GMH94Z28

Can this one be used on the 26918-16 beehive valve springs? I am in need of one but dont want to pay 71.00 for one. Thanks
http://store.summitracing.com/partde...5&autoview=sku

SS RRR

I think Javier ran into this same problem. Not sure what he did. I think he bought one that actually worked. PM him (moderator of this forum).

GMH94Z28

Is there anyone in the memphis area that has one that i can borrow for a day or so?

cehan

When I did mine, I used a standard valve spring height mic (Pro Tools, I think) but I had to deduct 0.148 in. from all my readings to correct for the amount the beehive retainer sits below the top of the tool. (I measured the recess in the top of the tool with a depth mic to determine the 0.148 in.)

96flame

Yes that one will work. As said above you will need to measure the recess at the top and subtract that from the reading to get actual. The Comp "beehive" mic will not work on the LT1 beehive retainers because the valvestem is larger and the retainer won't fit into the gauge. I reamed mine out to be able to use it but save yourself the money and by a standard spring mic.

GMH94Z28

Thanks for the info. Someone recommended that i take them to a local performance shop and have them mic them for me i may look into that option.

cehan

So you have the heads off the engine? Anyway, the cost of having a speed shop do the work will probably run you more than the price of the mic, and you won't know if its done right.

Airbornec507

I just put a shim on top of the mic and deducted the shim height from my readings. Easy to do and very accurate without having a mic for beehives and standard GM springs.

GMH94Z28

I ordered the Proform 66903 from summit yesterday. I will give it a try. Thanks for your responses.