uneducated !!
Thread Starter
Pro
Joined: Oct 2004
Posts: 644
Likes: 15
From: Clarksville Tennessee
uneducated !!
Could Someone help educate me. I have a 270HR comp cam. The specs are:
int / ehx
gross lift .474/ .474
duration @.050 .220/ .224
I'm assuming the gross lift specs are based on 1.5 rockers. I have 1.6 rockers on the intake side. I'm thinking this would change my gross lift on the intake side. My question is what would my gross lift be with the 1.6 rockers? Can anyone help me with the calulation?
My last question is about Dyno numbers ...my car put out 278 rwhp and 361 rwtq
(a 383 with a really bad case of TPI ASMA ) . How do I find out my crank or fly wheel horse power? I know there's a certin percentage to deduct. What that percentage is Idon't know
Thank Guys!
int / ehx
gross lift .474/ .474
duration @.050 .220/ .224
I'm assuming the gross lift specs are based on 1.5 rockers. I have 1.6 rockers on the intake side. I'm thinking this would change my gross lift on the intake side. My question is what would my gross lift be with the 1.6 rockers? Can anyone help me with the calulation?
My last question is about Dyno numbers ...my car put out 278 rwhp and 361 rwtq
(a 383 with a really bad case of TPI ASMA ) . How do I find out my crank or fly wheel horse power? I know there's a certin percentage to deduct. What that percentage is Idon't know Thank Guys!
Team Owner
Joined: Sep 2001
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Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
If you have the cam card, you can get the lobe lift (lift at cam), then multiply by 1.5 or 1.6 to get the lift at the valve.
If the lift is given for 1.5, then divide the lift spec by 1.5 to get the lobe lift, then multiply it by 1.6 or whatever ratio you decide to use.
If the lift is given for 1.5, then divide the lift spec by 1.5 to get the lobe lift, then multiply it by 1.6 or whatever ratio you decide to use.
Thread Starter
Pro
Joined: Oct 2004
Posts: 644
Likes: 15
From: Clarksville Tennessee
Got it!! Thanks Vader!!
