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Old 11-16-2012, 11:55 PM
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vinniekq2 vinniekq2 is offline
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It can be done.The stock valve springs are fair and if you keep the lift moderate and dont use a cam with aggressive ramping you can get an improvement.
Yes Ive built budget engines. When we raced claimers, cheap was the only thing to do.
I would get used valve springs from guys running big cams,when they freshen the engine I would mix and match used after market springs. for small blocks,GM offered z-28 off road springs dirt cheap in the 70s,bought 8 sets. to get more rpm used those springs and just the centre from the retainers,
used after market cams and GM lifters

even stacked shims for low lift /long duration cams using stock ish springs.
Now days with all the good parts available and Im older,I use quality parts.

13s should be no problem for you,especially with a 454
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