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It runs! 455 olds vids and pic
Posted: Sun May 14, 2006 8:18 am
by ws6
Finished up the fuel system and started the 455 today to break in the cam. The engine is fully rebuilt, with a mild 220/230 cam,performer intake,1000cfm throttle body, headers/dual 2.5 magnaflow exhaust, and megasquirt. The car starts, idles, and revs beautifully. Once the air ride is completed I'll finish tuning it on the road...
here is some more pics...
http://www.genmay.com/showthread.php?t=639669
There is a big issue in the first movie that was immediatly corrected, first one to spot it wins a e-cookie ;)
Start up and rev
http://www.youtube.com/watch?v=wVzQU81F6wI
Exhaust and spinners..lol
http://www.youtube.com/watch?v=Mkj8BUBV7c4
Posted: Sun May 14, 2006 3:48 pm
by bluetrepidation
Nice rims.
Re: It runs! 455 olds vids and pic
Posted: Sun May 14, 2006 4:07 pm
by Uncle Bob
ws6 wrote:
There is a big issue in the first movie that was immediatly corrected, first one to spot it wins a e-cookie ;)
well its obvious, the dummie behind the wheel never actually rev'd it over 2K RPM's. How annoying.
Lets hear that puppy sing!
Re: It runs! 455 olds vids and pic
Posted: Sun May 14, 2006 9:14 pm
by ChevelleFan
Uncle Bob wrote:ws6 wrote:
There is a big issue in the first movie that was immediatly corrected, first one to spot it wins a e-cookie ;)
well its obvious, the dummie behind the wheel never actually rev'd it over 2K RPM's. How annoying.
Lets hear that puppy sing!
Haha -- I agree!
Posted: Sun May 14, 2006 9:18 pm
by MSBoostedEscort
that thing should spin at least 8k
Posted: Sun May 14, 2006 9:58 pm
by krisr
MSBoostedEscort wrote:that thing should spin at least 8k
Haha, only if you want to collect the rods & pieces of what used to be the crank in the pan.
From memory the olds 455 are pretty much the same as the Pontiac 455's. They are game over by about 5500rpm due to the stroke and rotating assembly weight, but god damn they'll pull put some tree stumps getting there!
Posted: Sun May 14, 2006 10:02 pm
by Uncle Bob
getting "slightly" off topic....but a friend of mine has a 455 in his 72 grand prix that has been bored and stroked to a 468 (if I remember right) with a 250 shot on top of it. He spins it to 6500 RPM's....very daring IMO. But it is seriuosly built engine too.
But man does that thing sound wicked. 4000 pound car running low tens....when its running anyway
Posted: Mon May 15, 2006 4:23 pm
by MSBoostedEscort
it all depends on how it built.
we have a project 68 buick riviera with a 455 and ti has no problems turning 8k whild doing a nice harsh torturous burnout. our goal was to explode it so we coudl go thru the motor, its completly stock and has never been touched. given we had to put a 850 holley on it to spin that high, but it does it until the points come apart
Posted: Mon May 15, 2006 5:28 pm
by Uncle Bob
455 has a 4.21 stroke (stock) which comes out to 5600 fpm average piston speed at 8000RPMs. Now I won't say its not feasible for a motor to survive that....for a little while, its really really close to InstantBoom land.
Posted: Mon May 15, 2006 5:48 pm
by krisr
Don't forget your inlet ports would have to be the size of tennis balls or have a hoover vacuum cleaner somewhere in the combustion chamber to even warrant those sort of revs
Oh, and a cam that's open 361° @ 0.050
RIGHTO, enough smarty comments from me... Back to the topic, good job on the 455 !!