R3W7 Assembly

So, tomorrow I take the block in to get bored and honed.


Ordered the remainder of the valvetrain today after talking to Isky. These heads use a 2.00" installed height, so I went with the 9985RAD springs; these are their 'toolroom' steel springs. I used these as I had a few guys tell me they last and last and last. I discussed the pressures of 245/600lbs and Isky said that 600lbs was heavy but not super-heavy. They're using 1000lbs springs pretty commonly now. I should note that even 600lbs is about 200lbs more than recommended by the various Mopar books I have. I mentioned this and they said, "Those guys are 20 years behind the times" lol.

The retainers are their 92-ST, which are also 'toolroom' steel and are only a tiny bit heavier than titanium. I used these as I am not wild about the long term prospects of titanium retainers.

The locks are VL-700, which are their 7 degree chrome moly steel locks. The Isky guys told me 7 degree locks are their top choice; they sell 10 degree locks to stay in the market but their own testing shows 7 degree locks are best. They did qualify this with the usual 'as long as you're not buying junk parts".

Valve pocket locators are Isky 800-VSL; these work on the W7 head with the 1.565" pocket size.

Shim kit #8, 72 shims in 3 different thicknesses will allow me to set the final compressed height where I want it.

Last, Crower .090 deep lash caps.

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i used those exact roller springs on my W5 heads.
245/600 pressures, 273/280 comp roller that Dwayne specced. 699/672 lift with 1.6 Jesel sportsman rocker gear.
Shifted it at 7, trapped at 7500. Had hundreds of passes on those springs. 9.80 car that weighed 3350 with me in it.
Springs still checked fine at freshen up. Reran them, were still on car when i sold it. Very nice pieces.