LT5 Assembly Project - Page 40 - ZR-1 Net Registry Forums

LGAFF · 09-24-2011

I then put the cranksahft sprocket on: Before you put the sprocket on the Oil Pump Seal Seat(pic below) must be put on:
Large shoulder goes towards the back....

The Crankshaft sprocket them must go on....its held in place 1)because the fit is tight as hll and 2) there is a wooddruff key.

May there is a trick to it, but I alligned the wooddruff slot in the sprocket by using the first wood slot in the crank, then backed the sprocket off, put the key out and placed it in the 2nd slot by the Oil Pump Seal Seat.

I then used tool J-38132 to drive the gear on (pictured)

I think heads and timing chain guides are next.

LGAFF · 09-24-2011

In prep for putting the heads on, I had to replace the expansion plugs that were removed.

I went to Lee Auto Parts:

Stock size is 16MM

I used Dorman 555-108 which is .625 inches of 15.89mm

Stock size back of heads; 30.3MM I used Dorman 555-021
The Dorman is 1.199 inches or 30.45mm

Pete mentioned its a good idea to stake these are they tend to leak...staking is striking the opening to create a small lip from the aluminum that keeps the plug in place.

LGAFF · 09-25-2011

Prior to putting the heads on and when assembling the pistons, be sure to check and make sure the rods are are facing the proper direction; the larger chamfer should be facing the bob wieght.

Another easy way to check is to look at the rod number position....with the engine upside down on the stand...all of the odd numbers should be facing the same direction and all of the even numbers should be facing the same direction.

LGAFF · 09-25-2011

Put the heads on..... bolts need to be lubed with engine oil, then torqued in sequence 45 ftlbs 74 ftlbs 118ftlbs.

I numbered the order...the manual has them pictured as they sit so easy to get 6s/9s mixed up, etc

Threw the oil pan/front cover and breather on to cover up the engine......engine bag no longer fits

a1991zr1 · 09-25-2011

i am enjoying your posts and would be interested in the short block for sure

a1991zr1 · 09-26-2011

Does any one have there old plenum and cam cover bolts that they would like to part with. I could put them to great use on a project and I do not like the look of the stainless allen bolts some of you do and I respect that just not my taste, so if you would like to part with these please let me know.

-=Jeff=- · 09-26-2011

I probably have most of them, if not all of them.

I need to check

XfireZ51 · 09-26-2011

Quote:

Originally Posted by a1991zr1

Does any one have there old plenum and cam cover bolts that they would like to part with. I could put them to great use on a project and I do not like the look of the stainless allen bolts some of you do and I respect that just not my taste, so if you would like to part with these please let me know.

I have a complete set from my motor since I replaced them with the SS bolts.

Owosso huh? My wife's family is from Chesaning. Her uncle owned the Heritage House and Bonny Mill Inn. We go up there several times a year.

a1991zr1 · 09-26-2011

small world I use Manage Riverside Pontiac Buick Gmc and My Uncle was Gary Klien mayor of cheasning

LGAFF · 09-26-2011

Should have posted that I am using Jerrys new head gasket, have an OEM set but wanted to see how these work....you also pick up some compression....

09-24-2011	#391
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: LT5 Assembly Project I then put the cranksahft sprocket on: Before you put the sprocket on the Oil Pump Seal Seat(pic below) must be put on: Large shoulder goes towards the back.... The Crankshaft sprocket them must go on....its held in place 1)because the fit is tight as hll and 2) there is a wooddruff key. May there is a trick to it, but I alligned the wooddruff slot in the sprocket by using the first wood slot in the crank, then backed the sprocket off, put the key out and placed it in the 2nd slot by the Oil Pump Seal Seat. I then used tool J-38132 to drive the gear on (pictured) I think heads and timing chain guides are next. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 09-24-2011 at 09:24 PM.

09-24-2011	#392
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: LT5 Assembly Project In prep for putting the heads on, I had to replace the expansion plugs that were removed. I went to Lee Auto Parts: Stock size is 16MM I used Dorman 555-108 which is .625 inches of 15.89mm Stock size back of heads; 30.3MM I used Dorman 555-021 The Dorman is 1.199 inches or 30.45mm Pete mentioned its a good idea to stake these are they tend to leak...staking is striking the opening to create a small lip from the aluminum that keeps the plug in place. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 09-24-2011 at 10:04 PM.

09-25-2011	#393
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: LT5 Assembly Project Prior to putting the heads on and when assembling the pistons, be sure to check and make sure the rods are are facing the proper direction; the larger chamfer should be facing the bob wieght. Another easy way to check is to look at the rod number position....with the engine upside down on the stand...all of the odd numbers should be facing the same direction and all of the even numbers should be facing the same direction. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

09-25-2011	#394
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: LT5 Assembly Project Put the heads on..... bolts need to be lubed with engine oil, then torqued in sequence 45 ftlbs 74 ftlbs 118ftlbs. I numbered the order...the manual has them pictured as they sit so easy to get 6s/9s mixed up, etc Threw the oil pan/front cover and breather on to cover up the engine......engine bag no longer fits __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 09-27-2011 at 09:07 PM.

09-25-2011	#395
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: LT5 Assembly Project i am enjoying your posts and would be interested in the short block for sure

09-26-2011	#396
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: LT5 Assembly Project Does any one have there old plenum and cam cover bolts that they would like to part with. I could put them to great use on a project and I do not like the look of the stainless allen bolts some of you do and I respect that just not my taste, so if you would like to part with these please let me know.

09-26-2011	#397
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,157	Re: LT5 Assembly Project I probably have most of them, if not all of them. I need to check __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978

09-26-2011	#399
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: LT5 Assembly Project small world I use Manage Riverside Pontiac Buick Gmc and My Uncle was Gary Klien mayor of cheasning

09-26-2011	#400
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: LT5 Assembly Project Should have posted that I am using Jerrys new head gasket, have an OEM set but wanted to see how these work....you also pick up some compression.... __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359