Laundry List
11-29-2014, 09:17 AM
#21
Everything off to the shop yesterday! Having the block and crank checked, valve job on the heads, and intake timing cover and valve covers cooked out. The guy at the shop said that he wouldn't count on needing just a hone with the miles that were on it so It looks like I'll be buying pistons. I'm planning on keeping it for a long time so I don't want to push the limits of piston to bore clearance and just have it smoke later on after all this work. Looks like I'll be shopping master rebuild kits today to get some Ideas.....
11-29-2014, 05:06 PM
#23
This is a 5.8, that is what is in it now I don't want to change computers for a smaller engine. I have a 5.0 with 18k on it in a crown vic I had a fleeting thought about using but I decided that was too much trouble. 92F150 2WD EXT Cab 5.8 E4OD 3.55. I guess I should put that in my signature huh? LOL!
Last edited by oakleysdad; 11-29-2014 at 05:12 PM.
11-29-2014, 05:19 PM
#24
Which 5.0 is in the crown vic ? I ask because the 302 HO (stock in 95, 96 F150 and earlier in cars) works with the 5.8 computer.
It comes down to the camshaft which has different cam timing than normal 5.0 and so also different spark timing.
Upshot of all that is that even if the crown vic has a the regular 5.0 firing order, you can change it to match the 5.8 firing order just by installing the 5.0 HO cam.
Your rebuilder will probably tell you this, but what mine has to say is that if you put new pistons in, the whole assembly should be sent out to be rebalanced.
Apparently the counterweights have to exactly match the weight of the pistons/rods or it will play hell with the bearings. Around here they charge about $500 to balance an assembly.
It comes down to the camshaft which has different cam timing than normal 5.0 and so also different spark timing.
Upshot of all that is that even if the crown vic has a the regular 5.0 firing order, you can change it to match the 5.8 firing order just by installing the 5.0 HO cam.
Your rebuilder will probably tell you this, but what mine has to say is that if you put new pistons in, the whole assembly should be sent out to be rebalanced.
Apparently the counterweights have to exactly match the weight of the pistons/rods or it will play hell with the bearings. Around here they charge about $500 to balance an assembly.
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oakleysdad (11-29-2014)
11-29-2014, 05:42 PM
#25
Which 5.0 is in the crown vic ? I ask because the 302 HO (stock in 95, 96 F150 and earlier in cars) works with the 5.8 computer.
It comes down to the camshaft which has different cam timing than normal 5.0 and so also different spark timing.
Upshot of all that is that even if the crown vic has a the regular 5.0 firing order, you can change it to match the 5.8 firing order just by installing the 5.0 HO cam.
Your rebuilder will probably tell you this, but what mine has to say is that if you put new pistons in, the whole assembly should be sent out to be rebalanced.
Apparently the counterweights have to exactly match the weight of the pistons/rods or it will play hell with the bearings. Around here they charge about $500 to balance an assembly.
It comes down to the camshaft which has different cam timing than normal 5.0 and so also different spark timing.
Upshot of all that is that even if the crown vic has a the regular 5.0 firing order, you can change it to match the 5.8 firing order just by installing the 5.0 HO cam.
Your rebuilder will probably tell you this, but what mine has to say is that if you put new pistons in, the whole assembly should be sent out to be rebalanced.
Apparently the counterweights have to exactly match the weight of the pistons/rods or it will play hell with the bearings. Around here they charge about $500 to balance an assembly.
Last edited by oakleysdad; 11-29-2014 at 05:46 PM.
11-29-2014, 06:03 PM
#26
Alright Chris, Now you have me reading horror stories about people ordering "balanced rotating assemblies " only to find that they are 200+ grams off. No sleep for me tonight!!!!!!
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oakleysdad (11-30-2014)
12-03-2014, 06:49 PM
#28
Now I am up in the air again. I have a friend at work that has a 5.8 roller cam short block that is clean as a whistle and still has the factory hone marks in the cylinder walls for sale for $300. Since mine is going to cost upwards of $800 for shop charges and parts now I am wondering if I should buy this one and invest in some GT heads. He was going to put this engine in a Falcon project but decided to go with a 5.0 coyote motor instead. Would a stock roller cam engine and GT heads cause me problems with a speed density setup?
12-03-2014, 06:52 PM
#29
Senior Member
Provided the roller cam is stock, it won't cause any issues. With regards to the GT40 heads (I assume that's what you mean when you say GT heads) if you're trying to keep emissions connected, pre-96 heads is why you need. If you aren't trying to keep emissions connected, you can go with the 96-97 GT40 heads as well as pre-96.
If you're looking at GT40p heads, you'll need headers for them to work.
If you're looking at GT40p heads, you'll need headers for them to work.
The following users liked this post:
oakleysdad (12-03-2014)
12-03-2014, 07:48 PM
#30
Provided the roller cam is stock, it won't cause any issues. With regards to the GT40 heads (I assume that's what you mean when you say GT heads) if you're trying to keep emissions connected, pre-96 heads is why you need. If you aren't trying to keep emissions connected, you can go with the 96-97 GT40 heads as well as pre-96.
If you're looking at GT40p heads, you'll need headers for them to work.
If you're looking at GT40p heads, you'll need headers for them to work.
Last edited by oakleysdad; 12-03-2014 at 07:57 PM.
