2022, 07:46 AM
Replies: 488
Views: 68,506
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, 09:08 AM
Replies: 488
Views: 68,506
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...
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