Distance from coil bind help

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Apr 24, 2023 | 10:53 AM

Lq4c10

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Distance from coil bind help

I have BTR dual 660 valve springs and I measured my spring install height at 1.77
BTR says coil bind is 1.070 and my cam is 232/234 .600/.600

does this work out to 0.107 from coil bind and is that ok?

Apr 24, 2023 | 08:17 PM

Jake Wade

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From: Louisiana

I get .100 from coil bind from your numbers. That will work for you as long as retainer to seal clearance is good.

Apr 24, 2023 | 08:40 PM

Lq4c10

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Quote:

Originally Posted by Jake Wade

I get .100 from coil bind from your numbers. That will work for you as long as retainer to seal clearance is good.

sorry, should have been 1.777 install height. Any need to shim?

Apr 25, 2023 | 05:20 AM

Jake Wade

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From: Louisiana

Quote:

Originally Posted by Lq4c10

sorry, should have been 1.777 install height. Any need to shim?

If you are looking for a certain seat pressure.
What are the advertised spring installed height and rate numbers?

Apr 25, 2023 | 06:22 AM

Lq4c10

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Quote:

Originally Posted by Jake Wade

If you are looking for a certain seat pressure.
What are the advertised spring installed height and rate numbers?

what seat pressure should I be looking for?Spring specs are as follows:

•155 lbs @ 1.780"

•380 lbs @ 1.180"

•400 lbs @ 1.130"

•Coil bind @ 1.070"

Apr 25, 2023 | 09:56 AM

Jake Wade

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From: Louisiana

Not sure exactly what you are doing, what lifters, what camshaft core material.

The seat/open pressures look good for a hydraulic roller hot street deal.

I would run it as is. No shimming.

Apr 25, 2023 | 10:43 AM

Lq4c10

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Quote:

Originally Posted by Jake Wade

Not sure exactly what you are doing, what lifters, what camshaft core material.

The seat/open pressures look good for a hydraulic roller hot street deal.

I would run it as is. No shimming.

btr ls7 lifters.
Everything I can find it pointing to good
appreciate you help, first timer here