To VVT or not to VVT

Sorry for all the posts but the beer is full effect and it looks like there isnt enough range to make it happen on the advance side to see if my theory is correct.

Article from Hotrod MagThe Gen IV's VVT system is very flexible and allows advancing the cam 7 degrees and retarding it 45 degrees for a total of 52 degrees of latitude.

Tech note from Comp cams VVT tech bulletin. The difference in the pin between 156 and 189 cores equates to 13 degrees cam retard (if a 156 is used
where a 189 is required). {thinking i have a 156 "type" core installed and with only 7 degrees of advance available in the phaser I am not going to be able to make up the 13 degree difference... Looks like I won't need to call Allen..

Quote:

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Originally Posted by Gus

Sorry for all the posts but the beer is full effect and it looks like there isnt enough range to make it happen on the advance side to see if my theory is correct.

Article from Hotrod MagThe Gen IV's VVT system is very flexible and allows advancing the cam 7 degrees and retarding it 45 degrees for a total of 52 degrees of latitude.

Tech note from Comp cams VVT tech bulletin. The difference in the pin between 156 and 189 cores equates to 13 degrees cam retard (if a 156 is used
where a 189 is required). {thinking i have a 156 "type" core installed and with only 7 degrees of advance available in the phaser I am not going to be able to make up the 13 degree difference... Looks like I won't need to call Allen..

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Vvt is garbage.

Pl4boy I think i remember you saying that you converted yours to non vvt. Could I go down to the 3 bolt style just get the cam sprocket. Ls2 cover and cam bolts right. Was there a different sensor or something like that. Im really thinking I'm moving to that lsr cam

If you can give me a little bit, I'll give you a list of part numbers. I retained a single bolt cam but did remove vvt.

20-12591689 GM SINGLE BOLT CAM SPROCKET
20-12600326 GM LS2/LS3 (Non V.V.T.) FRONT COVER
20-12591720 GM LS2/LS3 CAM SENSOR
20-11561283 CAM BOLT (FOR SINGLE BOLT LS- CAMS)

Cool thanks again.

Just had another thought, If anyone has the earlier style vvt phaser in good condition let me know 12585994, This would put the the right degree phaser with the core I think I have. If it works I may not have to buy a cam..