Comp 206/212, Worth the effort in a 4.8?

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Jan 9, 2008 | 09:54 PM

#41

1slow01Z71

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From: Austin, TX

Quote:

Originally Posted by Steve Bryant

A couple of people have mentioned a .550" lift. I'd like to see flow data for a stock head. I'd also like to see dyno data. I cannot imagine that the extra .030' lift buys anything in the real world in terms of torque and power for a daily driver. A few extra CFM at peak lift won't relate much to power and torque.

Steve

Exactly my thoughts along with the cost difference between an 00 fbody cam and a comp or whatever cam. Stock heads on a 5.3 peak around 530 lift or so. There is a gain to be had by going through peak flow twice and staying near the apex of the flow curve but again its not worth it for this app IMO.

Jan 9, 2008 | 10:34 PM

#42

PappyDan

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From: Texas

here you go, 4.8/5.3 LS1 LS6 and the 6.0 heads flow charts.
from 550 to 600 lift shows best results on the flow of the heads.

http://ourworld.cs.com/jrp98ls1/stockheadflow.jpg

no point in playing with dyno software if you have
no data to add in to give results.