390 Rebuild
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Joined: Jan 2001
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390 Rebuild
I am rebuilding a 75 390 to put into my 67 F100. I want to bring the compression back up to what it was in the 60's. What is the easiest way to do this? I can't find any high performance parts such as dome top pistons. Any suggestions?
Posting Guru
Joined: Jul 1999
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From: Inthepast
390 Rebuild
[FONT COLOR="#0000ff" SIZE="3" FACE="Veranda"]
Why not research which 390 engine from the 60's had the compression ratio you were looking for and build this 390 to those specs?[/FONT]
[LINK:www.hometown.aol.com/tbeeee|http://members.aol.com/tbeeee/page/registrysig.gif]
Why not research which 390 engine from the 60's had the compression ratio you were looking for and build this 390 to those specs?[/FONT]
[LINK:www.hometown.aol.com/tbeeee|http://members.aol.com/tbeeee/page/registrysig.gif]
Junior User
Joined: Jan 2001
Posts: 77
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390 Rebuild
The stock 390 pistons with the eye brows and small dish is around 9.5-9.8 and if you use the TRW flat tops it will be around 10.5. There are alot of performance parts out there,my 390 pushes my 67 f250 to 15 sec quaters at 85 mph. I'm going through the engine again to try to hit the 13's. If you want more info e-mail me- thenkel2@unions-america.com
Cargo Master
Joined: Jul 2000
Posts: 2,281
Likes: 18
From: Northern California
390 Rebuild
>The stock 390 pistons with the
>eye brows and small dish
>is around 9.5-9.8 and if
>you use the TRW flat
>tops it will be around
>10.5. There are alot of
>performance parts out there,my 390
>pushes my 67 f250 to
>15 sec quaters at 85
>mph. I'm going through the
>engine again to try to
>hit the 13's. If you
>want more info e-mail me-
>thenkel2@unions-america.com
I think all of us would be interested to see what combo you have. I'm into FE's and like to hear what setup others have had success with. How about including info on gears trans & tires?
Thanks, Karl.
>eye brows and small dish
>is around 9.5-9.8 and if
>you use the TRW flat
>tops it will be around
>10.5. There are alot of
>performance parts out there,my 390
>pushes my 67 f250 to
>15 sec quaters at 85
>mph. I'm going through the
>engine again to try to
>hit the 13's. If you
>want more info e-mail me-
>thenkel2@unions-america.com
I think all of us would be interested to see what combo you have. I'm into FE's and like to hear what setup others have had success with. How about including info on gears trans & tires?
Thanks, Karl.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
390 Rebuild
Karl, try that link that I posted. Them boys are pumped up FE crazy there. Big time drag racing forumn for FEs.
John
jowilker
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
John
jowilker
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
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Laughing Gas
Joined: Oct 1999
Posts: 1,188
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From: yes
390 Rebuild
Look for posts from a guy by the name of bill ballinger, he has a F-250 with a 390, it'd probably help most of us here to learn about how to hop up a 390 for a truck. sounds like a good combo from what I've read of it
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Junior User
Joined: Jan 2001
Posts: 70
Likes: 0
390 Rebuild
The 390 is an excellent engine to rebuild and easy as well. I don't understand why everybody say's that these engines were problematic when all i've had was good experiences with these. there are many aftermarket part's and many in the junkyard's. Parts interchange is almost endless aswell.
Elder User
Joined: Jun 1999
Posts: 940
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From: LAT 46.55501° & LON -122
390 Rebuild
I don't think I have ever heard anyone with any intelligence say that these engines were problematic. The only ones that have were Chevy lovers--they were problematic for them to beat.
Senior User
Joined: Dec 2000
Posts: 435
Likes: 0
From: Nebraska Farm
390 Rebuild
I really don't think you can hurt an FE. I've had one on fire, ran it out of water and made it home 20 miles. popped a freeze plug out the next winter when I got water back in it, and it will still run. I just had to build myself one to put in my daily driver (see below). My only complaint is that the exhaust manifolds keep leaking.
Dave,
79 F-150 4x4, 390 w/C6, Edelbrock carb, 33X12.50 never will be finished.
Dave,
79 F-150 4x4, 390 w/C6, Edelbrock carb, 33X12.50 never will be finished.
Junior User
Joined: Jan 2001
Posts: 77
Likes: 0
390 Rebuild
Its a stock .060 long block with c8ae-h heads , comp cams 268 cam,edelbrock performer intake, holley 3310 750,headers,mallory distributor,hyfire and timing computer. I'm now installing forged flat top pistons,windage tray,retarding the cam 4 degrees,roller rockers,edelbrock performer RPM manifold. I had the stock cruise o matic in it but I'm putting in a c-6.I run 28" tall MT ET streets w/ the stock 3.73 gears.
Cargo Master
Joined: Jul 2000
Posts: 2,281
Likes: 18
From: Northern California
390 Rebuild
That sounds like a real stump puller! Also sounds like you're getting ready to open the wallet! I've been thinking about those Edel RPM heads myself and decided that it was too high an RPM range for my setup. So I spent the 'extra' money on converting over to a 428 crank & flywheel setup. I ported the C7AE-A heads for a little more flow.
If you get the Edel RPM Heads, you might want to switch over to the RPM intake, I bought one for later use and understand the RPM range is 1500~6500.
By the way, I'm on that FE forum all the time. You're right those guys really know their stuff, I've learned a lot there. I've been reading and discussion with Bill Ballinger for quite a while now, he's got a cool setup.
If you get the Edel RPM Heads, you might want to switch over to the RPM intake, I bought one for later use and understand the RPM range is 1500~6500.
By the way, I'm on that FE forum all the time. You're right those guys really know their stuff, I've learned a lot there. I've been reading and discussion with Bill Ballinger for quite a while now, he's got a cool setup.
Senior User
Joined: Jan 2001
Posts: 252
Likes: 0
From: taylor usa
390 Rebuild
Is it true that the compression ratio was increased on four barrel engines. Does this even apply to the later models, as late as the mid to late 70's? Is it done simply with pistons, or did the heads change also?