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Discussion Starter #1 (Edited)
I am almost done putting the parts together on my 468 rebuild. I have 13.9:1 JE forged pistons, 781 heads with 2.25 valves, RPM Air gap intake running an 850 E85 modded carb. This will be a 90% street car, full weight, 4 speed close ratio with a 3.08 rear 12 bolt (may upsize the gear if I have to). What would be the best cam to get the most out of this, I dont care about vacuum as I will be running hydroboosted brakes. I love a rough cam but I want something with some decent down low performance. I can do roller if it works out the best but I need some more ideas.

I can appreciate that these may not be the best parts, but I wont be changing any of them any time soon, I just need the best cam to get the most out of what I have.
 

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Discussion Starter #2
any ideas, I have read a lot about lower CR 486's on gas, but the info on more specific high CR E85 motors seems limited based on what I have read so far. Anyone on here have an E85 motor with some recommendations
 

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Discussion Starter #3 (Edited)
thinking somewhere around here as a starting point. I would like roller, not sure I want solid as its going to be on the street pretty much forever.



do you think the 2-1/2" dual exhaust, x-pipe and magnaflows will be ok with this motor setup, or will I have to upgrade to 3"
 

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I would avoid a flat tappet camshaft like the plague.

This type of build needs some thought. A tight lash solid roller, GSP HIPPO lifters and the matching valve spring package would survive some serious abuse. This is done a lot in venues like the Power Tour and Drag Week so you should have any problems using this concept with your build.
 

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Discussion Starter #7
thanks chris, I am setting up a time to have my heads flow benched. Should I have all of the chambers done or is one or two good for a baseline?
 

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It is best to get a couple cylinders flowed. On a BBC you have the long and short intake ports. One of each for an average works just fine. Now if they are drastic in difference you can opt for a cam with 2 intake lobes. One is ground for the short runner and one is ground for the long runner. This was common in the old days of Pro Stock back in the late 70's and early 80's until the symetrical port head designed by John Callies came out.

I just did one for a customer running an iron headed 427 up on Long Island.
 
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