Will it hit 450 whp
11-13-2018, 12:32 AM
#81
TECH Senior Member
WHOA, those GMPP cathedral ports be HUGE! Well, for a cathedral, anyway. I didn't know anyone was hogging out cathedrals so much. Yeah that might be an interesting test!
11-13-2018, 07:31 AM
#82
Moderator
iTrader: (4)
Join Date: Jul 2014
Location: My own internal universe
Posts: 10,446
Received 1,838 Likes
on
1,146 Posts
Ls3 will destroy them.
11-13-2018, 08:51 AM
#83
10 Second Club
11-13-2018, 08:53 AM
#84
10 Second Club
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
11-13-2018, 04:50 PM
#85
ModSquad
iTrader: (6)
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
11-13-2018, 08:01 PM
#88
10 Second Club
11-13-2018, 08:57 PM
#89
ModSquad
iTrader: (6)
11-13-2018, 09:15 PM
#90
ModSquad
iTrader: (6)
11-13-2018, 09:22 PM
#91
11-13-2018, 09:24 PM
#92
ModSquad
iTrader: (6)
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.
11-13-2018, 09:28 PM
#93
10 Second Club
11-13-2018, 09:32 PM
#94
ModSquad
iTrader: (6)
...and this was one of those pieces of info I swore to myself I’d never share. Good thing I like you guys.
11-13-2018, 10:35 PM
#95
10 Second Club
11-14-2018, 10:21 AM
#96
11-14-2018, 10:53 AM
#97
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.
