About to rebuild my l48 any advice?
#1
About to rebuild my l48 any advice?
I've just bought all the tool required for a rebuild and I plan to bore the engine and get the deck all done up. I'm new to this and would like to know is there anything specific that I might have problems doing while taking the engine apart? Would like some advice from some of you guy's who've done it.
#2
Team Owner
Member Since: Oct 2004
Location: altered state
Posts: 81,242
Received 3,043 Likes
on
2,602 Posts
St. Jude Donor '05
Cut a couple pieces of rubber line a few in long to slip over the rod bolts so you dont score the cyl when they come out
Pay attnetion to the chamfer on the rods, which way they face and number so you dont forget on putting it back together.
pics
Pay attnetion to the chamfer on the rods, which way they face and number so you dont forget on putting it back together.
pics
#3
Burning Brakes
Member Since: Feb 2011
Location: Woodland California
Posts: 849
Likes: 0
Received 0 Likes
on
0 Posts
I've just bought all the tool required for a rebuild and I plan to bore the engine and get the deck all done up. I'm new to this and would like to know is there anything specific that I might have problems doing while taking the engine apart? Would like some advice from some of you guy's who've done it.
Unless your going to build a 383 it's probably not needed.
I pulled down my 1975 and there was just a touch of lip in a couple cylinders. 90,000 miles.
Suggest:
Upgrade the heads, re-ring and bearing the motor and choose a nice cam and a high pressure spring for a stock oil pump.
So after all that, what do you expect out of the motor?
How are you going to drive it?
How long you going to keep it?
What's your gear ratio?
What transmission?
Ralph
#4
Thanks for the reply i have seen that trick i actually downloaded a dvd from boxwrench that is very informative but not engine specific. Are there any engine specific thing's i need to worry about while pulling the engine? And I have access to a "bath" on my military base would you all save the money and just do it and all the pieces yourself or would it be better for them to do it. ALso am i able to rent a camshaft bearing installer from like autozone or will the machine shop do it or will i need to buy the kit?
#5
Team Owner
Member Since: Oct 2004
Location: altered state
Posts: 81,242
Received 3,043 Likes
on
2,602 Posts
St. Jude Donor '05
Machinist will probably be cleaning it more than once. WOuldnt hurt to get the large crust off before giving it to him
#6
Why all the bore and deck stuff?
Unless your going to build a 383 it's probably not needed.
I pulled down my 1975 and there was just a touch of lip in a couple cylinders. 90,000 miles.
Suggest:
Upgrade the heads, re-ring and bearing the motor and choose a nice cam and a high pressure spring for a stock oil pump.
So after all that, what do you expect out of the motor?
How are you going to drive it?
How long you going to keep it?
What's your gear ratio?
What transmission?
Ralph
Unless your going to build a 383 it's probably not needed.
I pulled down my 1975 and there was just a touch of lip in a couple cylinders. 90,000 miles.
Suggest:
Upgrade the heads, re-ring and bearing the motor and choose a nice cam and a high pressure spring for a stock oil pump.
So after all that, what do you expect out of the motor?
How are you going to drive it?
How long you going to keep it?
What's your gear ratio?
What transmission?
Ralph
I want to keep the car for my baby boy to have some day i'm 23
my gear ratio right now is whatever came stock for the car.
I have the th350 automatic right now.
I would like to improve the engine to a solid 325-350 hourses would be ideal.
Here is a kit i'm looking at buying...
I either want to turn it to a 383 or buy this kit... and idk if i can get the power i want if i turn it to a 383 i mean i heard it's just a torque gain across the rpm curve. Uhm suggestions for me?
http://www.summitracing.com/users/wi...1-dc472546256c
#10
Burning Brakes
Member Since: Feb 2011
Location: Woodland California
Posts: 849
Likes: 0
Received 0 Likes
on
0 Posts
I'd skip the roller rockers.
Go with a set of roller tipped rockers, they last much longer.
As a serviceman I know money has to be tight, unless things have changed.
I went this way;
http://www.summitracing.com/parts/SUM-G2600/?rtype=10
http://www.summitracing.com/parts/SUM-172000/
http://www.summitracing.com/parts/SUM-171000/
http://www.summitracing.com/parts/SUM-133-139-00/
http://www.summitracing.com/parts/EDL-2101/
http://www.summitracing.com/parts/SUM-G9003/
There are about $300.00 in parts here including a set of headers.
I know I cut my ring gap in half and the motor runs real strong.
I did buy a Lunati cam and lifter set, Edelbrock manifold too.
The engine will go at least 50,000 miles.
When the kid gets old enough do it as a project with them.
They will appreciate it more and respect the car more.
It seems if people don't earn it they wont take care of it.
I know I sound like a stick in the mud.
To make it a hot rod you will need to change the rear end and then you loose the cruse ability of the car, then you will need a 4 speed automatic to help with that. It almost never ends.
Refresh the engine, a good after market cam and drive the wheels off of it. You will be money ahead.
Just my 2 cents worth
Ralph
Keep it simple
Go with a set of roller tipped rockers, they last much longer.
As a serviceman I know money has to be tight, unless things have changed.
I went this way;
http://www.summitracing.com/parts/SUM-G2600/?rtype=10
http://www.summitracing.com/parts/SUM-172000/
http://www.summitracing.com/parts/SUM-171000/
http://www.summitracing.com/parts/SUM-133-139-00/
http://www.summitracing.com/parts/EDL-2101/
http://www.summitracing.com/parts/SUM-G9003/
There are about $300.00 in parts here including a set of headers.
I know I cut my ring gap in half and the motor runs real strong.
I did buy a Lunati cam and lifter set, Edelbrock manifold too.
The engine will go at least 50,000 miles.
When the kid gets old enough do it as a project with them.
They will appreciate it more and respect the car more.
It seems if people don't earn it they wont take care of it.
I know I sound like a stick in the mud.
To make it a hot rod you will need to change the rear end and then you loose the cruse ability of the car, then you will need a 4 speed automatic to help with that. It almost never ends.
Refresh the engine, a good after market cam and drive the wheels off of it. You will be money ahead.
Just my 2 cents worth
Ralph
Keep it simple
#11
Le Mans Master
Member Since: Sep 2001
Location: Unreconstructed, South Carolina
Posts: 7,739
Received 628 Likes
on
556 Posts
Through the all-toooo-many threads running on this particular car ... I gather the OP is a very young adult, in military and hoping for baby boy. I also understand the OP is new to engine overhaul and, at present, this car runs OK.
In all honesty, and with good will, my best advice to OP is to delay or abandon any project having scope of a vette rebuild / restoration; put the rest of the dough in a 1 yr CD.
In all honesty, and with good will, my best advice to OP is to delay or abandon any project having scope of a vette rebuild / restoration; put the rest of the dough in a 1 yr CD.
#12
Through the all-toooo-many threads running on this particular car ... I gather the OP is a very young adult, in military and hoping for baby boy. I also understand the OP is new to engine overhaul and, at present, this car runs OK.
In all honesty, and with good will, my best advice to OP is to delay or abandon any project having scope of a vette rebuild / restoration; put the rest of the dough in a 1 yr CD.
In all honesty, and with good will, my best advice to OP is to delay or abandon any project having scope of a vette rebuild / restoration; put the rest of the dough in a 1 yr CD.
#13
I'd skip the roller rockers.
Go with a set of roller tipped rockers, they last much longer.
As a serviceman I know money has to be tight, unless things have changed.
I went this way;
http://www.summitracing.com/parts/SUM-G2600/?rtype=10
http://www.summitracing.com/parts/SUM-172000/
http://www.summitracing.com/parts/SUM-171000/
http://www.summitracing.com/parts/SUM-133-139-00/
http://www.summitracing.com/parts/EDL-2101/
http://www.summitracing.com/parts/SUM-G9003/
There are about $300.00 in parts here including a set of headers.
I know I cut my ring gap in half and the motor runs real strong.
I did buy a Lunati cam and lifter set, Edelbrock manifold too.
The engine will go at least 50,000 miles.
When the kid gets old enough do it as a project with them.
They will appreciate it more and respect the car more.
It seems if people don't earn it they wont take care of it.
I know I sound like a stick in the mud.
To make it a hot rod you will need to change the rear end and then you loose the cruse ability of the car, then you will need a 4 speed automatic to help with that. It almost never ends.
Refresh the engine, a good after market cam and drive the wheels off of it. You will be money ahead.
Just my 2 cents worth
Ralph
Keep it simple
Go with a set of roller tipped rockers, they last much longer.
As a serviceman I know money has to be tight, unless things have changed.
I went this way;
http://www.summitracing.com/parts/SUM-G2600/?rtype=10
http://www.summitracing.com/parts/SUM-172000/
http://www.summitracing.com/parts/SUM-171000/
http://www.summitracing.com/parts/SUM-133-139-00/
http://www.summitracing.com/parts/EDL-2101/
http://www.summitracing.com/parts/SUM-G9003/
There are about $300.00 in parts here including a set of headers.
I know I cut my ring gap in half and the motor runs real strong.
I did buy a Lunati cam and lifter set, Edelbrock manifold too.
The engine will go at least 50,000 miles.
When the kid gets old enough do it as a project with them.
They will appreciate it more and respect the car more.
It seems if people don't earn it they wont take care of it.
I know I sound like a stick in the mud.
To make it a hot rod you will need to change the rear end and then you loose the cruse ability of the car, then you will need a 4 speed automatic to help with that. It almost never ends.
Refresh the engine, a good after market cam and drive the wheels off of it. You will be money ahead.
Just my 2 cents worth
Ralph
Keep it simple
#14
Already a rebuilt block int here from previous owner so it doesn't really matter the block itself only has 500 miles on it it's just been sitting and one of the valve seals was leaking oil all over the engine and they were stil turning it over and it made a pretty significant mess.
#15
I'd skip the roller rockers.
Go with a set of roller tipped rockers, they last much longer.
As a serviceman I know money has to be tight, unless things have changed.
I went this way;
http://www.summitracing.com/parts/SUM-G2600/?rtype=10
http://www.summitracing.com/parts/SUM-172000/
http://www.summitracing.com/parts/SUM-171000/
http://www.summitracing.com/parts/SUM-133-139-00/
http://www.summitracing.com/parts/EDL-2101/
http://www.summitracing.com/parts/SUM-G9003/
There are about $300.00 in parts here including a set of headers.
I know I cut my ring gap in half and the motor runs real strong.
I did buy a Lunati cam and lifter set, Edelbrock manifold too.
The engine will go at least 50,000 miles.
When the kid gets old enough do it as a project with them.
They will appreciate it more and respect the car more.
It seems if people don't earn it they wont take care of it.
I know I sound like a stick in the mud.
To make it a hot rod you will need to change the rear end and then you loose the cruse ability of the car, then you will need a 4 speed automatic to help with that. It almost never ends.
Refresh the engine, a good after market cam and drive the wheels off of it. You will be money ahead.
Just my 2 cents worth
Ralph
Keep it simple
Go with a set of roller tipped rockers, they last much longer.
As a serviceman I know money has to be tight, unless things have changed.
I went this way;
http://www.summitracing.com/parts/SUM-G2600/?rtype=10
http://www.summitracing.com/parts/SUM-172000/
http://www.summitracing.com/parts/SUM-171000/
http://www.summitracing.com/parts/SUM-133-139-00/
http://www.summitracing.com/parts/EDL-2101/
http://www.summitracing.com/parts/SUM-G9003/
There are about $300.00 in parts here including a set of headers.
I know I cut my ring gap in half and the motor runs real strong.
I did buy a Lunati cam and lifter set, Edelbrock manifold too.
The engine will go at least 50,000 miles.
When the kid gets old enough do it as a project with them.
They will appreciate it more and respect the car more.
It seems if people don't earn it they wont take care of it.
I know I sound like a stick in the mud.
To make it a hot rod you will need to change the rear end and then you loose the cruse ability of the car, then you will need a 4 speed automatic to help with that. It almost never ends.
Refresh the engine, a good after market cam and drive the wheels off of it. You will be money ahead.
Just my 2 cents worth
Ralph
Keep it simple
#17
Le Mans Master
Member Since: Mar 2008
Location: Oxford MA-----You just lost the game!!!!
Posts: 5,948
Likes: 0
Received 63 Likes
on
53 Posts
I've only built two engines in my life, so I'm no expert, but it's all relative, right? Here are two things that I think can't be stressed enough:
Organization and cleanliness.
Keep everything organized. keep track of which lifter goes with which cam lobe, which pushrod goes with which lifter, which rocker arm goes with which pushrod, etc. If you re-use these parts, this will be crucial. If not, someone else may want to use them someday, so keep them organized. Dress right.....dress!
Clean, clean, clean! Like, surgically clean. Ya know how clean the armorer wants your rifle? Even cleaner than that. I would go ahead and get some CLP from the armorer, and use that. I don't think it will hurt anything, and it will be fun to tell your buddies about how you used CLP to clean your engine parts during the rebuild process. Clean it real good before you send it to the machine shop. Clean it real good when it comes back from the machine shop. Put it on an engine stand and clean it with dishwashing detergent and water from the garden hose, using "bottle brushes" to get in the oil passages and stuff. Then clean it with CLP. Then soap and water. Then again with the CLP. Use compressed air to blow it all out. OK, I'm starting to ramble, so I'm outa here, see ya,
Scott
Organization and cleanliness.
Keep everything organized. keep track of which lifter goes with which cam lobe, which pushrod goes with which lifter, which rocker arm goes with which pushrod, etc. If you re-use these parts, this will be crucial. If not, someone else may want to use them someday, so keep them organized. Dress right.....dress!
Clean, clean, clean! Like, surgically clean. Ya know how clean the armorer wants your rifle? Even cleaner than that. I would go ahead and get some CLP from the armorer, and use that. I don't think it will hurt anything, and it will be fun to tell your buddies about how you used CLP to clean your engine parts during the rebuild process. Clean it real good before you send it to the machine shop. Clean it real good when it comes back from the machine shop. Put it on an engine stand and clean it with dishwashing detergent and water from the garden hose, using "bottle brushes" to get in the oil passages and stuff. Then clean it with CLP. Then soap and water. Then again with the CLP. Use compressed air to blow it all out. OK, I'm starting to ramble, so I'm outa here, see ya,
Scott
#18
I would but from sitting theres a tid bit of rust on the radiator fan and the sludge from oil burning on it and idk i just feel like it'd at least be good to take out and change out the seals and gaskets that are probably eroded and what not. it looks like junnk in there right now to i just want to clean it up and switch out some hoses and give it some power
#19
I've only built two engines in my life, so I'm no expert, but it's all relative, right? Here are two things that I think can't be stressed enough:
Organization and cleanliness.
Keep everything organized. keep track of which lifter goes with which cam lobe, which pushrod goes with which lifter, which rocker arm goes with which pushrod, etc. If you re-use these parts, this will be crucial. If not, someone else may want to use them someday, so keep them organized. Dress right.....dress!
Clean, clean, clean! Like, surgically clean. Ya know how clean the armorer wants your rifle? Even cleaner than that. I would go ahead and get some CLP from the armorer, and use that. I don't think it will hurt anything, and it will be fun to tell your buddies about how you used CLP to clean your engine parts during the rebuild process. Clean it real good before you send it to the machine shop. Clean it real good when it comes back from the machine shop. Put it on an engine stand and clean it with dishwashing detergent and water from the garden hose, using "bottle brushes" to get in the oil passages and stuff. Then clean it with CLP. Then soap and water. Then again with the CLP. Use compressed air to blow it all out. OK, I'm starting to ramble, so I'm outa here, see ya,
Scott
Organization and cleanliness.
Keep everything organized. keep track of which lifter goes with which cam lobe, which pushrod goes with which lifter, which rocker arm goes with which pushrod, etc. If you re-use these parts, this will be crucial. If not, someone else may want to use them someday, so keep them organized. Dress right.....dress!
Clean, clean, clean! Like, surgically clean. Ya know how clean the armorer wants your rifle? Even cleaner than that. I would go ahead and get some CLP from the armorer, and use that. I don't think it will hurt anything, and it will be fun to tell your buddies about how you used CLP to clean your engine parts during the rebuild process. Clean it real good before you send it to the machine shop. Clean it real good when it comes back from the machine shop. Put it on an engine stand and clean it with dishwashing detergent and water from the garden hose, using "bottle brushes" to get in the oil passages and stuff. Then clean it with CLP. Then soap and water. Then again with the CLP. Use compressed air to blow it all out. OK, I'm starting to ramble, so I'm outa here, see ya,
Scott