[B2fkb0]

Hello
I'm in the process of rebuilding a 69 ohc 6 1 bbl and am adding the sprint cam, intake and exhaust. Is there an aftermarket spring setup that mimics the sprint setup? Thanks for any help.
Dan

[Cammer-6]

closest is the 66 GTO or 421
theres plenty of aftermarket springs with same specs as stock Sprints.
What valves are you using?
keep in mind that installed height plays a part in spring pressures

[B2fkb0]

Originally Posted by Cammer-6

closest is the 66 GTO or 421
theres plenty of aftermarket springs with same specs as stock Sprints.
What valves are you using?
keep in mind that installed height plays a part in spring pressures

I'm planning on reusing the stock 1 bbl valves. Can you share the stock specs? Thanks.
Dan

[Half-Inch Stud]

Spring requirement is remarkably "stock like" for 7500 RPM activity.

[Cammer-6]

Originally Posted by Half-Inch Stud

Spring requirement is remarkably "stock like" for 7500 RPM activity.

since when have you seen stock springs wind up to 7500?

the 250 4 bbl springs were made weak so they would float when revved above 5500.
66-7 was another story

[Half-Inch Stud]

Originally Posted by Cammer-6

since when have you seen stock springs wind up to 7500?

the 250 4 bbl springs were made weak so they would float when revved above 5500.
66-7 was another story

Since the 80's. You do have a point. My Sprint had a 280 degree cam done by MOON. It rev'd fine but I don't know-for-sure that it has stock springs. They looked stock, and original owner never talked about changing springs. The valves were stock. I spun the crap out of it and can say there was no hint of float. Springs I had looked like stock non-ram air 400 springs.

[PMD1969]

Originally Posted by Cammer-6

closest is the 66 GTO or 421
theres plenty of aftermarket springs with same specs as stock Sprints.
What valves are you using?
keep in mind that installed height plays a part in spring pressures

Are the 66 GTO/421 springs you mentioned the same dual springs setup as the OHC sprint? What are the specs of the springs or where would I find that info. Which aftermarket places carry them?