Putting in an old engine
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Supreme Member
Joined: Jan 2001
Posts: 4,415
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From: Surrey, BC
Putting in an old engine
Can I put a 60s engine in my '89 Iroc reusing the 89 parts? I also have a set of '82 heads I would like to use but will they work with the reverse flow cooling of the serpentine? I just want to change the block and internal components and I want to know if it will work okay.
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The issues I see are:
1) Driver's side dipstick on the 60's engine won't fit stock manifolds.
2) Center two intake bolts to each head are a different angle on your '89 manifold than '86-prior heads.
3) '85-prior engines use one-piece rear main seal, which will require a different flexplate/flywheel than your '89.
4) Using '82 heads doesn't make any sense.
The serpentine direction is limited to the type of water pump - it's the direction the pump turns that is different, not the direction of the coolant flow. Putting your '89 piece (or suitable replacement) won't make any difference to the rest of the engine. It's the LT1's that reverse the flow direction of the coolant.
Exactly what engine do you have now, and what is this 60's engine? That info required before any further advice could be offered.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
1) Driver's side dipstick on the 60's engine won't fit stock manifolds.
2) Center two intake bolts to each head are a different angle on your '89 manifold than '86-prior heads.
3) '85-prior engines use one-piece rear main seal, which will require a different flexplate/flywheel than your '89.
4) Using '82 heads doesn't make any sense.
The serpentine direction is limited to the type of water pump - it's the direction the pump turns that is different, not the direction of the coolant flow. Putting your '89 piece (or suitable replacement) won't make any difference to the rest of the engine. It's the LT1's that reverse the flow direction of the coolant.
Exactly what engine do you have now, and what is this 60's engine? That info required before any further advice could be offered.
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
Thread Starter
Supreme Member
Joined: Jan 2001
Posts: 4,415
Likes: 2
From: Surrey, BC
Sorry about that I should have mentioned what I have:
Currently in the car: 305 TBI
in the garage: '64 327
the reason I want to use the '82 heads is because the TBI heads are swirl port heads which are crap for flow.
Currently in the car: 305 TBI
in the garage: '64 327
the reason I want to use the '82 heads is because the TBI heads are swirl port heads which are crap for flow.
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