Lot of experienced W5 guys on here,so let's hear it. Only guidelines- E-85,solid roller cam,4.030 max bore,4"max stroke.
Parts already have: new W5 heads(going to RyanJ max effort port job),x-block,large runner intakes(4150 and 4500),1050cfm 4150 e85.
Going in '70 dart,weight w/driver 2850, 904w/brake,lt.weight 8.75,caltrac/mono,10.5x30 tire.

list looked pretty good until you listed that 8.75 rear. Our W5 mill is not a max effort and we broke gears and twisted axles with ours. Put a Dana in last year. So far our "best" is a 9.87 at 136 IIRC. This is in my dads 70 Duster which weighs right around 3k w/t driver.

....wish we had your block!

Welcome to the jungle.... see what Ryan has to say...
any idea of compression yet... looks good so far...
on the 8 3/4 is it back braced and does it have after
market caps(at least 1 on the load side)... with that
weight it shouldnt be a problem... at least I dont have
a problem, but now days I run the alum 8 3/4

Talk to RJ about angle milling and 0 deck flat tops, I think he has gone to 42 cc from a 60 cc w5 heads, makes a lot of compression

Thanks for replies! Lots of knowlege on here, been reading a few years. Had to sign up when old arc/w5 dyno post came up.
8.75 backbrace, alum ctr,mw alum spool and superlight axles = $$$pent, its what I'm going with.
Actually think theres another 100lbs to get out(started as fun project but has gotten way out of hand) How did that happen?
Ryan's the man. When bought carb,compression thoughts where 13.5 but think we can go way more if don't lug @ low rpm's. Don't know max for e85.
Think this is balancing act/not overpower 10.5 tire but good 60ft and pull hard rest of way.
Looking for info on how to do things better!

When you're ready to do something, just give me a call.

2.08"/1.60" W5's Ported.....
Cam in the 276/280 @ .050" range with around .710-.720 lift, 108 LSA...

The 4150 M1 With a 1" HVH spacer...

As much compression as you can afford to put in it....

Probably do HS rockers so you don't have to pushrod oil, which will be a pain in the X block unless it's bushed.

When bought carb,compression thoughts where 13.5 but think we can go way more if don't lug @ low rpm's. Don't know max for e85.
Think this is balancing act/not overpower 10.5 tire but good 60ft and pull hard rest of way.
Looking for info on how to do things better!

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I'm at 14.1:1 with E-85, one of the guys on here has
15 something on his hemi with E-85... my cam has a
112 lsa installed at 108