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408 ported eddys switching from roller to hyd? #1946514
11/06/15 07:25 PM
11/06/15 07:25 PM
Joined: Jan 2005
Posts: 1,163
Newark, OH
Hunted Duck Offline OP
super stock
Hunted Duck  Offline OP
super stock

Joined: Jan 2005
Posts: 1,163
Newark, OH
Thinking of taking out the roller and putting a small hyd cam in. Don't care about slowing down but wanna make sure it still stays consistent. Runs 10.20s now how much slower you think it would run with something like the .484 or .509 purple shaft cam?

Re: 408 ported eddys switching from roller to hyd? [Re: Hunted Duck] #1946517
11/06/15 07:33 PM
11/06/15 07:33 PM
Joined: Feb 2005
Posts: 20,170
PA.
pittsburghracer Offline
"Little"John
pittsburghracer  Offline
"Little"John

Joined: Feb 2005
Posts: 20,170
PA.
I have a brand new 509 purple shaft that I'll trade if it will make you happy


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




Re: 408 ported eddys switching from roller to hyd? [Re: Hunted Duck] #1946543
11/06/15 08:43 PM
11/06/15 08:43 PM
Joined: Jan 2005
Posts: 1,163
Newark, OH
Hunted Duck Offline OP
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Hunted Duck  Offline OP
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Joined: Jan 2005
Posts: 1,163
Newark, OH
May not go quite that far....lol.

Re: 408 ported eddys switching from roller to hyd? [Re: Hunted Duck] #1947222
11/07/15 10:27 PM
11/07/15 10:27 PM
Joined: Mar 2008
Posts: 883
Affton MO
Q
qwkmopardan Offline
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qwkmopardan  Offline
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Posts: 883
Affton MO
I pulled roller cams out of two different engine and replaced them with solid flat tappet cams and both cars were faster with the flat tappet cam. Slightly faster. I don't think you will go faster with a hyd flat tappet, but I bet you wont slow much, two tenths at the most. I would use the old mopar 509 and put it in 6* advanced.

Re: 408 ported eddys switching from roller to hyd? [Re: Hunted Duck] #1947323
11/08/15 01:04 AM
11/08/15 01:04 AM
Joined: Jan 2005
Posts: 1,163
Newark, OH
Hunted Duck Offline OP
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Hunted Duck  Offline OP
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Joined: Jan 2005
Posts: 1,163
Newark, OH
Thanks for the info Dan. Biggest thing is to make it more consistent. 2 tenths slow wouldn't be bad at all. I was looking at the comp cams hydraulic 519/524. I will check out the .509 too.

Re: 408 ported eddys switching from roller to hyd? [Re: Hunted Duck] #1947421
11/08/15 10:48 AM
11/08/15 10:48 AM
Joined: Mar 2005
Posts: 3,140
Central NC
gch Offline
master
gch  Offline
master

Joined: Mar 2005
Posts: 3,140
Central NC
What about the roller is making it inconsistent?

Re: 408 ported eddys switching from roller to hyd? [Re: Hunted Duck] #1947481
11/08/15 01:18 PM
11/08/15 01:18 PM
Joined: Jan 2005
Posts: 1,163
Newark, OH
Hunted Duck Offline OP
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Hunted Duck  Offline OP
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Joined: Jan 2005
Posts: 1,163
Newark, OH
I'm thinking with the hydraulic I would be taking some power away which should make the 60s more consistent. Ive adjusted and tweaked on the suspension and got it pretty good but just trying to make dead nuts everytime.







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