Torque converter question

Cary

New Member
Nov 2, 2014
13
Broken Arrow OK
I have a '73 Z28. Has a stock turbo 350 and 308 gears. At 60 mph I turn 3000 rpm. Could my converter be bad? The rpm's seem way high for the gears. 26inch tall tires.
 

Mike Bozung

Veteran Member
Jul 7, 2011
144
muncy,pa
Cary, I think it's slipping, because my '79 Camaro had 308 gears & a 350 and I was taching 2800 at 70mph. I was burning up alot more gas then I should have been. So I swiched to 2:41 gears, now I'm at 2200 rpm's @ 70mph. So yeah, I think you have a problem. Could be the converter or trans.
Mike
 

Cary

New Member
Nov 2, 2014
13
Broken Arrow OK
That's what I'm thinking. I know the tach can be off but the engine is screaming at 65mph. I have a '71 C10 and it doesn't sound as wound up at 70 as the Z at 60. I know it's not a perfect comparison but makes me think somethings not right. The transmission seems to shift fine. That's why I'm thinking converter. I just have never had this issue so I'm not sure.
 

GoldenOne7710

Equal Opportunity Offender
Lifetime Gold Member
Jun 23, 2004
5,707
Athens, GA
You verified the gear ratio is correct? By that I mean, you KNOW how many teeth are on the ring and pinion? Or are you going off a different source?
 




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