Re: EQ heads+GM3100 springs
[Re: 84Stepside]
#65758
05/29/08 11:37 PM
05/29/08 11:37 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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At .320 lobe lift you are real close to the limit. I ran a cam with .320 on both sides and 1.7 roller rockers and it was tight but ran great to 6000rpm. Factory rockers are more like 1.65 ratio but the pushrod angle kills the actual lift back down to about what a 1.5 would give you, mabey a tad more. If you run the XE 268 you HAVE to check for coil bind on your exact motor. I think I had about .060 before coil bind. 1.6s would have given me a couple thou more, even a valve job would have helped. If you run the smaller one it should be good to go.
Are you talking raceing the truck or daily driver? You going to port them a little? What intake? headers? Stock 360 short block or different pistons?
PM me if you want the XE 268. I have a brand new one I might make a deal on.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: EQ heads+GM3100 springs
[Re: HotRodDave]
#65759
05/30/08 06:31 AM
05/30/08 06:31 AM
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Joined: Nov 2006
Posts: 1,086 Baton Rouge, La.
StandOnIt
super stock
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super stock
Joined: Nov 2006
Posts: 1,086
Baton Rouge, La.
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Why not run the stock beehives? I am putting over .500 lift to mine on the EQ heads. Runs fine.
76' Volare, 5.9 magnum w/Iron heads. New best 10.68 at 123 mph 1/4 mile.
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Re: EQ heads+GM3100 springs
[Re: StandOnIt]
#65760
05/30/08 07:45 AM
05/30/08 07:45 AM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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the stock springs are super soft. my stock magnum 318 would float the valves before 5000 RPM.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: EQ heads+GM3100 springs
[Re: StandOnIt]
#65764
05/31/08 08:59 AM
05/31/08 08:59 AM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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I have a set of stock magnums here and they go into coil bind before that. For that motor I would use the XE 268. or even the comp 280 magnum. Should be a 425 hp motor with lots of TQ.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: EQ heads+GM3100 springs
[Re: StandOnIt]
#65765
05/31/08 09:48 AM
05/31/08 09:48 AM
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Joined: Jan 2003
Posts: 1,586 Tampa, FL
tpabayflyer
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,586
Tampa, FL
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Sounds good Standonit.. can you give us more info on your combo??? rear gear? intake, chassis??? I am using the EQ heads with 2.02 intakes and the Comp XE275HL with 1.6 rockers.... 231/237 duration at .565 lift. I am using a 69 318 block with 4" crank in an 83 cordoba. I would have used the GM springs but I am using too much lift and had a set of the MP 6062 springs on hand with crane energizer 1.6 rockers. This combo pulls very good in the midrange and is still pulling when I hit the limiter at 6,000rpm.... I have no track times yet as I have to replace the oil pan and fix a leak..... EQ heads are working great for me!! TBF
71 Challenger 528 Hemi project 09 Gr Cherokee 5.7 hemi in da house!!
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Re: EQ heads+GM3100 springs
[Re: tpabayflyer]
#65766
05/31/08 01:44 PM
05/31/08 01:44 PM
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Joined: Jun 2003
Posts: 3,325 Truckville, the capital of NY
85_Ram_4speed
master
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master
Joined: Jun 2003
Posts: 3,325
Truckville, the capital of NY
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EQ heads aside (because they are specing them for a certian lift with springs), I think the whole thing with what valve lift you can run comes down to the particular set of heads you have.
Things like valve length, springs, seat grinding, spring pocket cuts can all have an effect. No two heads are going to be identical---unless its in CNC production--even then there is tolerances.
I had a set of stock magnum heads that would take just over .500 lift and another set that was to close for me, i just considered it in coil bind just to be safe.
Safest bet here as in any engine build is measure, measure, and measure.
Outcast Dodge guy.
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