Forum: Pontiac - Street
06-09-2024, 06:55 PM
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Replies: 10
Views: 687
valve lash
Just had the same problem on a rebuild and new cam. If the pushrods are not spinning then you might have overtightened the nuts. Is it stock nuts or assume poly locks w/ that bigger Ultradyne cam? ...
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Forum: Pontiac - Street
06-09-2024, 04:52 PM
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Replies: 25
Views: 845
x2 on lack of vacuum advance making a 389 run...
x2 on lack of vacuum advance making a 389 run hot. Even w vacuum canister dialed in, also recommend running manifold and NOT ported vacuum advance, that will make it run hot as well because you wont...
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Forum: Pontiac - Street
01-22-2024, 09:25 PM
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Replies: 76
Views: 4,951
Crower springs ok for 068?
Are CROWER 68404 springs good for a stock rebuild with 068 or 067?
Wanna avoid risk of failure and like you said Bman, most driving will be between 1000 and 3000 RPMs....
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Forum: Pontiac - Street
01-17-2024, 07:16 PM
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Replies: 26
Views: 1,984
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Forum: Pontiac - Street
01-17-2024, 07:07 PM
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Replies: 26
Views: 1,984
Got #47 heads
Ok, picked up heads and they are #47 and not #17. Do I still need an exhaust crossover BLOCKOFF plate with the #47 since I was running 4X heads before?
will post pics.
Heads just need...
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Forum: Pontiac - Street
01-14-2024, 07:45 PM
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Replies: 26
Views: 1,984
350 performance inquiry - valve spring theory?
I hear you 77Trashcan on why performance so weak. I'm not a newbie and tuned this car to perfection over the years (put 100k on it over 13 years as daily diver) and since day 1 it noses over at...
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Forum: Pontiac - Street
01-10-2024, 11:58 AM
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Replies: 26
Views: 1,984
Going w 067 and #17 heads
I got a pair of #17 small valve heads ready to install (and gone over) off Craiglist and am going with a Cometic .27 thickness head gasket (since the heads are I think only about 84 cc's).
Should...
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Forum: Pontiac - Street
01-09-2024, 11:04 AM
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Replies: 26
Views: 1,984
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Forum: Pontiac - Street
01-08-2024, 11:42 PM
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Replies: 26
Views: 1,984
Looking at a set of #17 cores on Ebay w small...
Looking at a set of #17 cores on Ebay w small valves, gets this 350 to about 9.3 w 75cc by my calculations, will that work well with my Butler grind 067? I def dont want to go full 068, this has a...
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Forum: Pontiac - Street
01-08-2024, 11:23 PM
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Replies: 26
Views: 1,984
Ok, thanks for the advice. I think swapping...
Ok, thanks for the advice. I think swapping heads now as well is in order! Thinking since the rest of the motor is in great shape (no blow by and doesnt burn oil and great oil PSI of 60 at cold...
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Forum: Pontiac - Street
01-08-2024, 02:39 PM
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Replies: 26
Views: 1,984
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Forum: Pontiac - Street
01-08-2024, 02:32 PM
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Replies: 26
Views: 1,984
Swapping out #537441 for Butler 067
Previous owner rebuilt the 350 30 over with 4X small vale 96 heads - but can't for life of me understand WHY they put this peanut cam #537441 grind in it....had decent torque off idle but nosed over...
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Forum: Pontiac - Street
12-22-2021, 02:57 PM
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Replies: 20
Views: 3,738
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Forum: 73-77 A-body TECH
09-08-2021, 01:18 PM
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Replies: 14
Views: 4,275
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Forum: Pontiac - Street
03-22-2021, 11:43 PM
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Replies: 35
Views: 5,119
stock or 2000 stall vote
I hate to be the contrarian, but i've had that SAME situation and i sort of hated the 2500 stall with that kind of a 400 with 8.5 compression and 067/068 type cam specs.
I do a lot of street...
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Forum: Pontiac - Street
03-11-2021, 02:05 AM
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Replies: 21
Views: 3,262
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Forum: 61-77 GTO LeMans & Tempests FOR SALE
02-14-2021, 12:21 PM
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Replies: 22
Views: 6,285
Cam & engine specs?
Looks beautiful, what cam?
Also, is it still a 3 speed stick or does it have a 4 speed Muncie now?
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Forum: 61-77 GTO LeMans & Tempests FOR SALE
10-17-2020, 12:13 PM
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Replies: 3
Views: 2,516
75 Lemans GT w 40k miles
Not mine but wow, only 40k original miles, pristine car for 15k. ORginial spare and dash is just off the showroom floor, not restored.
Pretty sure it's not a real GT since its column shift auto...
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Forum: Pontiac - Street
10-05-2020, 11:32 AM
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Replies: 134
Views: 15,510
Extra power v drone
I'll give up a tiny bit of power to eliminate risk of drone every time!! Any "straight through" style like Borla or Ultraflow versus a "turbo" chambered muffler like Dynomax Super Turbos risks...
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Forum: Pontiac - Street
10-03-2020, 04:03 PM
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Replies: 134
Views: 15,510
Headers & drone
Simple answer: YES Headers contribute to overall noise and drone. Hard to say exactly in what percentages based on other factors like pipe diameter and mufflers and placement and install and X or H...
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Forum: Pontiac - Street
10-01-2020, 11:35 PM
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Replies: 8
Views: 1,412
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Forum: Big Pontiac (incl G-body)Parts For SALE
09-29-2020, 05:45 PM
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Replies: 7
Views: 952
I think its a clone too
And that "original paint" statement is just fraudulent.
I knew I could count on this site to know whats what. It's still a pretty decent looking car but not worth 25k type money....would love...
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Forum: Big Pontiac (incl G-body)Parts For SALE
09-29-2020, 12:03 PM
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Replies: 7
Views: 952
Cleanest 1975 GP?
Is this the cleanest GP we've seen?
I can't believe that's the ORGINAL Bimini Blue paint or is it?
https://www.ebay.com/itm/293745661543
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Forum: THE LOBBY
09-10-2020, 08:42 PM
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Replies: 58
Views: 5,145
304
Yeah, I didn't say it CAME with a Qjet, I swapped out the Holley from PO (who ditched the crappy factory Motorcraft I think), used spreadbore adapter. It was 304 w Qjet 3 speed manual, loved that...
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Forum: THE LOBBY
09-10-2020, 11:49 AM
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Replies: 58
Views: 5,145
Qjets are underrated
I agree.
I run a Qjet on my Poncho daily driver and I had a Qjet on my 1978 CJ-7 jeep in college, that thing would run almost upside down 4 wheeling.....
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