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Just purchased a 98 4.6 Convertible

  • Thread starter Thread starter Bhall
  • Start date Start date Apr 17, 2019
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Bhall

New Member
Apr 17, 2019
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Alabama
Apr 17, 2019
#1
  • Apr 17, 2019
  • #1
Its is suppose to have an 03 4.6 installed. Is there an easy way to tell?
 

wmburns

SN Certified Technician
Aug 14, 2009
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Houston Texas
Apr 20, 2019
#2
  • Apr 20, 2019
  • #2
Yes. Look for the casting numbers on the cylinder head castings. Should be PI.
 
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B

Bhall

New Member
Apr 17, 2019
3
0
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Alabama
Apr 20, 2019
#3
  • Apr 20, 2019
  • #3
wmburns said:
Yes. Look for the casting numbers on the cylinder head castings. Should be PI.
Click to expand...
Having to install a new timing cover and its starting look like I have a frankenstang. I'm pulling parts from whats suppose to be an 03 engine but idler pulley is from 97,alternator was off a 98 (not top brace) the coil packs are out front with 4 on each side instead of individual coil packs per plug so pre 99. Lol. Its nuts. Thanks for the help wmburns.
 

wmburns

SN Certified Technician
Aug 14, 2009
5,892
514
204
Houston Texas
Apr 20, 2019
#4
  • Apr 20, 2019
  • #4
Bhall said:
but idler pulley is from 97,alternator was off a 98 (not top brace) the coil packs are out front with 4 on each side instead of individual coil packs per plug so pre 99.
Click to expand...
IMO you may have some misunderstanding of what you should be seeing. The long block may indeed be from an 2003, BUT the PCM and electronics are still from a 1998. Therefore the motor needs to look (electrically) like the original. Which means a coil pack ignition system.

If you are expecting COP ignition because the motor is from a model year with COP ignition this would be incorrect. The PCM would still be expecting to control a coil pack ignition as well as the wiring harness would have wiring to support a coil pack ignition.

What's the difference? For one a COP PCM would have (8) coil drivers where as a coil pack PCM will have only (4) because of the waste spark system.

Because the resulting motor "package" needs to look like the original, I would expect it to have the same alternator for the same reasons.

This all sounds correct to me. So unless you want to pull the intake manifold to look at the shape of the intake ports, it would seem to me that looking at head casting numbers would be much easier.
 
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Bhall

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Apr 17, 2019
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Alabama
Apr 22, 2019
#5
  • Apr 22, 2019
  • #5
I see. Thanks. I've found a timing cover that matches the one on the car but its from a 97 98 year model for everything 4.6 and 5.4 lol Thanks for your help.
 
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