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VCCA Home Forums TECHNICAL - 1945 AND NEWER 1955-1957 NUMBER FOR VACUUM ADVANCE POWER PACK

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NUMBER FOR VACUUM ADVANCE POWER PACK #197919 02/13/11 02:06 PM
Joined: Mar 2008 Posts: 29 MICHIGAN 67HAPPY57 OP Grease Monkey
OP 67HAPPY57 Grease Monkey Joined: Mar 2008 Posts: 29 MICHIGAN	WHAT IS THE GM NUMBER FOR VACUUM ADVANCE ON A POWER PACK, OR ARE THEY THE SAME FOR 2B OR 4B, OR DOES THE CARBUARTOR MAKES THE DIFFERENTS IN THE ADVANCEMENT. JIM

Wilwood Engineering1955-1957

Willwood Engineering

Wilwood Engineering designs and manufactures high-performance disc brake systems.
Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188

Re: NUMBER FOR VACUUM ADVANCE POWER PACK 67HAPPY57 #197935 02/13/11 06:53 PM
Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi. Chev Nut ChatMaster - 25,000
Chev Nut ChatMaster - 25,000 Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi.	I assume that you have a 1957. The power pac engine vacuum advance is # 1116118. Thr 2 Bbl and 4 Bbl engines have a different advance curve. The 4 bbl has a higher compression ratio and was designed for premeium fuel (in 1957 when octane were lower). I find that my 1957 P.P. does well on todays regular gas inspite of the fact that I advance the timing greater than what the factory called for. Gene Schneider

Re: NUMBER FOR VACUUM ADVANCE POWER PACK Chev Nut #197942 02/13/11 08:22 PM
Joined: Mar 2008 Posts: 29 MICHIGAN 67HAPPY57 OP Grease Monkey
OP 67HAPPY57 Grease Monkey Joined: Mar 2008 Posts: 29 MICHIGAN	THANK YOU Chevgene FOR THE INFORATION. YES I DO HAVE A 57 POWER PACK JIM

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