Working on the 74..... - Page 7 - ZR-1 Net Registry Forums

Roadster · 05-25-2018

Progress being made.....building the shortblock.....[emoji2] Resized_20180524_160557.jpg Resized_20180524_160548.jpg

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BigJohn · 05-25-2018

Yep, you got to love a BIG BLOCK!

There nothing like driving a big block car.

Mystic ZR-1 · 05-25-2018

Quote:

Originally Posted by BigJohn

Yep, you got to love a BIG BLOCK!

There nothing like driving a big block car.

Big Block... Shmig Block....
Only one cam!
You could get a big block in a dump truck or a school bus!
😋

BigJohn · 05-25-2018

I love Dumptrucks with all that big block torque!
Why do you think I like big diesels.
With three to four times the torque of your ZR-1.

When did you get home?

Roadster · 05-26-2018

Short block complete....Resized_20180525_154854.jpg Resized_20180525_154928.jpg

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S.hafsmo · 05-26-2018

Looks like a very nice project. Assembly is such rewarding work.

BYEBYE2U · 05-26-2018

Nothing like the torque of a BBC...especially with over 500+ CI or power adders ..
They respond immediately
My 12 bolt got destroyed twice

Roadster · 05-27-2018

Quote:

Originally Posted by BigJohn

Yep, you got to love a BIG BLOCK!

There nothing like driving a big block car.

Except maybe a ZR-1......lol

Quote:

Originally Posted by Mystic ZR-1

Big Block... Shmig Block....
Only one cam!
You could get a big block in a dump truck or a school bus!
😋

Quote:

Originally Posted by S.hafsmo

Looks like a very nice project. Assembly is such rewarding work.

thanks....making progress......

Quote:

Originally Posted by BYEBYE2U

Nothing like the torque of a BBC...especially with over 500+ CI or power adders ..
They respond immediately
My 12 bolt got destroyed twice

Nice machine......must be quite a ride down the track!!!

Roadster · 05-27-2018

Picked up the engine today and had a good conversation with one of the machine shop owners who performed mostly all of the work on my engine....... I am extremely happy with their work......here is the breakdown for those who are interested......Crank spect out fine and was polished.....original cam bearing were fine....but we're replaced.....Main and Rod bearings were also replaced and new nuts were used on the Rods.....Oil clearances on the Mains are .0025 on the Rods are .002 Cylinders checked out fine and the original pistons were used with new rings.....Piston to wall clearance is .0025. Cylinders were honed on a boring machine with a 280 grit stones.....Quench measured out to be .060 with a .039 head gasket.....Thurst bearing specs are .003-.009 thurst bearing was set @.006 Cam button uses a .040 washer and Cam clearance is @.010- .015 Cam sprocket should have been the 9- key as opposed to the 3- key I have.....Cam was to be set @106.... but was set @107 and will be @106 with chain stretch...
Closest point is @10* BTDC that is about it....not only excited.....but a big learning experience for me.....[emoji16][emoji16][emoji106]
20180526_103627.jpg 20180526_103706.jpg 20180526_110615.jpg 20180526_115016.jpg 20180526_120822.jpg 20180526_135250.jpg

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BYEBYE2U · 05-27-2018

Try to get 0 play on the cam
Roller cams screw in n out of their bores: distributor gear wear is your 1st hint n choose the right distributor gear for cast or billet cams. Cam degreed with lifter or with head n on spring retainer ?
Cam C/L ? Automatic or Stick ? no bushing on crank:I assume automatic

454-Littlefield 8-71- two 850s- TH400- DANA 4.33s - 3900lbs 9.74@139mph

https://youtu.be/ICZYERXFyMA

05-25-2018	#61
Roadster Join Date: Mar 2014 Location: Warrington PA Posts: 1,913	Re: Working on the 74..... Progress being made.....building the shortblock.....[emoji2] Resized_20180524_160557.jpg Resized_20180524_160548.jpg Sent from my SM-G935P using Tapatalk __________________ Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member

05-25-2018	#62
BigJohn Join Date: Feb 2012 Location: Ledyard,CT Posts: 7,998	Re: Working on the 74..... Yep, you got to love a BIG BLOCK! There nothing like driving a big block car.

05-25-2018	#64
BigJohn Join Date: Feb 2012 Location: Ledyard,CT Posts: 7,998	Re: Working on the 74..... I love Dumptrucks with all that big block torque! Why do you think I like big diesels. With three to four times the torque of your ZR-1. When did you get home?

05-26-2018	#65
Roadster Join Date: Mar 2014 Location: Warrington PA Posts: 1,913	Re: Working on the 74..... Short block complete....Resized_20180525_154854.jpg Resized_20180525_154928.jpg Sent from my SM-G935P using Tapatalk __________________ Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member

05-26-2018	#66
S.hafsmo Join Date: Nov 2016 Location: Norway Posts: 397	Re: Working on the 74..... Looks like a very nice project. Assembly is such rewarding work. __________________ - '90 ZR-1

05-27-2018	#69
Roadster Join Date: Mar 2014 Location: Warrington PA Posts: 1,913	Re: Working on the 74..... Picked up the engine today and had a good conversation with one of the machine shop owners who performed mostly all of the work on my engine....... I am extremely happy with their work......here is the breakdown for those who are interested......Crank spect out fine and was polished.....original cam bearing were fine....but we're replaced.....Main and Rod bearings were also replaced and new nuts were used on the Rods.....Oil clearances on the Mains are .0025 on the Rods are .002 Cylinders checked out fine and the original pistons were used with new rings.....Piston to wall clearance is .0025. Cylinders were honed on a boring machine with a 280 grit stones.....Quench measured out to be .060 with a .039 head gasket.....Thurst bearing specs are .003-.009 thurst bearing was set @.006 Cam button uses a .040 washer and Cam clearance is @.010- .015 Cam sprocket should have been the 9- key as opposed to the 3- key I have.....Cam was to be set @106.... but was set @107 and will be @106 with chain stretch... Closest point is @10* BTDC that is about it....not only excited.....but a big learning experience for me.....[emoji16][emoji16][emoji106] 20180526_103627.jpg 20180526_103706.jpg 20180526_110615.jpg 20180526_115016.jpg 20180526_120822.jpg 20180526_135250.jpg Sent from my SM-G935P using Tapatalk __________________ Tom 1994 ZR-1 #009 "captured test fleet car" 1974 LS4 454 Vert 1982 L83 CFI...now a retired "dd"....Sold WAZOO Member

05-27-2018	#70
BYEBYE2U Join Date: Jan 2015 Location: NYC Posts: 30	Re: Working on the 74..... Try to get 0 play on the cam Roller cams screw in n out of their bores: distributor gear wear is your 1st hint n choose the right distributor gear for cast or billet cams. Cam degreed with lifter or with head n on spring retainer ? Cam C/L ? Automatic or Stick ? no bushing on crank:I assume automatic 454-Littlefield 8-71- two 850s- TH400- DANA 4.33s - 3900lbs 9.74@139mph https://youtu.be/ICZYERXFyMA