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L72 fired up

Posted by Nick <iframe src='https://members5.boardhost.com/impalass427/info/user=427impalasportcoupe' width='330' height='300' border=0 style='border:none;'> on 7/19/2021, 11:44 pm

Gulf super and 1 can of octane booster and open headers to get it running. What a sweet sound to hear it run. I used a 750 Holley to break it in, now I have to install the inner valve springs after a few hours of running. Then I'll put the 780 on and give it a good run. I had to prime the racing fuel pump and tighten all the leaks because of the high pressure. Next to have My Son make the stainless steel exhaust. He used to work for Pypes. NICK L72

427impalasportcoupe

Re: L72 fired up

Posted by TRQ <iframe src='https://members5.boardhost.com/impalass427/info/user=trq427' width='330' height='300' border=0 style='border:none;'> on 7/20/2021, 6:00 am, in reply to "L72 fired up"

That's great Nick!!! So, how long has it been since you heard that engine run?

Re: L72 fired up

Posted by Nick <iframe src='https://members5.boardhost.com/impalass427/info/user=427impalasportcoupe' width='330' height='300' border=0 style='border:none;'> on 7/22/2021, 11:21 pm, in reply to "Re: L72 fired up"

Another set back. The original radiator had a pin hole and the bracket on the left side was loose. All solder up and tomorrow I will pressure check it. Painted it. Trans tomorrow and on to making the exhaust pipes. NICK L72

427impalasportcoupe

Re: L72 fired up

I pulled it after it had 50,000 miles on it. The warranty was unlimited up to then. It dropped 2 valves and had a rering job at 20,000. It used a lot of oil, but did not smoke. Chevrolet said it was normal. It was January 1971 when I installed a worked 450 hp 327 Corvette engine. It went in a modefied stock car leading the race when it overheated. It was stored in a barn near Me, until the guy moved to Florida. Listed on E-bay as a disassembled L72 with My history. Went to Florida to identify it and bring it home to PA. I rebuilt it and used the stock pistons with no gap rings. It sounds great and should not use too much oil this time. My car has a lot of History. NICK L72

427impalasportcoupe

Re: L72 fired up

Posted by TRQ <iframe src='https://members5.boardhost.com/impalass427/info/user=trq427' width='330' height='300' border=0 style='border:none;'> on 7/21/2021, 11:15 pm, in reply to "Re: L72 fired up"

It sure does have a great story behind it, cause you've owned it all this time. So,, do you like the Total Seal rings??

Re: L72 fired up

Time will tell. It better help with the oil consumption. It started right up, and ran smooth, no smoke. I need to break it in. NICK L72

427impalasportcoupe

Re: L72 fired up

L72 with headers and new crossmember. Measuring the hood clearance. NICK L72

427impalasportcoupe

Re: L72 fired up

Posted by TRQ <iframe src='https://members5.boardhost.com/impalass427/info/user=trq427' width='330' height='300' border=0 style='border:none;'> on 7/24/2021, 10:24 pm, in reply to "Re: L72 fired up"

Gonna run the backdrive rods off the shifter so the column will lock as stock?? Will the rod clear the headers?

Re: L72 fired up

You know, I never hooked mine up yet. My 69 Chevelle does. The Hurst should be high enough to clear. If it doesn't, a lever with a higher hole should help. I had to add stop leak to My 2 core radiator after We soldered a hole. Bought a 4 row aluminum, which I will install tomorrow. Trans is next. NICK L72

427impalasportcoupe

Re: L72 fired up

My Son and I just installed My trans. I am using a new crossmember that is cut out for the pipes coming off the headers. It does not have a place for the e-brake links. I will have to make longer links. The 4 row radiator is 24 inches wide while the stock is 28 inches. I have to make side fillers to close up the shroud. NICK L72

427impalasportcoupe

Re: L72 fired up

Driveshaft in, clutch adjusted, hook up e-brake, and put the hood on. Soon I will back it out of the garage. I have My insurance coverage. Mainly My concealed carry in case it breaks down, NOT. NICK L72

427impalasportcoupe

Re: L72 fired up

Backed out of the garage and running. I have to move the console back, second gear shift hitting. All done, reved to 5500 rpm's. I need My Son to help put the hood on and then get out on the road. Washed the car and took pictures. Can't wait to see how it drives with the rear sway bar and heavy duty shocks. NICK L72

427impalasportcoupe

Re: L72 fired up

Posted by steveimpala <iframe src='https://members5.boardhost.com/impalass427/info/user=steveimpala' width='330' height='300' border=0 style='border:none;'> on 8/4/2021, 8:44 pm, in reply to "Re: L72 fired up"

can't wait to see some pictures

Steve

Re: L72 fired up

Put the hood on and took it for a drive. Awesome power with 750 Holley and open headers. The Neighbors gave Us the thumbs up, or We just woke them up. My phone isn't loading the pictures. NICK L72

427impalasportcoupe

Re: L72 fired up

Posted by TRQ <iframe src='https://members5.boardhost.com/impalass427/info/user=trq427' width='330' height='300' border=0 style='border:none;'> on 8/5/2021, 5:51 am, in reply to "Re: L72 fired up"

Bet it was just as memorable as the day you first drove it in 69,,,,,great job Nick

Re: L72 fired up

Even More!!! Comp .562 solid lifter cam with roller rockers and open headers with rear sway bar. 450 hp or better with Electronic ignition and 2 stage holley fuel pump and 100 octane. NICK L72

427impalasportcoupe

Re: L72 fired up

Nick - I just saw the video of your car over on Facebook...... sounds awesome !!

Steve

Re: L72 fired up

Looks great !

Steve

Re: L72 fired up

Thanks. A lot of work and time. I can't wait to hear it with stainless exhaust and Pro Pypes mufflers. My Son worked for Pypes and He will build them. NICK L72

427impalasportcoupe

Re: L72 fired up

Posted by TRQ <iframe src='https://members5.boardhost.com/impalass427/info/user=trq427' width='330' height='300' border=0 style='border:none;'> on 8/9/2021, 6:23 am, in reply to "Re: L72 fired up"

Lookin good Nick. Are those Ansen Sprints? What size are the rears?

Re: L72 fired up

Posted by Nick <iframe src='https://members5.boardhost.com/impalass427/info/user=427impalasportcoupe' width='330' height='300' border=0 style='border:none;'> on 8/10/2021, 12:30 am, in reply to "Re: L72 fired up"

I guess they are Ansens. A friend took them off Her truck years ago. They are 7.5 inches with 235- 60-15 tires on front and I am getting 255-60 15 for the rear. I tried a 9 inch Indy wheel with 275 on, but they were too wide. NICK L72

427impalasportcoupe

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