You are here:

Chevrolet/valve train

Advertisement

Expert: Roger J.M. Warrington - 8/22/2005


Question
Hi Rodger, I would like to know if changing the stock rocker arms 1.5 ratio to 1.6 would be a benefit to street performance on this 1968 chevy 327cu.in.-.030 over-flat top pistons-GM 292heads with 202/160 valves-Edelbrock Performer "EPS" manifold-Holley 670 carb.-Mallory CD ignition box-coil+Dist.-Clevite Cam #229-1730-Adv.Duration Int.270-Exh.280-Gross Lift Int.420-Exh. 443.  PS. Are there any changes yuo would make to this combo.  Thank You rick

Answer
HI Rick; Yes if you change the rockers it will not hurt and they should be a bit better, I would look into a larger carb on what you have and a elec. fuel pump. and you did not say if you have headers on it, if not put them on and you will see a big differnce.and a rear end would not hurt.
good luck
roger

Chevrolet

All Answers

Ask Experts

Volunteer

Roger J.M. Warrington

Expertise

I can help you with most standard type things from 1955 chevys up to around 1975 (1975)>> chevys in differnt areas. engine work heads-cams-trannys-drive train-brakes-some elect. dos and donts. PS UP TO 1975 !! !!!!!!!!!!! I will try with any others after that date. state up to 1975 but I still get 2006-007 etc. I guess you do not read this far ! !

Experience

All i can remember growing up is working on cars and making them loud and fast , and when i started to make money i would sink all of it into my cars so i could get them to go faster and look great. what else is there !I would love a challange to trouble shoot, as it is fun finding what is wrong when all others can not .ON the older cars not past 1975s , etc. so please I will try to help with the newer cars but do not grade me bad if I can not help your 2006 car.etc.

©2012 About.com, a part of The New York Times Company. All rights reserved.