Highest rwhp from NA fbody???
10 Second Club
Joined: May 2009
Posts: 3,427
Likes: 226
From: over dere
Ima give a mild build 346 a whirl after this water in the oil bad luck with the ls7. I don't have the budget for a set of these mamo heads but i still think somewhere around 550whp can be done. After all the bolt on ls6 did 451whp so a decent compression bump, a Darth spec'd cam and some ported 243s should get 100hp i think.
TECH Fanatic
Joined: Aug 2009
Posts: 1,845
Likes: 255
From: Coast of San Mateo County Between Pacifica & HMB
Yes. The first post in that ghost hawk build thread is where I ended up. I kept it updated with everything. But its worth reading the whole thread, because beyond the mods, I posted every mistake I made. There are a lot of nuggets in that thread beyond the list of parts. I do think there may have been another 20 or so HP, but I was not going to get it. I was losing compression and on disassembly I found hot spots on the bearings. My rings were not badly worn but they had no spring in them anymore.
Be cool if you did beat it. Mixed emotions for me though. Lol
Honest question -- you think the mast small bores might beat the Mamo 220? I kind of doubt it myself.
That thing really was a badass 346.
Be cool if you did beat it. Mixed emotions for me though. Lol
Honest question -- you think the mast small bores might beat the Mamo 220? I kind of doubt it myself.
That thing really was a badass 346.
You absolutely had the best performing Streetable SBE 346" that I have seen on Tech
in the over 12 years that I have been following. The "easiest" way LOL!
to surpass that would be to duplicate (You so generously provided the full details)
add .5 Compression, .020" lift, +3-4* of cam durations with the correct events.
Not to original however.
I believe the MMS 220s are the best Heads for a 3.9" Bore, especiall factoring the
port & valve sizes, compared to the Mast Small Bore LS3 which are 240 CCs as
you know. However I believe the FAST LS3 W/ Mid-Length Runners are Ideal to
provide peak HP between 7000-7500 RPM, and while you definitively proved the
MSD peaked & carried beyound the FAST 102 Cathedral. I Believe the MID-Length
peaks and carries beyound the MSD, Unfortunately we can't compare with the
same Heads.
My initial post was in no way ment to disparage your results.
It was just a different idea on how to possibly exceed 550 RWHP with a
"streetable" SBE 346" and a extreme budget.
Last edited by NAVYBLUE210; Dec 17, 2018 at 10:44 PM.
Oh that's a great point about the intake options. And you're right. Go to 12.x compression, add cam, should beat it. Would require flycut. I would not push it any tighter than where I was on PTV.
I didn't take any offense or anything. I was honestly just asking your opinion
I didn't take any offense or anything. I was honestly just asking your opinion
On The Tree
Joined: Jan 2004
Posts: 166
Likes: 2
From: Bahrain
The trick is to invest in making the vehicle extremely light weight... one of the fbodies i am talking about showed up lower 2400lbs
and a fox body with a stock cube na ls1 ran 9.3 with 2150lbs with some patriot 243's, vic jr intake a hyd roller cam... You will be surprised how many stock 346ci have achieved lower than 9.6x in stock bottom ls1.. not everyone posts this in the forums. as a matter of fact, some of them dont even have that high of a compression and running ported 243's.
The trick is to invest in making the vehicle extremely light weight... one of the fbodies i am talking about showed up lower 2400lbs and a fox body with a stock cube na ls1 ran 9.3 with 2150lbs with some patriot 243's, vic jr intake a hyd roller cam...
The trick is to invest in making the vehicle extremely light weight... one of the fbodies i am talking about showed up lower 2400lbs
and a fox body with a stock cube na ls1 ran 9.3 with 2150lbs with some patriot 243's, vic jr intake a hyd roller cam... You will be surprised how many stock 346ci have achieved lower than 9.6x in stock bottom ls1.. not everyone posts this in the forums. as a matter of fact, some of them dont even have that high of a compression and running ported 243's.
The trick is to invest in making the vehicle extremely light weight... one of the fbodies i am talking about showed up lower 2400lbs and a fox body with a stock cube na ls1 ran 9.3 with 2150lbs with some patriot 243's, vic jr intake a hyd roller cam...
The trick is to invest in making the vehicle extremely light weight... one of the fbodies i am talking about showed up lower 2400lbs
and a fox body with a stock cube na ls1 ran 9.3 with 2150lbs with some patriot 243's, vic jr intake a hyd roller cam...
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Thread Starter
Teching In
Joined: Nov 2018
Posts: 11
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From: Newfoundland
BTR stage 4 cam
Trick flow 215 CNC heads
Msd atomic Airforce
nick Williams 102
Johnson 2110 lifters
Carillo Pistons
Scat rods
Yella terra 1.7
ferrea valves
Meziere ewp
100 maf
SSRA intake
SE 1 7/8 LT
SE 3" true dual
Trick flow 215 CNC heads
Msd atomic Airforce
nick Williams 102
Johnson 2110 lifters
Carillo Pistons
Scat rods
Yella terra 1.7
ferrea valves
Meziere ewp
100 maf
SSRA intake
SE 1 7/8 LT
SE 3" true dual
On The Tree
Joined: Dec 2008
Posts: 101
Likes: 25
