23° tunnel rammed 421 sbc dyno
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23° tunnel rammed 421 sbc dyno
Engine is at the shop waiting to be dynoed...
As a refresher, there are pics of flow numbers and the cam specs. Cam was degreed to intake valve open and the ICL fell on 110
Braswell 4760 carbs, I can't remember the sizes (can update) but I'm pretty sure they're their version of 750s..
SHP block, .904 bam solid rollers, 11.3:1 compression, 93 octane pump gas, 1.7/1.6 rockers
Anyone want to guess at a power number?
I have a number in mind. Based on the goal of this cam, it's not a power number that even needs a tunnel ram and braswells to get lol, but the goal was to have enough power and reliability to successfully complete-not necessarily place in-a drag week, without incident. That's my goal at this stage, just to successfully complete one. I already have Jones specs for a "watch out" HP cam to go in next.
As a refresher, there are pics of flow numbers and the cam specs. Cam was degreed to intake valve open and the ICL fell on 110
Braswell 4760 carbs, I can't remember the sizes (can update) but I'm pretty sure they're their version of 750s..
SHP block, .904 bam solid rollers, 11.3:1 compression, 93 octane pump gas, 1.7/1.6 rockers
Anyone want to guess at a power number?
I have a number in mind. Based on the goal of this cam, it's not a power number that even needs a tunnel ram and braswells to get lol, but the goal was to have enough power and reliability to successfully complete-not necessarily place in-a drag week, without incident. That's my goal at this stage, just to successfully complete one. I already have Jones specs for a "watch out" HP cam to go in next.
Last edited by 54chevkiwi on Sat May 06, 2023 6:18 pm, edited 1 time in total.
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Re: 23° tunnel rammed 421 sbc dyno
Sorry the cam one is sideways
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Re: 23° tunnel rammed 421 sbc dyno
Catch can will mount to coil over shock tower on that side so there he hangs for the pic
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Re: 23° tunnel rammed 421 sbc dyno
My home done valve spring oilers... Send oil to the front distributor drive, tap turns off the covers for lash adjustment
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Re: 23° tunnel rammed 421 sbc dyno
590 ft/ lbs @ 5300rpm
786 hp @ 7000rpm
786 hp @ 7000rpm
steve c
"Pretty don't make power"
"Pretty don't make power"
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Re: 23° tunnel rammed 421 sbc dyno
I dunno, I'm kind of expecting 720. I think it'll definitely go 720, but won't be 750, so I think if it goes that high I'll plotz ....
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Re: 23° tunnel rammed 421 sbc dyno
My bad, I guess that info cut off the flow sheet. Eric Weingartners 248cc wing dragon slayers, 2.125/1.575 valves, 2.8 CSA
Re: 23° tunnel rammed 421 sbc dyno
The camshaft is way too short. It will run vrry nicely but not up to your goal using that cam. These is a lot more in it with the right camshaft.