shift to early
April 14th, 2011, 09:05 AM
#1
Registered User
Thread Starter
Join Date: Nov 2008
Posts: 40
shift to early
hello olds-guys,
is long ago i was here in the forum.
i tune last 2 years my 403cui from my 1978 olds delta88 coupe.
72-350 heads, mondello crane, edelbrock manifold+carburetor and a torque converter 2200-2400 stall speed.
now i have the problem - when i drive or i take the kick down the engine gives more speed but than shift the transmition to early.
what or where i can adjust the shift-time on my transmission.
cool when you can help me.
best regards from germany
michael
is long ago i was here in the forum.
i tune last 2 years my 403cui from my 1978 olds delta88 coupe.
72-350 heads, mondello crane, edelbrock manifold+carburetor and a torque converter 2200-2400 stall speed.
now i have the problem - when i drive or i take the kick down the engine gives more speed but than shift the transmition to early.
what or where i can adjust the shift-time on my transmission.
cool when you can help me.
best regards from germany
michael
April 14th, 2011, 01:50 PM
#2
same but different
Join Date: Jun 2007
Location: Central Missouri
Posts: 2,880
Michael,
The transmission modulator valve can sometimes be adjusted, if not you might be able to purchase an adjustable valve. This will allow a small adjustment in shift points.
You might have to have the transmisson governor looked at or replaced also. This device is the main controller of shift points.
Good Luck.
The transmission modulator valve can sometimes be adjusted, if not you might be able to purchase an adjustable valve. This will allow a small adjustment in shift points.
You might have to have the transmisson governor looked at or replaced also. This device is the main controller of shift points.
Good Luck.
April 15th, 2011, 09:50 AM
#5
Registered User
Thread Starter
Join Date: Nov 2008
Posts: 40
hell...o and thanks for your answers.
i dont think is a vacum leak problem. the car is good shift but after the tuning bring the engine more power in the middle and high rpm and it is also more as 1 to 3 miles/hour.
i must look what the governor is - and check that with my friend (mechanics).
best regards from germany
i dont think is a vacum leak problem. the car is good shift but after the tuning bring the engine more power in the middle and high rpm and it is also more as 1 to 3 miles/hour.
i must look what the governor is - and check that with my friend (mechanics).
best regards from germany
April 16th, 2011, 06:52 PM
#6
Registered User
Join Date: Jan 2010
Location: central Indiana
Posts: 5,402
The governor is behind a round cover on the pass side of the case. If it shift sooner than u want at wot you will need to make some changes to the weights and springs. B&M sells a kit to change shift points along with instructions.
April 22nd, 2011, 03:29 AM
#8
Registered User
Thread Starter
Join Date: Nov 2008
Posts: 40
now shift better
hell...o,
i look to the vacuum modulator and it is a adjustable modulater.
than i drill the screw 2.5 rounds in - and now the shift timing is very good.
now i dont must change the governor.
but thanks for your experience all guy you answer me.
thanks and have a fast drive time.
i know my delta88 is not a light car but now runs maybe very good.
fast regards mutzi from germany
i look to the vacuum modulator and it is a adjustable modulater.
than i drill the screw 2.5 rounds in - and now the shift timing is very good.
now i dont must change the governor.
but thanks for your experience all guy you answer me.
thanks and have a fast drive time.
i know my delta88 is not a light car but now runs maybe very good.
fast regards mutzi from germany
Thread
Thread Starter
Forum
Replies
Last Post
hvysupreme
Cutlass
5
February 18th, 2017 12:40 PM
Alocatelli
Transmission
7
December 10th, 2012 07:49 AM
