390 head rebuild
#1
#2
#4
Btw, you're likely better off ditching those OEM heads and going aluminum. Compare Eddy RPM heads (PN 60069 about $1300 per pair) to the labor and materials involved with rebuilding stock heads (seats, guides, seals, springs, retainers, lapping, assembly, etc.) and you'll likely find that for a few hundred dollars more will result in significant performance and efficiency gains.
... and that's my nickel.
#5
I'll just add most of the cost to rebuild heads is machining. There are lots of ways to do it and different outcomes. What is required depends a lot on current condition of the heads.
Inspection by a competent and trust-worthy machine shop would give you a good idea of needs and choices you can make. As HIO said, full re-build of a tired set of heads for new or better durability can be very spendy. If the heads are in unusually good shape or you make some lower cost choices, can be a lot less. I had a budget rebuild done on a set of iron heads years ago and they lasted 50k miles. I was delighted at the time.
Inspection by a competent and trust-worthy machine shop would give you a good idea of needs and choices you can make. As HIO said, full re-build of a tired set of heads for new or better durability can be very spendy. If the heads are in unusually good shape or you make some lower cost choices, can be a lot less. I had a budget rebuild done on a set of iron heads years ago and they lasted 50k miles. I was delighted at the time.
#6
#7
If he was not so far away, the OP would probably like to talk to your shop! $300/pair is a good deal.
New valve seats (in case the hardening on the originals is worn through or seats sunk), new bronze guides, new valves and new springs could add quite a bit. With all that, rebuild cost would be pretty high... close to or higher than new AL heads which also breath better.
Hopefully the OP's heads are not in real bad shape and he can find a good shop to freshen them at lower cost - like $300 - for stock rebuild.
New valve seats (in case the hardening on the originals is worn through or seats sunk), new bronze guides, new valves and new springs could add quite a bit. With all that, rebuild cost would be pretty high... close to or higher than new AL heads which also breath better.
Hopefully the OP's heads are not in real bad shape and he can find a good shop to freshen them at lower cost - like $300 - for stock rebuild.
Trending Topics
#8
Maybe I have unwittingly been getting lucky with them being in good shape. Is it the FE heads that are expensive or are these costs typical for all v8 heads? I had a pair of gt40p's for a 302 done for $200 a while back and they have been running great. Granted these are a few decades newer than any FE head but still they had 300k on them.
#9
Wanted to make sure I wasn't talking out my rear end here so decided to visit the machine shop I am referring to... they are currently building my 390 so a good opportunity to check in. Long and short of it is that heads do usually run in the $300-$400 range. They also seem to be well versed in older engines... they had several flat head type engines in the works. If it helps anyone, the name is Hust Bros. out of Marysville, CA.
#10
On FE engines, find a shop that knows older engines. These heads are hardened, so machining Should be done to a minimum. Hardened seats are not necessary. When I took mine in, The guy says, "Oh, worken on a 390?" as I grabbed a head from the back of the truck. He did a little surface planing, put in new valve seals and a little cleaning and testing. Total cost for head work, full gasket kit, frost plugs and ARP headbolts was a little over $300.
Thread
Thread Starter
Forum
Replies
Last Post
Snowking
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
1
09-03-2007 06:23 AM
josh390
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
17
10-06-2006 09:57 PM
briansocal
1961 - 1966 F-100 & Larger F-Series Trucks
3
12-10-2005 09:27 AM
JDenver
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
3
11-19-2004 11:43 AM