1976 455 upgrades
March 6th, 2017, 11:10 AM
#41
Registered User
Thread Starter
Join Date: Sep 2012
Location: saratoga springs,n.y
Posts: 1,894
We ended up sliding a 2x2 3/16 piece of square stock into the boom to extend it 10 inches it worked like a charm ! I'm sure the engineers that designed it would be cringing 
March 6th, 2017, 01:27 PM
#42
Out of Line, Everytime😉
Join Date: Dec 2006
Location: Melville, Saskatchewan
Posts: 8,919
Nothing wrong with that I had mine barely in and rachet straps supporting both sides
. I was thinking the same thing or just getting a longer bar made up.
. I was thinking the same thing or just getting a longer bar made up.
Last edited by olds 307 and 403; March 7th, 2017 at 05:14 AM.
March 7th, 2017, 07:43 AM
#45
Registered User
Join Date: Aug 2005
Location: Braceville, Ohio
Posts: 1,972
I also have an extra extended slide in boom for one of my heavier duty engine pickers. I have a set of J heads stacked on the outside of the boom. The top J head has an exhaust manifold still bolted on so it's probably like a 150 pound counter weight, just in case. I have pulled the engine and transmission out of my 1971 Delta with no problems. It's a longer reach than the 1967 98's.
March 7th, 2017, 07:50 AM
#46
Registered User
Thread Starter
Join Date: Sep 2012
Location: saratoga springs,n.y
Posts: 1,894
Now there's a new use for a set of j heads ! Here I thought they were only used for boat anchors and a good idea ,I had to use my big brother as a counter weight just in case
and a good idea ,I had to use my big brother as a counter weight just in case
March 10th, 2017, 02:55 PM
#47
Registered User
Thread Starter
Join Date: Sep 2012
Location: saratoga springs,n.y
Posts: 1,894
today was the day to fire it back up after about a week of wrenching! a little gas in the carb and it did what its supposed to .got it up on high idle and fluctuated it a little for a good 25 minutes .sounded awesome! we set the timing at 20 degrees for now until i can get it out on the road.my original quadra jet with the newly added electric choke worked flawlessly with great response.so far so good with no leaks .will put a few miles on it then change the oil.
May 4th, 2017, 03:28 AM
#48
Registered User
Thread Starter
Join Date: Sep 2012
Location: saratoga springs,n.y
Posts: 1,894
just wanted to update this thread if anyone is watching .everything is now back together ,cam was broken in and have been testing and tuning for a while .have plans to put it on a chasis dyno in the coming weeks .im curious to know what the rwhp is after the upgrades.wish i would have done a before upgrade run ,but should be able to do the math to get close.
May 11th, 2017, 02:38 PM
#50
Registered User
Thread Starter
Join Date: Sep 2012
Location: saratoga springs,n.y
Posts: 1,894
did the dyno test today not exactly what i was hoping for ,but all in all pretty solid.its plain to see why it was faultering when i really laid into it.(which was discussed in a seperate thread of mine)based on these graphs ,any opinions ? my dyno guy said first and foremost change the secondary metering rods in my quadrajet.it is the factory 76 carb with ct rods which are way on the lean side of the scale.and you can see on the graph how it leaned right out around 4000 rpms .i welcome any advice.thanks
May 12th, 2017, 05:15 PM
#51
Registered User
Thread Starter
Join Date: Sep 2012
Location: saratoga springs,n.y
Posts: 1,894
took his advice and found a set of cv secondary metering rods for the quadrajet which are way richer than my ct's and it was an unbelievable difference .then came the rattling noise! ugh!
September 11th, 2018, 04:22 PM
#55
Registered User
Thread Starter
Join Date: Sep 2012
Location: saratoga springs,n.y
Posts: 1,894
randy you could be right but i did check them all and torque to specs. Since that video i pulled the intake and removed the cast iron block off plugs in the heat crossovers it was the second time i had them start to rattle .
September 11th, 2018, 05:06 PM
#56
Out of Line, Everytime😉
Join Date: Dec 2006
Location: Melville, Saskatchewan
Posts: 8,919
Cool, love Olds torque on display. I did get my boom extended on my engine hoist. I didn't have J heads but a pair of 4A 403 heads and Dodge 360 Magnum heads which always crack were needed to counter weight with the motor in the air.
September 11th, 2018, 05:33 PM
#57
Registered User
Join Date: Jun 2009
Location: Palm Bay, FL
Posts: 4,249
If it were me I would remove all of the rockers and bridges and inspect them for wear. If they all look good then you could have a bad lifter.
September 11th, 2018, 05:44 PM
#58
Registered User
Thread Starter
Join Date: Sep 2012
Location: saratoga springs,n.y
Posts: 1,894
I do get a noisy lifter on cold start ups , I’ll be pissed if it is a lifter since the cam and lifters were new . ( maybe 1000 miles on them by now)Perhaps a job to save for the winter months .
September 13th, 2018, 06:19 PM
#59
Registered User
Join Date: Jan 2010
Location: central Indiana
Posts: 5,245
throw those iron block off plugs and use some All Steel 2 part epoxy it comes in a plastic sleeve with the 2 parts separated with a thin sheet of plastic. It’s about the same consistency as play-doh, but sets up hard as steel. Mix up a couple tubes, shove it inside the crossover, problem solved. I tried this the first time on my car back when I still had cast iron heads (probably 20 years ago). When I installed the aluminum heads probably 6 years later the epoxy was still there. Those heads then spent another 8 years on a friends engine until he installed aluminum. The stuff is still there are solid. No rattles, one other than drilling it and cutting it up into small pieces it’s not going anywhere.
Thread
Thread Starter
Forum
Replies
Last Post
19cutlass71supreme
Racing and High Performance
5
February 19th, 2014 07:41 AM
