chevybayboy

iTrader: (6)

Only a few move not all of them I'm going to re measure tomorrow thanks bud

Burken01

iTrader: (88)

Remeasure with cyl # 1 at TDC of compression stroke

chevybayboy

iTrader: (6)

OK will do and let you know what I come up with

JakeFusion

iTrader: (7)

Did you measure with the heads bolted down?

7.300" is way too short for that combo unless you milled .040" off the heads and took .020" off the block.

dr_whigham

iTrader: (49)

Just another quick thought:

I take it you used new lifters as well as trays... Onve you have the cam on the base circle, be sure you take the pushrod and push the lifter into contact with the cam itself. New lifters just love to stick in the trays and not be in contact with the cam itself, and with an adjustable PR checker, you'd never know it.

Anyway, next time you have whatever valve you're checking, be it int or ex, push the lifter into contact with the cam. Step away for a half hour or so, as you've probably collapsed the plunger at that point, and then remeasure.

chevybayboy

iTrader: (6)

Yes I measured with heads bolted down, I think when I added everything up I left out the preload, when I do my measurements and add preload desired I come up with 7.350

chevybayboy

iTrader: (6)

yes I used the comp measure pr and I made sure I push the lifter onto the cam

chevybayboy

iTrader: (6)

Thanks for all the help fellas it's really appreciated.

chevybayboy

iTrader: (6)

Remeasured and that's exactly what it was didn't add preload.. don't know how I didn't, but I'm coming up with 7.350

Burken01

iTrader: (88)

Hmm it's still weird because even with preload at .025 like you had before you should not of been able to shake the PR up and down

Are you torquing the rocker bolt down to 22 ft lbs before measuring for length?

chevybayboy

iTrader: (6)

No I opened the pr 9 1/2 turns, then turned the rocker bolt until it was snug rotated motor 360 rocker was still snug took it out counted turns the added preload

chevybayboy

iTrader: (6)

either I'm over thinking or not getting it right or something at the end of the pr process is it OK if it's only 1 full turn and not 1 1/2 to get to 22ft lbs?

dr_whigham

iTrader: (49)

One full turn is what I was going for, and wound up with when I did it.

There's an argument as to what the OFFICIAL measurement is for preload using that method, but for my LS7 lifters it worked great for me.

chevybayboy

iTrader: (6)

OK thanks, because 1 full turn would be a 7.350 pr, and half a turn with the 7.4 think I'm going to go with the 7.350

JakeFusion

iTrader: (7)

I didn't torque down to check PR length. Just get to 0 lash and take the slack out.

I ended up with 3/4 a turn on my setup, and I only have .058" travel...

chevybayboy

iTrader: (6)

OK, I think I got this thing figured out now

chevybayboy

iTrader: (6)

OK got the correct pr length Burken 01 walked me through step by step I swear dude when I get paid next Friday I'm buying you lunch Lol ended up needing 7.375 prs, sending my trans off Monday hope to have everything back together and running buy the end of Feb

Burken01

iTrader: (88)

What part of the Bay Area you in?

I used to visit San Fran once a year

chevybayboy

iTrader: (6)

I use to live in the bay area all over from Fairfield to San Lorenzo but I moved to Texas about 6 months ago I'm going to send you the money to treatment yourself threw paypal

Burken01

iTrader: (88)

Texas? Nice I was born in Austin..

You don't have to send me money dude! Just enjoy your engine and post some vids!!!