suggestions on 390 build
#16
03-28-2009, 03:39 PM
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#17
03-29-2009, 12:32 AM
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#18
03-29-2009, 07:17 PM
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#19
03-30-2009, 03:30 PM
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yeah I know what you mean, If you know that it was a post '72 then you (unless someone has changed something) have D2TEAA heads, so same thing as the C8's except they already have the hardened seats. If you're gonna have to rebuild heads anyways then I would go yarding and see if you can't find something in the hi po arena. It's pretty easy to just go checking casting #'s.
#20
04-08-2009, 10:33 AM
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ok update.
got the parts to the shop finally.
crank needs ground, heads need redone, and the block needs bored. its tapered...
i guess no real surprises. i questioned the block...and after some thought, i decided to go ahead and have it bored. i just dont want any issues down the road.
im having him check the rods, but it looks like theyre gonna need to be resized. so for all the machine work, including rebuilding the heads,replacing 8 ex valves, and 1 intake, is gonna be just short of $900.
does that sound reasonable? i didnt think that was too bad.
oh, and i looked into a cam....what do you think about 1 of these. its a somewhat local company DELTA cams.
ABX (1,000- 5,500rpms)
206' dur .481 lift int
221' dur .490 lift exh
214 (1,200- 5,000 rpms)
214' dur .466 lift int & exh
im leaning towards the ABX, since the power comes in a bit sooner. and should have a better sound aswell...or so im being told.
got the parts to the shop finally.
crank needs ground, heads need redone, and the block needs bored. its tapered...
i guess no real surprises. i questioned the block...and after some thought, i decided to go ahead and have it bored. i just dont want any issues down the road.
im having him check the rods, but it looks like theyre gonna need to be resized. so for all the machine work, including rebuilding the heads,replacing 8 ex valves, and 1 intake, is gonna be just short of $900.
does that sound reasonable? i didnt think that was too bad.
oh, and i looked into a cam....what do you think about 1 of these. its a somewhat local company DELTA cams.
ABX (1,000- 5,500rpms)
206' dur .481 lift int
221' dur .490 lift exh
214 (1,200- 5,000 rpms)
214' dur .466 lift int & exh
im leaning towards the ABX, since the power comes in a bit sooner. and should have a better sound aswell...or so im being told.
#21
04-08-2009, 03:35 PM
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#22
04-08-2009, 06:45 PM
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#23
04-08-2009, 06:59 PM
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that doesnt sound like too bad of a price for the work, might even be a little cheaper than the shops around here. there are better cam choices though, seeing as they are only around 85-170 bucks, why not just go ahead and get some more performance. Here's a suggestion:
Lunati Voodoo
Advertised Duration (Int/Exh): 256/262
Duration @ .050 (Int/Exh): 213/219
Gross Valve Lift (Int/Exh): .524/.540
LSA/ICL: 112/108
if you want to stay milder you can go with your "ABX" or similiar grind like compcams XE256H. hope it helps.
Lunati Voodoo
Advertised Duration (Int/Exh): 256/262
Duration @ .050 (Int/Exh): 213/219
Gross Valve Lift (Int/Exh): .524/.540
LSA/ICL: 112/108
if you want to stay milder you can go with your "ABX" or similiar grind like compcams XE256H. hope it helps.
#24
04-09-2009, 08:19 PM
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#25
04-09-2009, 09:24 PM
Any particular reason for not wanting the headers? The FE is notorious for having poor exhaust. Anything you gain in flow is useless unless you can get rid of it. If you do get the 3.98 crank use the 360 flat top pistons and they will put you in the CR you want, plus they're cheap.
This is might be a good cam for you:
Lunati Voodoo
Adv. 262/268
@.050 219/227
lift .540/.552
Lsa108
1300-5500 rpm
I assume you wont be getting above 5500rpm in your tow truck so if you dont mind lugging that boat anchor iron intake around, there's really not a big need for an aluminum. Until your back goes out. Used 428 cranks are hard to come by in the yards. Try craigslist. For what you are doing the 390 will be plenty capable.
For less than the price of a valve job i got some fresh heads with the CJ valves already done, do a little hand porting and they are pretty lively. Look around before you decide to pay someone $1200, mine were $550. Hope it helps.
This is might be a good cam for you:
Lunati Voodoo
Adv. 262/268
@.050 219/227
lift .540/.552
Lsa108
1300-5500 rpm
I assume you wont be getting above 5500rpm in your tow truck so if you dont mind lugging that boat anchor iron intake around, there's really not a big need for an aluminum. Until your back goes out. Used 428 cranks are hard to come by in the yards. Try craigslist. For what you are doing the 390 will be plenty capable.
For less than the price of a valve job i got some fresh heads with the CJ valves already done, do a little hand porting and they are pretty lively. Look around before you decide to pay someone $1200, mine were $550. Hope it helps.
#26
04-10-2009, 01:02 PM
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WTF ? You get a 3.98 crank and 360 pistons and you'll have a POS on your hands in short order. You don't need a high compression engine for a fkn work'n truck that will be towing 7500lbs. The suggested setup WILL NOT F'n work, the piston will contact the valves if not the head itself. If your going to advise someone on a setup... "KWTFYTA"
First, I meant 390 pistons...the 9 is right above the 6, looks like I missed.. "flat top" is just a mistake, should be "truck"...sorry, thanks for the correction.
Second, I understand that you dont want someone to use bad info, but learn some tact, round these parts if someone's mouth gets ahead of them we have ways to fix that.
#27
04-10-2009, 03:09 PM
First, I meant 390 pistons...the 9 is right above the 6, looks like I missed.. "flat top" is just a mistake, should be "truck"...sorry, thanks for the correction.
Second, I understand that you dont want someone to use bad info, but learn some tact, round these parts if someone's mouth gets ahead of them we have ways to fix that.
Second, I understand that you dont want someone to use bad info, but learn some tact, round these parts if someone's mouth gets ahead of them we have ways to fix that.
#28
04-10-2009, 03:39 PM
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The 360 and 390 use the same pistons, it's the stroke that is different. Ford did this from the factory to come up with the Mercury 410. You can put a 428 crank in either one and stroke it to a 410. I have done this with 360 and 390 blocks with rv cams and it works great. Except for constantly breaking motor mounts.
#29
04-10-2009, 07:24 PM
The 360 and 390 use the same pistons, it's the stroke that is different. Ford did this from the factory to come up with the Mercury 410. You can put a 428 crank in either one and stroke it to a 410. I have done this with 360 and 390 blocks with rv cams and it works great. Except for constantly breaking motor mounts.
#30
04-10-2009, 08:54 PM
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