1/2" pickup tube worth the effort??
#227576
02/17/09 01:34 AM
02/17/09 01:34 AM
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Joined: Jul 2006
Posts: 4,319
Puyallup, WA
StealthWedge67
OP
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OP
master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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451" low-deck wedge that will see 6500 RPM. have a 7 qt. pan, and will be running an HV pump. Is it a mandatory upgrade?
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: 1/2" pickup tube worth the effort??
[Re: StealthWedge67]
#227577
02/17/09 02:31 AM
02/17/09 02:31 AM
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Joined: Jan 2003
Posts: 1,990
s. e. pa.
calrobb2000
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,990
s. e. pa.
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hi run the samm rpm on my 440 with std 3/8 pickup and no prob . 7 qt pan , hv pump , .0025 rods ,.003 mains , 20 w 50 oil! 
Last edited by calrobb2000; 02/17/09 02:32 AM.
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Re: 1/2" pickup tube worth the effort??
[Re: StealthWedge67]
#227578
02/17/09 02:41 AM
02/17/09 02:41 AM
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Joined: Aug 2003
Posts: 43,097
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,097
Bend,OR USA
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Quote:
451" low-deck wedge that will see 6500 RPM. have a 7 qt. pan, and will be running an HV pump. Is it a mandatory upgrade?
Absolutely not  I use the stock mopar 3/8 pickup and the Mopar 1970-71 Hemi- 440 6 pak oil pan, 7 quarts with the oil filter  I use the full groove Federal Mogul truck main bearings and the Federal Mogul race rod bearings, both have a lot of oil clearances so the motor flows a lot of oil thru it while being run. I shift it at 7000+ at the track and I drive it a little (less than a thousand miles a year) on the street so the oil temps get up to or above 180F regularly on the street. I use the standard 5W20 wt. Valvolline non synthetic oil and I do inspect the motor regulary, no lubrication problems so far in three years of racing and street driving  I do use a crankshaft scraper(.060 max clearances to the rotating parts) and a stock Mopar windage tray and a Melling high volume oil pump with the bypass spring cut down to provide 68 lbs when hot at 6800 rpm and higher, maybe I should try another spring and cut about a 1/4 turn less off of it  that would probally give me around 73 lbs at 7300 rpm  that or use 10w30 wt oil  IHTHs. The reason I use the stock 3/8 pick ups now is I have had several motors crack the oil pump boss in the block when changing them to the 1/2 pipe threads for the 1/2 pick up  Not good
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 1/2" pickup tube worth the effort??
[Re: Cab_Burge]
#227579
02/17/09 10:10 AM
02/17/09 10:10 AM
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Anonymous
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Anonymous
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Quote:
Absolutely not I use the stock mopar 3/8 pickup and the Mopar 1970-71 Hemi- 440 6 pak oil pan, 7 quarts with the oil filter I use the full groove Federal Mogul truck main bearings
which part # would those main bearings be?
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Re: 1/2" pickup tube worth the effort??
#227580
02/17/09 08:22 PM
02/17/09 08:22 PM
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Anonymous
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Anonymous
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Re: 1/2" pickup tube worth the effort??
#227581
02/18/09 12:24 AM
02/18/09 12:24 AM
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Joined: Aug 2003
Posts: 43,097
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,097
Bend,OR USA
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Quote:
Quote:
Absolutely not I use the stock mopar 3/8 pickup and the Mopar 1970-71 Hemi- 440 6 pak oil pan, 7 quarts with the oil filter I use the full groove Federal Mogul truck main bearings
which part # would those main bearings be?
The Summit part # for the Federal Mogul narrow full groove main bearings for the early (pre 1972) 440 blocks is FEM-4095M and the early low deck blocks are part number FEM-4094, Summit doesn't stock them but they will drop ship them directly to you I was looking at Summits commercail site today and couldn't find them in thier bearing listings, I typed those part numbers in and they come up without any description of what they fit or what years they fit I like them a lot and use them all of the time I don't know the part numbers for the later blocks, 1973 and on, sorry
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 1/2" pickup tube worth the effort??
[Re: AndyF]
#227584
02/18/09 09:04 AM
02/18/09 09:04 AM
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Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581
master
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master
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
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We've never changed ours and never had any problems.
Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
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Re: 1/2" pickup tube worth the effort??
[Re: AndyF]
#227585
02/18/09 10:39 AM
02/18/09 10:39 AM
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Joined: Jan 2003
Posts: 74,948
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,948
U.S.S.A.
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Quote:
The 1/2 pickup is nice to have but unless the shop is set up with a way to do it I wouldn't bother. It is easy to ruin the block if the setup isn't correct.
NEVER try to drill the passage by hand , the drill can have a mind of it's own ... bought the shirt and HAD the cracked block to prove it 
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Re: 1/2" pickup tube worth the effort??
[Re: JohnRR]
#227586
02/18/09 06:46 PM
02/18/09 06:46 PM
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Joined: Jan 2003
Posts: 9,870
Weddington, N.C.
Streetwize
master
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Joined: Jan 2003
Posts: 9,870
Weddington, N.C.
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A easier mod might be to port your oil pump and enlarge the internal passages; chamfer the sharp right angle turn within the pump housing itself, it's an extremely shrp angle as deleivered I usually radius the turns with a balloon or acorn shaped carbide bit. Even the 1/2" pick-up is limited by the 3/8-7/16" internals of the pump body anyway. my  there'd be little net benefit to a 1/2" pickup anyway if you don't port the pump Chamfering the pump inlet passage in the block (where it mates to the pump) is worth some easy flow too. I've used ported stock BB pumps to 7500RPM and most HV pumps actually use the same restricted pump Head as the stock ones do.
Last edited by Streetwize; 02/18/09 06:47 PM.
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