Frankenstein Monster M311 Heads or Others?
07-06-2020, 11:28 PM
#1
Staging Lane
Thread Starter
Frankenstein Monster M311 Heads or Others? Hello Everyone,
If I posted in the wrong area, please forgive me, I'm new on the forum.
I have a 2002 Camaro SS that's getting a built LS3 416 NA motor with 12:2:1
The heads recommended were the Frankenstein Monster Series M311.
Unfortunately these are minimum 8 weeks out and my 416 is set to be complete within 3 weeks.
Are there any other heads that are recommended or comparable to these?
If I had more time I wouldn't mind waiting and I spoke with FED today and got word that there's no chance of getting them any sooner.
If I left out any important info that's needed for a recommendation I apologize in advance. Super new to car builds.
Thanks in advance!
If I posted in the wrong area, please forgive me, I'm new on the forum.
I have a 2002 Camaro SS that's getting a built LS3 416 NA motor with 12:2:1
The heads recommended were the Frankenstein Monster Series M311.
Unfortunately these are minimum 8 weeks out and my 416 is set to be complete within 3 weeks.
Are there any other heads that are recommended or comparable to these?
If I had more time I wouldn't mind waiting and I spoke with FED today and got word that there's no chance of getting them any sooner.
If I left out any important info that's needed for a recommendation I apologize in advance. Super new to car builds.
Thanks in advance!
07-07-2020, 12:32 AM
#2
If you can't wait, i'd buy these if they're available sooner...
https://www.texas-speed.com/p-3948-p...ore-heads.aspx
Precision Race Components LS7 CNC 265cc ported cylinder heads.
Click Here to SEE why we build better heads!
MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!
The PRC Small Bore LS7 cylinder heads are designed for both stroker, and stock cube applications with a 4.060"-4.100" bore. For bores larger than 4.100" bore checkout the PRC LS7 265cc & 285cc cylinder heads!
The PRC LS7 cylinder heads are available with hollow-stem intake and titanium intake valves. We recommend no more than .625" total intake valve lift with the hollow-stem intake valves and no more than .670" total valve lift with the titanium intake valves.\
PRC 265cc LS7 Intake flow / Exhaust flow
Superflow 600
.500 348 221
.600 380 230
.650 383 235
.700 388 240
https://www.texas-speed.com/p-3948-p...ore-heads.aspx
PRC LS7x 265cc CNC Small Bore Heads
Requires at least a 4.065" BorePrecision Race Components LS7 CNC 265cc ported cylinder heads.
Click Here to SEE why we build better heads!
MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!
- PRC 6-Bolt LS7 Cylinder Heads with Thicker Deck Surface
- Will Work on Both Standard GM 4-Bolt & Aftermarket LSx / RHS 6-Bolt Style Engine Blocks
- 2.205"/1.59" Valves
- TSP .660" Dual Spring Kit w/ PAC Springs, Retainers, Seats, & Seals
Springs, Titanium Retainers, Seats, & Seals - CHE Bronze Guides
- Completely Assembled & Setup To Your Specs
- Available With Stainless Steel, Hollow-Stem, or Titanium Intake Valves
- 68cc Chamber Size as Standard
The PRC Small Bore LS7 cylinder heads are designed for both stroker, and stock cube applications with a 4.060"-4.100" bore. For bores larger than 4.100" bore checkout the PRC LS7 265cc & 285cc cylinder heads!
The PRC LS7 cylinder heads are available with hollow-stem intake and titanium intake valves. We recommend no more than .625" total intake valve lift with the hollow-stem intake valves and no more than .670" total valve lift with the titanium intake valves.\
PRC 265cc LS7 Intake flow / Exhaust flow
Superflow 600
.500 348 221
.600 380 230
.650 383 235
.700 388 240
Last edited by Launch; 07-07-2020 at 12:56 AM.
07-07-2020, 03:43 AM
#3
After reading your first post with the engine and the type of driving you will be doing, I would go with an AFR 230cc head from Mamo.
This will give you a snappy and responsive street engine with plenty of torque at all RPM with excellent part throttle acceleration and under the curve power.
You will also make between 500-550rwhp with a well setup combination through a Fast 102mm intake.
The small bore LS7 suggestion is good too but it won't give you the same low and mid range response as the cathedral but it will make a bit more top end though depending on how high you rev the engine.
Either one will work but you need to decide what you are willing to sacrifice.
This will give you a snappy and responsive street engine with plenty of torque at all RPM with excellent part throttle acceleration and under the curve power.
You will also make between 500-550rwhp with a well setup combination through a Fast 102mm intake.
The small bore LS7 suggestion is good too but it won't give you the same low and mid range response as the cathedral but it will make a bit more top end though depending on how high you rev the engine.
Either one will work but you need to decide what you are willing to sacrifice.
The following users liked this post:
DualQuadDave (10-07-2020)
07-07-2020, 10:31 AM
#4
Staging Lane
Thread Starter
After reading your first post with the engine and the type of driving you will be doing, I would go with an AFR 230cc head from Mamo.
This will give you a snappy and responsive street engine with plenty of torque at all RPM with excellent part throttle acceleration and under the curve power.
You will also make between 500-550rwhp with a well setup combination through a Fast 102mm intake.
The small bore LS7 suggestion is good too but it won't give you the same low and mid range response as the cathedral but it will make a bit more top end though depending on how high you rev the engine.
Either one will work but you need to decide what you are willing to sacrifice.
This will give you a snappy and responsive street engine with plenty of torque at all RPM with excellent part throttle acceleration and under the curve power.
You will also make between 500-550rwhp with a well setup combination through a Fast 102mm intake.
The small bore LS7 suggestion is good too but it won't give you the same low and mid range response as the cathedral but it will make a bit more top end though depending on how high you rev the engine.
Either one will work but you need to decide what you are willing to sacrifice.
Thanks Bortous, I'd much rather have that low to mid range response. I'd rarely be at WOT or anywhere near peak. Ill definitely look into those and was already planning to go with the fast 102 also.
Super bummed about the frankenstein heads. I really wanted them. But it doesn't look like I'll be able to have them in time.
07-07-2020, 10:32 AM
#5
Staging Lane
Thread Starter
If you can't wait, i'd buy these if they're available sooner...
https://www.texas-speed.com/p-3948-p...ore-heads.aspx
Precision Race Components LS7 CNC 265cc ported cylinder heads.
Click Here to SEE why we build better heads!
MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!
The PRC Small Bore LS7 cylinder heads are designed for both stroker, and stock cube applications with a 4.060"-4.100" bore. For bores larger than 4.100" bore checkout the PRC LS7 265cc & 285cc cylinder heads!
The PRC LS7 cylinder heads are available with hollow-stem intake and titanium intake valves. We recommend no more than .625" total intake valve lift with the hollow-stem intake valves and no more than .670" total valve lift with the titanium intake valves.\
PRC 265cc LS7 Intake flow / Exhaust flow
Superflow 600
.500 348 221
.600 380 230
.650 383 235
.700 388 240
https://www.texas-speed.com/p-3948-p...ore-heads.aspx
PRC LS7x 265cc CNC Small Bore Heads
Requires at least a 4.065" BorePrecision Race Components LS7 CNC 265cc ported cylinder heads.
Click Here to SEE why we build better heads!
MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!
- PRC 6-Bolt LS7 Cylinder Heads with Thicker Deck Surface
- Will Work on Both Standard GM 4-Bolt & Aftermarket LSx / RHS 6-Bolt Style Engine Blocks
- 2.205"/1.59" Valves
- TSP .660" Dual Spring Kit w/ PAC Springs, Retainers, Seats, & Seals
Springs, Titanium Retainers, Seats, & Seals - CHE Bronze Guides
- Completely Assembled & Setup To Your Specs
- Available With Stainless Steel, Hollow-Stem, or Titanium Intake Valves
- 68cc Chamber Size as Standard
The PRC Small Bore LS7 cylinder heads are designed for both stroker, and stock cube applications with a 4.060"-4.100" bore. For bores larger than 4.100" bore checkout the PRC LS7 265cc & 285cc cylinder heads!
The PRC LS7 cylinder heads are available with hollow-stem intake and titanium intake valves. We recommend no more than .625" total intake valve lift with the hollow-stem intake valves and no more than .670" total valve lift with the titanium intake valves.\
PRC 265cc LS7 Intake flow / Exhaust flow
Superflow 600
.500 348 221
.600 380 230
.650 383 235
.700 388 240
07-07-2020, 10:35 AM
#6
Thanks Bortous, I'd much rather have that low to mid range response. I'd rarely be at WOT or anywhere near peak. Ill definitely look into those and was already planning to go with the fast 102 also.
Super bummed about the frankenstein heads. I really wanted them. But it doesn't look like I'll be able to have them in time.
Super bummed about the frankenstein heads. I really wanted them. But it doesn't look like I'll be able to have them in time.
You won't be exploiting what the LS7 heads can do.
You will be very happy with this choice.
They will make power to 7000rpm or so.
07-07-2020, 11:14 AM
#7
TECH Fanatic
Join Date: Aug 2009
Location: Coast of San Mateo County Between Pacifica & HMB
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1st choice MamoMotorSports (MMS) LS3 with the AFR Casting
2nd choice AFR LS3
3rd choice MMS 235s
4th choice AFR 230
All of these are Cast, Machined (CND), finished in the USA
I would talk with Tony Mamo in So Ca (he comes up to the SF Bay Area frequently) he is finishing
up 2 different 416s with his cathedral 235s as we speak.
His LS3S are on par with the Frankenstein LS3 castings just 12* VS 11*
With 12.2:1 compression and the proper cam you could go either way.
My .02
2nd choice AFR LS3
3rd choice MMS 235s
4th choice AFR 230
All of these are Cast, Machined (CND), finished in the USA
I would talk with Tony Mamo in So Ca (he comes up to the SF Bay Area frequently) he is finishing
up 2 different 416s with his cathedral 235s as we speak.
His LS3S are on par with the Frankenstein LS3 castings just 12* VS 11*
With 12.2:1 compression and the proper cam you could go either way.
My .02
Last edited by NAVYBLUE210; 07-07-2020 at 11:31 AM.
Trending Topics
07-07-2020, 11:20 AM
#8
Staging Lane
Thread Starter
07-07-2020, 11:21 AM
#9
Staging Lane
Thread Starter
07-07-2020, 11:28 AM
#10
Lets compare the AFR LS3 and the Mamo's 235CC head.
The cathedral will still make more power and torque in the low and mid range RPM and may be slightly down at peak although I don't think the difference will be that much.
All your part throttle positions and tip in will be a lot sharper with the cathedral setup.
The AFR 230 is the standard head you get from AFR. Still pretty good out of the box. Same as the AFR LS3 out of the box.
If you contact Tony and tell him what you are looking for I am certain he would recommend his cathedral setup.
The cathedral will still make more power and torque in the low and mid range RPM and may be slightly down at peak although I don't think the difference will be that much.
All your part throttle positions and tip in will be a lot sharper with the cathedral setup.
The AFR 230 is the standard head you get from AFR. Still pretty good out of the box. Same as the AFR LS3 out of the box.
If you contact Tony and tell him what you are looking for I am certain he would recommend his cathedral setup.
The following users liked this post:
NAVYBLUE210 (07-07-2020)
07-07-2020, 11:32 AM
#11
Staging Lane
Thread Starter
Lets compare the AFR LS3 and the Mamo's 235CC head.
The cathedral will still make more power and torque in the low and mid range RPM and may be slightly down at peak although I don't think the difference will be that much.
All your part throttle positions and tip in will be a lot sharper with the cathedral setup.
The AFR 230 is the standard head you get from AFR. Still pretty good out of the box. Same as the AFR LS3 out of the box.
If you contact Tony and tell him what you are looking for I am certain he would recommend his cathedral setup.
The cathedral will still make more power and torque in the low and mid range RPM and may be slightly down at peak although I don't think the difference will be that much.
All your part throttle positions and tip in will be a lot sharper with the cathedral setup.
The AFR 230 is the standard head you get from AFR. Still pretty good out of the box. Same as the AFR LS3 out of the box.
If you contact Tony and tell him what you are looking for I am certain he would recommend his cathedral setup.
07-07-2020, 11:41 AM
#12
TECH Fanatic
Join Date: Aug 2009
Location: Coast of San Mateo County Between Pacifica & HMB
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Comparing the LS3s Vs Cathedrals mentioned MMS VS MMS & AFR VS AFR
The cathedrals will be sharper and crisper of idle part throttle and make more hp
& torque to about 5000 rpm (both with standard runner Fast) 5500+ the LS3s
will pull away but at 12.2:1 Comp the cam will make the biggest difference
in these comparisons. Like Bortous suggested speak with Tony.
The cathedrals will be sharper and crisper of idle part throttle and make more hp
& torque to about 5000 rpm (both with standard runner Fast) 5500+ the LS3s
will pull away but at 12.2:1 Comp the cam will make the biggest difference
in these comparisons. Like Bortous suggested speak with Tony.
07-07-2020, 12:15 PM
#14
Staging Lane
Thread Starter
Comparing the LS3s Vs Cathedrals mentioned MMS VS MMS & AFR VS AFR
The cathedrals will be sharper and crisper of idle part throttle and make more hp
& torque to about 5000 rpm (both with standard runner Fast) 5500+ the LS3s
will pull away but at 12.2:1 Comp the cam will make the biggest difference
in these comparisons. Like Bortous suggested speak with Tony.
The cathedrals will be sharper and crisper of idle part throttle and make more hp
& torque to about 5000 rpm (both with standard runner Fast) 5500+ the LS3s
will pull away but at 12.2:1 Comp the cam will make the biggest difference
in these comparisons. Like Bortous suggested speak with Tony.
07-07-2020, 12:17 PM
#15
Staging Lane
Thread Starter
07-07-2020, 03:19 PM
#16
07-07-2020, 03:41 PM
#17
On The Tree
07-07-2020, 03:58 PM
#18
Staging Lane
Thread Starter
JR, you're AWESOME! Thank you.
Just to clarify, I wasn't bashing FED at all. I was more bummed about missing out on them but you came through for me. Thank you so much and thank you for calling me directly. Very much appreciated. 5 star customer service all the way right there
Just to clarify, I wasn't bashing FED at all. I was more bummed about missing out on them but you came through for me. Thank you so much and thank you for calling me directly. Very much appreciated. 5 star customer service all the way right there
07-07-2020, 04:04 PM
#19
On The Tree
JR, you're AWESOME! Thank you.
Just to clarify, I wasn't bashing FED at all. I was more bummed about missing out on them but you came through for me. Thank you so much and thank you for calling me directly. Very much appreciated. 5 star customer service all the way right there
Just to clarify, I wasn't bashing FED at all. I was more bummed about missing out on them but you came through for me. Thank you so much and thank you for calling me directly. Very much appreciated. 5 star customer service all the way right there
and 100 on the way lolGlad this shop called back.
The following users liked this post:
G Atsma (07-07-2020)
07-07-2020, 04:45 PM
#20
JR, you're AWESOME! Thank you.
Just to clarify, I wasn't bashing FED at all. I was more bummed about missing out on them but you came through for me. Thank you so much and thank you for calling me directly. Very much appreciated. 5 star customer service all the way right there
Just to clarify, I wasn't bashing FED at all. I was more bummed about missing out on them but you came through for me. Thank you so much and thank you for calling me directly. Very much appreciated. 5 star customer service all the way right there
The following 3 users liked this post by Bspeck82: