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Forum: Pontiac - Street 01-22-2024, 09:25 PM
Replies: 76
Views: 3,761
Posted By moontower69
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....
Forum: Pontiac - Street 01-17-2024, 07:16 PM
Replies: 26
Views: 1,538
Posted By moontower69
#47 heads - pics of head surface

Do these look good? Havent cc'd yet.
Forum: Pontiac - Street 01-17-2024, 07:07 PM
Replies: 26
Views: 1,538
Posted By moontower69
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...
Forum: Pontiac - Street 01-14-2024, 07:45 PM
Replies: 26
Views: 1,538
Posted By moontower69
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...
Forum: Pontiac - Street 01-10-2024, 11:58 AM
Replies: 26
Views: 1,538
Posted By moontower69
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...
Forum: Pontiac - Street 01-09-2024, 11:04 AM
Replies: 26
Views: 1,538
Posted By moontower69
I'd be interested in your #17s!

I'd be interested in your #17s!
Forum: Pontiac - Street 01-08-2024, 11:42 PM
Replies: 26
Views: 1,538
Posted By moontower69
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...
Forum: Pontiac - Street 01-08-2024, 11:23 PM
Replies: 26
Views: 1,538
Posted By moontower69
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...
Forum: Pontiac - Street 01-08-2024, 02:39 PM
Replies: 26
Views: 1,538
Posted By moontower69
067 swap

Car is a 1974 Lemans GT...
Forum: Pontiac - Street 01-08-2024, 02:32 PM
Replies: 26
Views: 1,538
Posted By moontower69
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...
Forum: Pontiac - Street 12-22-2021, 02:57 PM
Replies: 20
Views: 3,603
Posted By moontower69
post a link or info on that 2500 400?

would love to see that 400 as I'm in CA
Forum: 73-77 A-body TECH 09-08-2021, 01:18 PM
Replies: 14
Views: 4,043
Posted By moontower69
BFG 255 60R 15 Rally IIs - they dont rub either

This is what I have on my 1974 Lemans GT.
Forum: Pontiac - Street 03-22-2021, 11:43 PM
Replies: 35
Views: 4,641
Posted By moontower69
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...
Forum: Pontiac - Street 03-11-2021, 02:05 AM
Replies: 21
Views: 3,066
Posted By moontower69
3 5 and 7 have issues, look at those deposits

rings worn probably or valves not seating
Forum: 61-77 GTO LeMans & Tempests FOR SALE 02-14-2021, 12:21 PM
Replies: 22
Views: 6,111
Posted By moontower69
Cam & engine specs?

Looks beautiful, what cam?

Also, is it still a 3 speed stick or does it have a 4 speed Muncie now?
Forum: 61-77 GTO LeMans & Tempests FOR SALE 10-17-2020, 12:13 PM
Replies: 3
Views: 2,410
Posted By moontower69
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...
Forum: Pontiac - Street 10-05-2020, 11:32 AM
Replies: 134
Views: 14,541
Posted By moontower69
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...
Forum: Pontiac - Street 10-03-2020, 04:03 PM
Replies: 134
Views: 14,541
Posted By moontower69
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...
Forum: Pontiac - Street 10-01-2020, 11:35 PM
Replies: 8
Views: 1,298
Posted By moontower69
14hg is about right, actually very good

for a 230 duration stump puller type cam, more like 16-18 if it has 068 cam maybe 18-19 with an 067?
Forum: Big Pontiac (incl G-body)Parts For SALE 09-29-2020, 05:45 PM
Replies: 7
Views: 903
Posted By moontower69
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...
Forum: Big Pontiac (incl G-body)Parts For SALE 09-29-2020, 12:03 PM
Replies: 7
Views: 903
Posted By moontower69
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
Forum: THE LOBBY 09-10-2020, 08:42 PM
Replies: 58
Views: 5,022
Posted By moontower69
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...
Forum: THE LOBBY 09-10-2020, 11:49 AM
Replies: 58
Views: 5,022
Posted By moontower69
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.....
Forum: THE LOBBY 09-09-2020, 07:01 PM
Replies: 58
Views: 5,022
Posted By moontower69
great episode T-37

I respect the Roadkill guys (have their stickers on my Poncho daily driver). They seem to hate Pontiac engines though, Freiburger thinks Ponchos are weak and flawed lifter valley design, he's first...
Forum: 73-77 A-body TECH 09-07-2020, 11:40 PM
Replies: 48
Views: 10,268
Posted By moontower69
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