Help me out here folks. In the local salvage yard is a 84 ( I think) Z28 HO. It has a 305 4-barrel carb. The rear is posi with alum. drums. I was wondering if there was a way to tell the ratio without pulling the cover and with no RPO codes.

Thanks,
Jeremy

------------------
92 Z conv
5-spd B&M
alston SFC, few mods, some free, some not

 

Look for an axle code on the front of the right hand tube.

In 84, a 305 f-body with 3.23 gears as standard equipment. A manual transmission had an option of 3.73. The 3.73 was also standard in the HO with manual transmission.

If the car is an automatic then it could be 3.08 or 3.23 and the HO came with 3.42.

------------------
Stephen's racing page

87 IROC-Z Pro ET Bracket Race Car and knocking on the SuperPro ET class
383 stroker (carbed) with double hump cast iron heads and pump gas
454 Big Block buildup now in progress for the 2001 racing season

Best results before the 383 blew up
Best ET on a time slip: 11.857
Best corrected ET: 11.163
Best MPH on a time slip: 117.87
Best corrected MPH: 126.10
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car
91 454SS daily driver
95 Homebuilt Harley

 

thanks man. It is an auto. all well, no 3.73 for me today.

Thanks,
jeremy

------------------
92 Z conv
5-spd B&M
alston SFC, few mods, some free, some not