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Post Info TOPIC: 1968 Firebird / 72 455 H.O.


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1968 Firebird / 72 455 H.O.


It's been a long haul but today I'm close to the finish line on this car.  The 1972 Pontiac 455 H.O. is now installed with a reproduction Ram Air kit, some Doug's headers, a new exhaust system and chrome split tail pipes.  Still have some body work and paint to do in the future but after 6 years of saving my pennies I'm happy to be able to drive it again.  Pretty much stock rebuild on the round port 455, 7F6 heads, 9.1-1 compression, Crane Powermax hydraulic, part #

283951, grind # H-288-2, Lift - Intake @ cam =305 @ valve 458

Lift - Exhaust @ cam =315 @valve 473  Cam timing - Intake - opens 29 degrees BTDC closes 79 degrees ABDC duration 288 Cam timing - Exhaust - opens 81 degrees BBDC closes 35 degrees ATDC duration 296.  Dyno'd at 388hp & 497 lb/ft but needs some tuning to dial it in.



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1965 Catalina Sport Coupe

1965 Parisienne Custom Sport convertible 327

1968 Firebird /72 455 HO

1977 Grand Prix SJ



A Poncho Legend!

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Congratulations!!!   doesnt it feel great to start it up, and move it.. Good for you!!!!biggrinbiggrinbiggrinbiggrinbiggrin

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A Poncho Legend!

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Looks great. Did you tell us about the Firebird before? I don't remember any details (then again I just turned 40..)


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Looks real nice, a lot of us like white cars on here.

A friend is in the middle of a resto on a 68 as well, 350 4 speed car, red with black vinyl top. Came out of a barn near Keswick. Paid $500 and drove it on the trailer.

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Ray White, Toronto ON

Formerly - The one and only 1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

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That's a fine looking car Jeff, and should be a mighty fine engine to boot!

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



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Carl Stevenson wrote:

That's a fine looking car Jeff, and should be a mighty fine engine to boot!



Thanks Carl.  I like the stock look and I like a good sleeper.  I haven't gone more than half throttle on it yet and it is one scary beast.  furious  The torque just keeps coming on.  I can't wait till spring to take it to Luskville to see what it will do on the track. biggrin



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1965 Catalina Sport Coupe

1965 Parisienne Custom Sport convertible 327

1968 Firebird /72 455 HO

1977 Grand Prix SJ



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427carl wrote:

Congratulations!!!   doesnt it feel great to start it up, and move it.. Good for you!!!!biggrinbiggrinbiggrinbiggrinbiggrin




Thx Carl.  I'd forgotten how much I like this car.  Hadn't driven it in 3 years and had to settle for cruising in the GP while I saved money for the work on the Firebird.  With the new engine it's a completely different car. aww



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1965 Catalina Sport Coupe

1965 Parisienne Custom Sport convertible 327

1968 Firebird /72 455 HO

1977 Grand Prix SJ

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69Laurentian wrote:

Looks great. Did you tell us about the Firebird before? I don't remember any details (then again I just turned 40..)



Not sure, I know I posted pics of the 65 CS and the 77 GP SJ.  The 68 Firebird is a BC car, brought to Ontario in the late 90's.  As the story goes, the original owner in BC kept it garaged.  The car was sold after he passed away and was bought by a man in Alexandria Ontario.  When I bought it he was selling off quite an impressive classic car collection, motorcycles, all-terrain vehicles and I think he was also selling the family farm and home although we didn't discuss that but the real estate for sale signs spoke for themselves.  This was at the time when the dot.com stock bubble burst.  His wife cried as we signed the papers on the car that he was going to restore for her.  It was not a happy day for either of us, in fact I told him that I didn't want to buy the car until he'd had a chance to speak with his wife.  He said she knew it had to be sold along with everything else and that's all there was to it.  I felt badly for a long time after buying it. cry

It's originally a 350 2bbl car with 2 speed auto (now performance built TH350), peg leg rear end with highway gears.  A previous owner installed the 400 hood.  GM documents indicate it was well optioned for a 350 car.  PS, PB, tilt, deluxe interior and steering wheel, shoulder belts & headrests (still options in 68), rear defog, tinted glass all around, Cordova roof, Rallye II's (but I replaced the 14x6 with 15x7).  It's had partial replacement of the rear quarters at some point in it's life and it's had a repaint in enamel but it could use another paint job. 

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1965 Catalina Sport Coupe

1965 Parisienne Custom Sport convertible 327

1968 Firebird /72 455 HO

1977 Grand Prix SJ



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Very nice! thumbsup.gif  No shortage of hp there I bet.  Be sure to post more pics smile

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65 Custom Sport Convertible

Southern Alberta



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1965CS wrote:

Very nice! thumbsup.gif  No shortage of hp there I bet.  Be sure to post more pics smile



Thanks, appreciate the thumbs up!  Yup, good hp, but gobs and gobs of torque.  On the dyno it made 473 lb/ft at 3,100 rpm and peaked at 493 at only 3,600, 388 hp at 4,500 and there's more to be had with some tuning.  Iron heads, relatively mild cam, nice manners at idle, just a bit of a lope, plenty of vacuum & 9.1 to 1 so easily runs pump gas.  I know there are lots of engines out there with aluminum heads or big rumpity rump cams than can easily make more than that but this is plenty for me in this small car.  Here's a few more pics.


-- Edited by apairofponchos at 21:46, 2008-10-04

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1965 Catalina Sport Coupe

1965 Parisienne Custom Sport convertible 327

1968 Firebird /72 455 HO

1977 Grand Prix SJ



Poncho Master!

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Very nice car ! Did the original 350 came with the # 18 HO heads ? Not too many of these around if so. Where did you find the 72 455 HO, they are harder to find than needles in hay stack ! It must be hard to keep the rear wheels from spinning ?

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No, the car was born with a 350 2bbl engine so no #18 heads.  If this had been a 350 H.O. car, I think I would have gone totally stock resto.  The first generation 350 HO Firebirds are indeed a pretty rare find and often underappreciated for their performance.

The 455 HO came from Truman Fields, a nostalgia Pontiac drag racer who has campaigned his 68 Ram Air Firebird "Hard Times" since he bought it new.  Here's a link to some info on him and a pic of his car.  http://www.highperformancepontiac.com/shootout/hppp_0608_pontiac_pavement_pounders_shootout/truman_fields.html

Traction is not as bad as I thought it would be if you ease into it off the line. Traction bars help.   From a rolling start anything more than 1/3 to 1/2 throttle will light them up. Very easy to do smoky burnoutsbiggrin  Drag radials next spring before heading to the track to see what it will do in the quarter mile.

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1965 Catalina Sport Coupe

1965 Parisienne Custom Sport convertible 327

1968 Firebird /72 455 HO

1977 Grand Prix SJ

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Guru

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apairofponchos wrote:
1965CS wrote:

Very nice! thumbsup.gif  No shortage of hp there I bet.  Be sure to post more pics smile



Thanks, appreciate the thumbs up!  Yup, good hp, but gobs and gobs of torque.  On the dyno it made 473 lb/ft at 3,100 rpm and peaked at 493 at only 3,600, 388 hp at 4,500 and there's more to be had with some tuning.  Iron heads, relatively mild cam, nice manners at idle, just a bit of a lope, plenty of vacuum & 9.1 to 1 so easily runs pump gas.  I know there are lots of engines out there with aluminum heads or big rumpity rump cams than can easily make more than that but this is plenty for me in this small car.  Here's a few more pics.


-- Edited by apairofponchos at 21:46, 2008-10-04


 Real nice indeed, hood tach looks good

 



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Poncho Master!

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love your car ! Very nice and a rarity to find one like it !

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