removing engine from 79 trans am
#1
removing engine from 79 trans am
Not sure if this is the right place for this question, but I have a 79 trans am with 301 nonturbo and th350. I am building a motor to swap out the 301 with and have never pulled a motor before. Right now it looks like some of the bolts would be very difficult to get to so that I could disconnect the motor from the tranny. Is it easier to just pull both out together? Any advice on either way be greatly appreciated.
Thanks
Thanks
#3
The car needs to be jacked as high as you can get it on jack stands. All the bolts are accessible by either from the top or under the engine with common hand tools. A long extension and a swivel comes in handy. I personally, like to pull and install the engine and trans at the same time.
#5
I don't know about the overall height but suggest that if you plan on removing the engine and transmission together, unbolt the three converter bolts while the assembly is still in the car. It can still be done with the assembly out but it's easier in the car.
#7
I think Eric's point about having the car up high is so you can get under it and get the transmission, exhaust, motor mounts and all the rest of the stuff like wiring disconnected. Unless you have a tall gantry crane, you will need to put the car back on the ground because you will never get the engine and transmission over the front of the car.
#8
That is just a supplement for 1979 to the 1978 manual. For what you are doing, the 78 manual is probably what you want since the supplement just covers the changes from 1978 to 1979. You do not want a CD or reprint. What you want is an authentic GM Manual that has been used. I looked on ebay and here is the best deal I found.
1978 Pontiac Shop Service Manual Book OEM | eBay
1978 Pontiac Shop Service Manual Book OEM | eBay
#9
easy job , leave the transmission in .. Use a good old Craftsmen 9/16 combination wrench for the 6 bell housing bolts then loose the dust cover and drop exhaust or cut with sawzall if needed , 3 converter bolts easy peasey and the simple more bolts from the front with a ratchet and extension... ya'll talking about to read shop manual to pull this is ridiculous
#10
Sounds like you have removed an engine or two in your life time but for someone that has never done this before might be a good idea to get a manual, this way he can check all the boxes when doing so. There’s a lot more than just unbolting the bell housing and exhaust. This is probably a young man just learning.
#11
Yep, young man just learning lol. I'm trying to figure out what would be the easiest option. Id like to leave the transmission in but just looking at it, it looks like some of the bolts would be very hard to get too. I'll slowly figure it out but any info or advice in detail helps
#12
Gearman69, you or I and many others on here could pull this engine in a few hours without a manual. This is a young enthusiast that has never pulled an engine and thus my recommendation for a shop manual which he will be able to use even when he is done with this project. So no, I don't think it is ridiculous. Putting the engine back in is going to be more involved than pulling it.
Last edited by redoldsman; March 11th, 2024 at 01:41 PM.
#13
Yep, young man just learning lol. I'm trying to figure out what would be the easiest option. Id like to leave the transmission in but just looking at it, it looks like some of the bolts would be very hard to get too. I'll slowly figure it out but any info or advice in detail helps
#14
If you don't pull the transmission, be sure to support the front to prevent it from drooping. After the engine is out, I use a coat hanger or similar wire bent through one of the upper bell housing bolt holes and attached to the upper firewall / cowl area.
#15
something like these work for the offset wrenches?
https://www.harborfreight.com/8-piec...hoCjBEQAvD_BwE
#16
Gearman69, you or I and many others on here could pull this engine in a few hours without a manual. This is a young enthusiast that has never pulled an engine and thus my recommendation for a shop manual which he will be able to use even when he is done with this project. So no, I don't think it is ridiculous. Putting the engine back in is going to be more involved than pulling it.
Thanks for the info, everything helps!
#17
We all started somewhere. When many of us started, we didn't have the advantage of the internet or a site like this. We read books and magazines. Good luck on your project. Where are you located?
#18
Yes, Ive got the right block brackets. Thanks!
something like these work for the offset wrenches?
https://www.harborfreight.com/8-piec...hoCjBEQAvD_BwE
something like these work for the offset wrenches?
https://www.harborfreight.com/8-piec...hoCjBEQAvD_BwE
#19
Most of us just rolled up our sleeves and dove into the deep end head first, then over came problems as they came up. Trial by fire.
Last edited by oldcutlass; March 11th, 2024 at 05:12 PM.
#20
North Alabama, the car is my dad's that sat for 20 some years so just getting it going has been great. We both agreed though that the 301 needed to go and i found a deal on the 403 that i couldnt pass up.
#21
I know what you mean, i'll keep all that in mind though whenever something isnt working for me lol. Thanks for the info
#22
All good advice above. Would only suggest buying the 78 manual as stated and the digital version; each have their strengths like being able to keyword search on the digital. As a newbie myself, only advice I didn't see was to take your time. Lastly, I always put parts in Ziploc baggies with labels (piece of masking tape inside the bag for a label) and notate what it goes too. Then put those bags together, e.g all transmission bags into one large paper bag.
Last edited by MO Olds 2022; March 13th, 2024 at 09:34 AM.
#23
Here's my list on how to pull an engine, cut and pasted into here.
Vehicle Prep
Wash entire vehicle including underhood and beneath
Clean out garage, get bags and boxes, camera
move vehicle to garage
Remove Battery
trans to neutral
Block wheels
Air Cleaner
remove Carb/injection
plug fuel lines.
Remove Distributor cap
Radiator shroud
Fan and belts
Alternator
Unbolt and Lay aside A/c Compressor WITHOUT REMOVING LINES
Vacuum Lines
EGR Valve?
Label and pull Ignition wires and Cap
Oil Pressure Sender wire
Water temp wire
Choke wire
Throttle cable
Jack up car and put on stands
remove torque converter cover
turn engine to #1TDC using flywheel tool
Mark and take pictures of dist rotor/base position.
Crossmember and trans bolts
Trans linkage
Speedo Cable/Trans Connectors
Exhaust and long tube headers
O2 sensor and wire
Battery cables
Starter wiring
Kickdown/TV linkage
Rear Ujoint – carrier bearing, Driveshaft
Plug and tape trans end housing
Drain coolant
Radiator
Radiator hoses
Power Steering Pump
Transmission Cooler Lines - plug holes
Fuel Lines
Heater hoses
Motor Mount Bolts
Install lift chain
lower car Mark Hood Hinges
Remove Hood
Raise Trans w jack, remove crossmember
Pull Engine
raise engine slowly, checking for entanglements, lower jack under trans.
Motor mount supports
lower onto prepped tire
plug all entries with tape/plugs
Put Away Tools/ store engine and trans.
Install Hood and park vehicle
Cleanup and Car Prep
Clean underhood
Fix wiring issues, plug firewall holes
Cut holes in frame for motor mount bolt access?
replace motor and trans mounts
Paint underhood
clean and paint crossmember
Clean transmission and paint exterior
Replace transmission seals front and rear
install converter, verify pump engagement
install trans on engine, use blue loctite on flexplate bolts
Adjust Kickdown cable
body to frame ground strap
install transmission lines on trans
fuel filter and rubber lines replaced
replace heater hoses
lube suspension
Reinstallation
Long Tube Headers in car
Install Engine/Trans
Motor Mount Bolts
Trans bolts and crossmember
lift chain removal - hoist to storage
raise car
driveshaft
trans connectors and cables - lockup wiring
shift linkage
starter
starter wiring
block to body ground strap
knock sensor
block to frame ground
torque converter cover
exhaust
emergency brake cable adjust
lower car
O2 sensor
oil pressure sender/line
distributor, advance line, wiring
TBI/Carb/MAP sensor/Temp Sensors
brackets
coil - ignition wiring
throttle Linkage
fuel lines
vac lines
wiring
front brackets and mounts
PS pump
accessories
belts
ignition wires
fans
radiator and shroud
heater hoses
trans lines
rad hoses
battery cables
Before Starting
remove everything from behind and around vehicle
have wet towels, water hose, fire extinguisher ready
have phone ready
battery installed and on charger
disconnect ignition
verify full of oil, ATF, PS fluid, fuel and WATER - no leaks
add 8qts trans fluid if dry.
check vehicle brakes, rad cap off
Engine needs to be pre-lubed w drill or plugs removed and spun w starter
Insert dist and set timing - verify #1TDC on FIRING cycle, connect timing light.
fill carb bowl with squirt gun filled with 2 cycle premix
Push out of garage before testing fuel pump or starting
EFI - turn fuel pump on and verify no fuel leaks,
connect injectors and ignition
Startup and Break-In
Set brakes, start cranking, check timing if no fire in 5 seconds.
Watch oil pressure, shut off if no pressure in 2 sec.
once oil pressure OK, 2000-3000rpm for 30 minutes verify temp, voltage, oil pressure normal.
Have someone watch for leaks and fires
add water as needed after startup, 2qts trans fluid
allow to idle and check trans level, verify temp, voltage, oil pressure normal.
Adjust timing and carb, Check Reverse and Drive work before leaving driveway.
Take for an easy drive - verify shifting thru all gears and lockup
2nd gear half throttle to 2-4k 20 times up and down.
Go park and check for leaks.
Drain water and refill with 50% coolant mix
Change oil and filter to 10w30 oil w zinc additive for non-roller cams - check for metal
Drive less than half throttle, less than 4000rpm for 500 miles.
Change oil and filter to 10w30 oil w zinc additive for non-roller cams - check for metal
Change oil and filter in 2000 miles to 10w30 conventional
Drive Normally, use full throttle and under 6000 rpm
Change to synthetic 5w30 after 4000 miles.
Engine Pulling List
Stuff to get - hoist, jack and stands, pulling chain, engine tilter, long ⅜ bolts, nuts, and washers, engine stand, tire, pressure washer, wheel chocks, plastic bags, duct tape, trans yoke or plug, sharpies, digital camera, rubbermaid totes, trash bags, rags, power steering pump puller. Metric engine stand bolts for LS.Vehicle Prep
Wash entire vehicle including underhood and beneath
Clean out garage, get bags and boxes, camera
move vehicle to garage
Remove Battery
trans to neutral
Block wheels
Air Cleaner
remove Carb/injection
plug fuel lines.
Remove Distributor cap
Radiator shroud
Fan and belts
Alternator
Unbolt and Lay aside A/c Compressor WITHOUT REMOVING LINES
Vacuum Lines
EGR Valve?
Label and pull Ignition wires and Cap
Oil Pressure Sender wire
Water temp wire
Choke wire
Throttle cable
Jack up car and put on stands
remove torque converter cover
turn engine to #1TDC using flywheel tool
Mark and take pictures of dist rotor/base position.
Crossmember and trans bolts
Trans linkage
Speedo Cable/Trans Connectors
Exhaust and long tube headers
O2 sensor and wire
Battery cables
Starter wiring
Kickdown/TV linkage
Rear Ujoint – carrier bearing, Driveshaft
Plug and tape trans end housing
Drain coolant
Radiator
Radiator hoses
Power Steering Pump
Transmission Cooler Lines - plug holes
Fuel Lines
Heater hoses
Motor Mount Bolts
Install lift chain
lower car Mark Hood Hinges
Remove Hood
Raise Trans w jack, remove crossmember
Pull Engine
raise engine slowly, checking for entanglements, lower jack under trans.
Motor mount supports
lower onto prepped tire
plug all entries with tape/plugs
Put Away Tools/ store engine and trans.
Install Hood and park vehicle
Cleanup and Car Prep
Clean underhood
Fix wiring issues, plug firewall holes
Cut holes in frame for motor mount bolt access?
replace motor and trans mounts
Paint underhood
clean and paint crossmember
Clean transmission and paint exterior
Replace transmission seals front and rear
install converter, verify pump engagement
install trans on engine, use blue loctite on flexplate bolts
Adjust Kickdown cable
body to frame ground strap
install transmission lines on trans
fuel filter and rubber lines replaced
replace heater hoses
lube suspension
Reinstallation
Long Tube Headers in car
Install Engine/Trans
Motor Mount Bolts
Trans bolts and crossmember
lift chain removal - hoist to storage
raise car
driveshaft
trans connectors and cables - lockup wiring
shift linkage
starter
starter wiring
block to body ground strap
knock sensor
block to frame ground
torque converter cover
exhaust
emergency brake cable adjust
lower car
O2 sensor
oil pressure sender/line
distributor, advance line, wiring
TBI/Carb/MAP sensor/Temp Sensors
brackets
coil - ignition wiring
throttle Linkage
fuel lines
vac lines
wiring
front brackets and mounts
PS pump
accessories
belts
ignition wires
fans
radiator and shroud
heater hoses
trans lines
rad hoses
battery cables
Before Starting
remove everything from behind and around vehicle
have wet towels, water hose, fire extinguisher ready
have phone ready
battery installed and on charger
disconnect ignition
verify full of oil, ATF, PS fluid, fuel and WATER - no leaks
add 8qts trans fluid if dry.
check vehicle brakes, rad cap off
Engine needs to be pre-lubed w drill or plugs removed and spun w starter
Insert dist and set timing - verify #1TDC on FIRING cycle, connect timing light.
fill carb bowl with squirt gun filled with 2 cycle premix
Push out of garage before testing fuel pump or starting
EFI - turn fuel pump on and verify no fuel leaks,
connect injectors and ignition
Startup and Break-In
Set brakes, start cranking, check timing if no fire in 5 seconds.
Watch oil pressure, shut off if no pressure in 2 sec.
once oil pressure OK, 2000-3000rpm for 30 minutes verify temp, voltage, oil pressure normal.
Have someone watch for leaks and fires
add water as needed after startup, 2qts trans fluid
allow to idle and check trans level, verify temp, voltage, oil pressure normal.
Adjust timing and carb, Check Reverse and Drive work before leaving driveway.
Take for an easy drive - verify shifting thru all gears and lockup
2nd gear half throttle to 2-4k 20 times up and down.
Go park and check for leaks.
Drain water and refill with 50% coolant mix
Change oil and filter to 10w30 oil w zinc additive for non-roller cams - check for metal
Drive less than half throttle, less than 4000rpm for 500 miles.
Change oil and filter to 10w30 oil w zinc additive for non-roller cams - check for metal
Change oil and filter in 2000 miles to 10w30 conventional
Drive Normally, use full throttle and under 6000 rpm
Change to synthetic 5w30 after 4000 miles.
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