Will it hit 450 whp
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From: over dere
10 Second Club
Joined: May 2009
Posts: 3,427
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From: over dere
would be interesting to see on a 4” bore. See what the shrouding issue really means.
And as far as the shrouding issue, I’ve heard of guys squishing the Head dowls a bit to shuffle the head over to get the valve further from the cylinder wall. Really on a 4.030 engine you’d only have to shuffle the head over .015” to match a 4.060 bore
And as far as the shrouding issue, I’ve heard of guys squishing the Head dowls a bit to shuffle the head over to get the valve further from the cylinder wall. Really on a 4.030 engine you’d only have to shuffle the head over .015” to match a 4.060 bore
would be interesting to see on a 4” bore. See what the shrouding issue really means.
And as far as the shrouding issue, I’ve heard of guys squishing the Head dowls a bit to shuffle the head over to get the valve further from the cylinder wall. Really on a 4.030 engine you’d only have to shuffle the head over .015” to match a 4.060 bore
10 Second Club
Joined: May 2009
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From: over dere
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LS and BBC are same dowels. Moroso makes a set of dowels for BBC offset .030” that work like a glove. I’m always buying stuff like this and doing mockups/measurements. No more “shrouding” issues fellas.
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From: over dere
I crush the dowels. With the parting line at 12 o’clock, I squeeze on the 3 and 9 o’clock sides with a set of pliers, then install them in the block with the parting line pointing up towards the lifters. I think you can get .015” or .020” before having to slot the head or intake bolt holes.
Motion seconded
Last edited by 00pooterSS; Nov 14, 2018 at 12:25 PM.
I’ve never dyno’d just that one change. It’s really going to depend on if and how badly the intake valve is shrouded. As far as coolant passages, it’s not enough to restrict coolant flow throigh the little holes in the head gasket.