Re: Do you use offset lifters with you 440 -1 heads?
[Re: Jeremiah]
#2704702
10/07/19 08:56 PM
10/07/19 08:56 PM
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Joined: Feb 2005
Posts: 20,158 PA.
pittsburghracer
"Little"John
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"Little"John
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Posts: 20,158
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You can see some of the grinding I had to do on the deck and valley in this picture
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: polyspheric]
#2704715
10/07/19 09:27 PM
10/07/19 09:27 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
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I like correcting pushrod angularity, but this must be weighed against "does it require a smaller pushrod OD than the other lifter choice"? The usual rule: if you're not sure your pushrod is the largest one that fits... it's too small.
I don't like the resulting angles with the offset rockers and lifter seats, but I suppose it's still less extreme than a Gen 2 Hemi valve train.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: BradH]
#2704753
10/08/19 04:41 AM
10/08/19 04:41 AM
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Joined: Mar 2003
Posts: 9,099 Rogue River, OR
Jeremiah
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I like correcting pushrod angularity, but this must be weighed against "does it require a smaller pushrod OD than the other lifter choice"? The usual rule: if you're not sure your pushrod is the largest one that fits... it's too small.
I don't like the resulting angles with the offset rockers and lifter seats, but I suppose it's still less extreme than a Gen 2 Hemi valve train. And then there is the argument concerning side loading the roller lifter. What is harder on the lifter, side loading the lifter bore from pushrod angularity or side loading the roller with the offset cup? Less p/rod angle equates to more net lift, correct?
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: BradH]
#2704754
10/08/19 04:44 AM
10/08/19 04:44 AM
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Joined: Mar 2003
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Jeremiah
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Some pics, in case it helps.
One (the one w/ the notes added) was something I found that Jim Hanrahan (440Jim) posted years ago. Looks like Jim's picture was taken w/ zero-offset lifters, but annotated to show where grinding would be needed to use offset intakes..
The others are from the mock-up I mentioned above. If you look closely at the #3 intake, you can see the masking tape I put on the pushrod is being torn off due to lack of clearance w/ the block boss. The intake pushrods were all really close, even if they didn't rub. I forgot to mention that part of my block prep includes cutting those lugs off when deburring the block.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: jughed]
#2704755
10/08/19 04:49 AM
10/08/19 04:49 AM
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Jeremiah
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0 offset Comp Cams 829-16s work just fine with 440-1s and 1.6 T&Ds. Pushrods are 3/8" Smith Bros.. Mega Block. Been running this 540" combo for 10+ years...zero issues I run straight rollers, Comps.
This site is going down hill fast with the stupid adds What ads?? AdBlock Plus https://adblockplus.org/ What kind of spring pressures are you running? Are those t and d rockers paired or shaft? Do you know the intake rocker offset? I think Brad mentioned .720 previously.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: Jeremiah]
#2704781
10/08/19 09:01 AM
10/08/19 09:01 AM
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Joined: Mar 2006
Posts: 1,229 In The Hills
jughed
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0 offset Comp Cams 829-16s work just fine with 440-1s and 1.6 T&Ds. Pushrods are 3/8" Smith Bros.. Mega Block. Been running this 540" combo for 10+ years...zero issues I run straight rollers, Comps.
This site is going down hill fast with the stupid adds What ads?? AdBlock Plus https://adblockplus.org/ What kind of spring pressures are you running? Are those t and d rockers paired or shaft? Do you know the intake rocker offset? I think Brad mentioned .720 previously. The springs are K-950s. The T&Ds are the shaft type. Can't recall the offset. No problems with the shaft style rockers, but looking back, I should have went with the paired rockers for the obvious benefits. But the heads were on and i didn't want to remove them for the required machine work.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: jughed]
#2704835
10/08/19 11:36 AM
10/08/19 11:36 AM
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Joined: Mar 2003
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Jeremiah
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Good info thanks boys. I will get the heads back and see how it looks.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: Jeremiah]
#2705076
10/09/19 09:07 AM
10/09/19 09:07 AM
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Joined: Jan 2003
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BradH
Taking time off to work on my car
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Taking time off to work on my car
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Val-haul-ass... eventually
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Andy, do you have any single sets of offset roller lifters in your mock up stash?
What are you looking for? I have a used pair of IMM (COMP-style) with centered exhaust and .180"-offset intakes. What I don't remember is whether the intake offset is for #1/#5/#4/#8 or #3/#7/#2/#6, though. EDIT: While digging around for more pushrod angle stuff, I came across this old thread on the subject: https://board.moparts.org/ubbthread...angles-b1-ts-2-hemi-99-goodwin-hemi.html
Last edited by BradH; 10/09/19 09:26 AM.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: BradH]
#2705476
10/10/19 10:56 AM
10/10/19 10:56 AM
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Joined: Mar 2003
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Jeremiah
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Thank you , good stuff. Thanks for probing the subject over on ST also. I will look past that violation of our agreement lol. I have not had time to harass uncle Dino about the heads. He said he would work on em.
Something about a little power outage in CA has been keeping me pretty tied up lol.
Good stuff keep it coming!
Last edited by Jeremiah; 10/10/19 10:57 AM.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: Jeremiah]
#2705511
10/10/19 12:36 PM
10/10/19 12:36 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Never having had my hands on a set of 440-1s... since a .800" rocker offset is used for centered (zero offset) lifters, would using a .180" or .210" offset lifter allow for using less rocker offset?
EDIT: Checked on the used lifter pair I have and they are for #1/#5/#4/#8
Last edited by BradH; 10/10/19 12:48 PM.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: BradH]
#2705564
10/10/19 03:05 PM
10/10/19 03:05 PM
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Jeremiah
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Never having had my hands on a set of 440-1s... since a .800" rocker offset is used for centered (zero offset) lifters, would using a .180" or .210" offset lifter allow for using less rocker offset?
EDIT: Checked on the used lifter pair I have and they are for #1/#5/#4/#8 Outstanding. I have the rocker gear here so let me see what the intake offset is.
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Re: Do you use offset lifters with you 440 -1 heads?
[Re: BradH]
#2707898
10/18/19 01:50 AM
10/18/19 01:50 AM
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Joined: Mar 2003
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Jeremiah
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Thank you I will post up some pics and we can chop it up lol.
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