What springs for modified B.B.??
Thread Starter
Racer
Joined: Mar 2008
Posts: 414
Likes: 130
From: Newcastle California
What springs for modified B.B.??
I am doing a frame off on my 67 B.B. and am changing some things. Many years ago- but a few miles ago I bought some new springs from gm- part # 388251- which I think are reg BB springs. With a 7 leaf in the back I really liked the ride and height was perfect until I tore it apart. Now I am adding a new engine with AL heads, vintage air, tremac trans, AL radiator Al waterpump. So I figure I lost about 100 pounds from the heads, radi, waterpump. But I will gain about 75 pounds from tremac and A.C. Do you think my ride height will be the same??
Le Mans Master
Joined: Nov 2008
Posts: 5,691
Likes: 12
From: columbus oh
I am doing a frame off on my 67 B.B. and am changing some things. Many years ago- but a few miles ago I bought some new springs from gm- part # 388251- which I think are reg BB springs. With a 7 leaf in the back I really liked the ride and height was perfect until I tore it apart. Now I am adding a new engine with AL heads, vintage air, tremac trans, AL radiator Al waterpump. So I figure I lost about 100 pounds from the heads, radi, waterpump. But I will gain about 75 pounds from tremac and A.C. Do you think my ride height will be the same??
Former Vendor
Joined: Aug 2006
Posts: 76,656
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From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
If you are within 25 lbs of the original weight you should not see any difference in the ride height of the car.
The spring you have is the 3888251 spring and was the big block air spring.
3888250 was the non air spring. I'll bet it sits a little high in the front end with the air spring before your mods.
This is a pretty stout spring and it would take a pretty large difference +/- to make a ride height change.
Willcox
The spring you have is the 3888251 spring and was the big block air spring.
3888250 was the non air spring. I'll bet it sits a little high in the front end with the air spring before your mods.
This is a pretty stout spring and it would take a pretty large difference +/- to make a ride height change.
Willcox
