Login    Forum    Search    FAQ

Board index » Racing Forum » Engine & Cylinder Head Tech




Post new topic Reply to topic  [ 1 post ] 
Author Message
 Post subject: dyno testing
 Post Posted: Tue Jun 28, 2011 11:25 pm 
Offline

Joined: Sat Feb 24, 2007 6:55 pm
Posts: 847
Location: NW MO.
I will be dynoing a 383 sbc in the next week or two. I have two solid roller cams to use for testing.
The engine is 4.03” bore x 3.75 stroke, 11.3 compression, single plane intake, single carb.
The pulls will be from 2500-6500 rpm.

One cam is 232/240 109lsa the other is 240/245 on 107lsa

The main goal of this dyno session will be to determine a direction to go with the cam.

This engine has a belt drive for easy cam position changes, so both cams can be advanced/retarded quickly.

Our plan is to advance/retard both cams, and do tighter valve lash and looser valve lash on both cams.

The larger cam is in the engine to start with due to checking valve to piston clearance, so testing will start with it.

In “general” what order would you do this in?

And will a loose lash and tight lash need to be tested with the cam advanced and retarded regardless of the results seen from the first tests? (IE gains power with tighter lash on ex and intake when tested separately still needs tested with loose lash?)

What other suggestions for testing do you recommended?


What else should be sorted first? Headers intake etc?

_________________
Slow racing is better than no racing!

Randy


Top 
 Profile  
 
Display posts from previous:  Sort by  
 
Post new topic Reply to topic  [ 1 post ] 

Board index » Racing Forum » Engine & Cylinder Head Tech


Who is online

Users browsing this forum: No registered users and 5 guests

 
 

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to: