[GT182]

Originally Posted by 1967Tempest

Don't feel bad, I can gaurentee that every one on this forum has "run out of money" at one point!!!

Amen to that. I run out of money for the GTO by the time every weekend rolls around. Especially this time of year seeing lawns around here are all burnt up.

[242177P]

Originally Posted by steved400

Forgive me but what is "O.P."?

It's the original poster, the guy who started this thread.

[boostmaster]

I did a ton of research on rebuilding the 326 and most everyone told em it wasn't worth it... Then I saw the guys on musclecar tv cobble together a POS lemans (it was a rusty mess) and they kept the 326 but put a bunch of goodies including dual 4bbl's...It seemed to be quite healthy but turned out to be pricey too. So, I opted to go back to stock. The machine shop was thrilled. They said there was only minor wear but it was near perfect so, I just need to wait for it to be finished... Had the ST 300 rebuilt as well and the plan is to run everything stock and maybe swap in a 8.5" posi should the need strike... (we've got one socked away.)

BTW, we're out of money too.


Oh, and I noticed that tri-powered 326... Looks cool.. Wonder if there is any hp/tq benefit if the block is otherwise completely stock. Or do you need some supporting mods... Just curious.

[rohrt]

Originally Posted by boostmaster

I did a ton of research on rebuilding the 326 and most everyone told em it wasn't worth it... Then I saw the guys on musclecar tv cobble together a POS lemans (it was a rusty mess) and they kept the 326 but put a bunch of goodies including dual 4bbl's...It seemed to be quite healthy but turned out to be pricey too. So, I opted to go back to stock. The machine shop was thrilled. They said there was only minor wear but it was near perfect so, I just need to wait for it to be finished... Had the ST 300 rebuilt as well and the plan is to run everything stock and maybe swap in a 8.5" posi should the need strike... (we've got one socked away.)

BTW, we're out of money too.


Oh, and I noticed that tri-powered 326... Looks cool.. Wonder if there is any hp/tq benefit if the block is otherwise completely stock. Or do you need some supporting mods... Just curious.

Sorry I have to ask. Why rebuild the ST 300 instead or just putting a th350?

and do you have a link to the musclecar tv show that showed the 326?

[b-man]

Originally Posted by boostmaster

I did a ton of research on rebuilding the 326 and most everyone told em it wasn't worth it... Then I saw the guys on musclecar tv cobble together a POS lemans (it was a rusty mess) and they kept the 326 but put a bunch of goodies including dual 4bbl's...It seemed to be quite healthy but turned out to be pricey too. So, I opted to go back to stock. The machine shop was thrilled. They said there was only minor wear but it was near perfect so, I just need to wait for it to be finished... Had the ST 300 rebuilt as well and the plan is to run everything stock and maybe swap in a 8.5" posi should the need strike... (we've got one socked away.)

BTW, we're out of money too.


Oh, and I noticed that tri-powered 326... Looks cool.. Wonder if there is any hp/tq benefit if the block is otherwise completely stock. Or do you need some supporting mods... Just curious.

Just have a good dual exhaust installed, the rest is fine if it is all stock 326 parts. You need to free up the exhuast side to let the Tri-Power reap the most benefits.

Even some of the 389 Tri-Power big car engines had the very mild 066 cam (actually the 472, same lobe profile), so any stock replacement cam will work fine too. The 066 is the most commonly used stock replacement cam for stock rebuilds, might be a better choice for a 326 with a 2-speed auto than the 068.

[boostmaster]

rohrt: Rebuilt the st300 because it was original (and cheap to rebuild) and we have too many big parts hogging up space... Just got rid of the engines and trans missions, just have a rear end laying about now... Besides, this is going to be a Sunday cruiser. We have other cars if we want to go fast...

The link: http://www.powerblocktv.com/player/s..._num=MC2007-13

They have several Lemans episodes- (2007) They do a stroker and the do a ton of body work...

B-man: So with the stock 326, the stock single exhaust will not be as good as a dual.. What sort of gains from a dual exhaust? (I assume 2.25" or 2.5" ?) We'd like a nice gurgling sound without the drone.

[b-man]

Originally Posted by boostmaster

rohrt: Rebuilt the st300 because it was original (and cheap to rebuild) and we have too many big parts hogging up space... Just got rid of the engines and trans missions, just have a rear end laying about now... Besides, this is going to be a Sunday cruiser. We have other cars if we want to go fast...

The link: http://www.powerblocktv.com/player/s..._num=MC2007-13

They have several Lemans episodes- (2007) They do a stroker and the do a ton of body work...

B-man: So with the stock 326, the stock single exhaust will not be as good as a dual.. What sort of gains from a dual exhaust? (I assume 2.25" or 2.5" ?) We'd like a nice gurgling sound without the drone.

I would say up to 20 HP could be gained with duals, 2.5'' may be cheaper because kits are more readily available in that size although 2.25" is more than adequate.

[Steve Hoog]

The Tripower will wake up any motor any time without any mods; but with that said, I would advise posi/ good gears and as above mentioned dual exhaust.

[GT182]

2.5" exhaust with Cherry Bomb style mufflers... staggered a bit to cut down on the resonance at cruising speed. It'll sound good but won't be all that loud. I've got CBs on my GTO and most everyone that hears it say they like the sound. And use an X or H pipe too.

[67 LeMans 326]

If we keep our 67 LeMans the next step for ours is will be the 3.23 posi rear and then replace the 2-1/4" dual exhaust w/stock manifolds with 2-1/2" exhaust and H.O. manifolds from R.A.R.E. Then I think the ole 326 with 4bbl, 4-speed, 3.23 posi, 2-1/5" H.O. manifolds & exhaust will sound good and scoot along nicely!

[1967Tempest]

Originally Posted by 67 LeMans 326

If we keep our 67 LeMans the next step for ours is will be the 3.23 posi rear and then replace the 2-1/4" dual exhaust w/stock manifolds with 2-1/2" exhaust and H.O. manifolds from R.A.R.E. Then I think the ole 326 with 4bbl, 4-speed, 3.23 posi, 2-1/5" H.O. manifolds & exhaust will sound good and scoot along nicely!

I would agree!!!!

[Jay Lightning]

sorry i havent been on for a while fellas. been busy with work and have no time for a life let alone my projects... i snapped a few pix of my 326 lemans.

pretty much primered


heres the that i got from a guy in california. thanks to a member from here.


this is the 326 im working with. a little dirty but it turns on


the snall carb it has. 4bbl?


where do these vaccums go to? i cant remember.


also. im in need of a throttle body cable for it. the original one just broke off. time got to it. where can i find one??

[b-man]

Your small carb is a 2-barrel Rochester, they are the original equipment carb on the standard 250 HP 326 engines.

[Jay Lightning]

Originally Posted by b-man

Your small carb is a 2-barrel Rochester, they are the original equipment carb on the standard 250 HP 326 engines.

yeah sorry 2 barrel just saw i put 4 bbl. what throttle cable can i put on it?

[b-man]

Performance Years carries a '66 throttle cable for Tri-Power and 4-barrel setups. I can't see why it wouldn't work for a 2-barrel since the Tri-Power has 3 of them with only the center 2-barrel linked directly to the throttle cable. You could always call them and ask.

RPE406A - 66 GTO Throttle Cable
Price In Stock? Qty in Cart
59.00 Yes
This is the correct length tripower cable but will also work for 4-bbl. Replaces GM #'s 9779930 and 9781587. Use RPE406 for less expensive replacement.

You could also place a 'parts wanted' ad in one of the free classified forums here on PY and find a good used one.

[Jay Lightning]

yeah ill give me a call monday. really seems like i can do some stuff to this tired 326. what i really want done is the body. i still kick my self in the ass for letting that asshole touch the car. but cant do nothing about it anymore but move on. non the less i really wanna finish this car. was also wondering about pulling out the stock fuel tank and installing a fuel cell.


also, what is H.O.?

[1967Tempest]

Originally Posted by Jay Lightning

also, what is H.O.?

High Output.

[GT182]

Originally Posted by boostmaster

I did a ton of research on rebuilding the 326 and most everyone told em it wasn't worth it...

I beg to differ on that. Ask Donny Miles or his dad Don what they think. Don at one time held an NHRA record with a 326. I'd even put one in my GTO if I had too, with a 4bbl. 326s and 327s were basically the same engine and look what they did withthe 327. No reason you can't do the same witha 326. The only reason Pontiac had to call theirs a 326 is because they couldn't say the same number for cubic inches as Chevy had. I've been told this by several 'old timers' years ago... And I believe I've read the same thing somewhere, tho I can't remember where. GM divisons were very territorial on what they had for cubic inch numbers back in the 50s up thru to, and ending in 67.

[Jay Lightning]

Originally Posted by 1967Tempest

High Output.

Appreciate that sir.. I will try and post pix of the progress as it continues. Im very happy to have found this forum. A lot of info I have found.

[Jay Lightning]

Dont really see a 2barrel throttle cable I guess I should just change the Carb also lol. Install a 4bbl and get the throttle cable for it. What y'all think?