Stroker In High Boost - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BiggFoot · 08-07-2020, 10:07 AM

The title pretty much sums it up. Would like to hear opinions about whether or not a stroker engine in 20+ psi boost applications is a good idea or not?

I wanted to go the stroker route because it tends to bump the torque up considerably, at least that has been my observation.

When and if I finally get my dream engine, it will be the iron block LSX variety so lets hear it from supercharged section. I truly value your opinions.

JANNETTYRACING · 08-07-2020, 10:43 AM

Quote:

Originally Posted by BiggFoot

The title pretty much sums it up. Would like to hear opinions about whether or not a stroker engine in 20+ psi boost applications is a good idea or not?

I wanted to go the stroker route because it tends to bump the torque up considerably, at least that has been my observation.

When and if I finally get my dream engine, it will be the iron block LSX variety so lets hear it from supercharged section. I truly value your opinions.

I Have an LME built 427 with 25 psi boost making 1300 HP, Interested give me a call.

Engine has dyno and break in miles only.

BiggFoot · 08-07-2020, 02:18 PM

Ted you didnt answer my question. I really did want some discussion on this. I know a lot of guys here have 416 strokers but I would like to know how much boost they are running on them.

Does anyone here have a stroker making 20+ lbs of boost?

JANNETTYRACING · 08-07-2020, 02:32 PM

Quote:

Originally Posted by BiggFoot

Ted you didnt answer my question. I really did want some discussion on this. I know a lot of guys here have 416 strokers but I would like to know how much boost they are running on them.

Does anyone here have a stroker making 20+ lbs of boost?

My 427 is a stroker running 25 psi boost.

The Block is what matters above 15 psi boost.

dreksnot · 08-07-2020, 08:20 PM

I'm running LSX427, so far up to 25psi boost. Max target is expected to be 28psi. E66.

Yes, the torque is noticeable compared.

*SSE 4 2SS* · 08-08-2020, 12:13 AM

417 Stroker running up to 35 lbs of boost... 2000 RWHP at 27 lbs, at 8000 rpm... we shift the car at 9000 rpm, but she spins on the dyno... Twin Turbos... If a buddy doesn’t come through soon, I might be listing the whole shebang... The motor has been completely refreshed, new pistons, rings, bearings, heads etc... It is sitting in the shipping crate waiting to be reassembled... This is a half filled aluminum block...

I can’t drive the car anymore after my heart attack and subsequent strokes...

This is not a for sale ad... Yet...

bct10985 · 08-08-2020, 06:49 AM

In an aftermarket block what are you considering a “stroker”? A crank that has a longer stroke than a gm crank?

BiggFoot · 08-08-2020, 11:10 AM

Yes, crank stroke and/or rod length. I am not the builder! We were going to start with the 427 LSX bore of 4.125" and then go with a 4.125" stroke and a 6.125" rod (or 6" rod depending on the piston), which equated to somewhere around 441 cui but having trouble finding the parts.

One well known speed shop (I will keep it off the record) told us that a crank stroke over 4" and a rod stroke over 6" becomes detrimental at high boost (20+ psi) because there isn't much meat on the bottom of the piston and the wrist pin can become a failure point.

I am just trying to get feedback from some of you experienced guys before we launch into the unknown on my nickel <grin>.

eLeSthree · 08-10-2020, 06:57 AM

Quote:

Originally Posted by BiggFoot

Yes, crank stroke and/or rod length. I am not the builder! We were going to start with the 427 LSX bore of 4.125" and then go with a 4.125" stroke and a 6.125" rod (or 6" rod depending on the piston), which equated to somewhere around 441 cui but having trouble finding the parts.

One well known speed shop (I will keep it off the record) told us that a crank stroke over 4" and a rod stroke over 6" becomes detrimental at high boost (20+ psi) because there isn't much meat on the bottom of the piston and the wrist pin can become a failure point.

I am just trying to get feedback from some of you experienced guys before we launch into the unknown on my nickel <grin>.

I think most will agree that a 4inch stroke is the longest preffered. A lot of guys even stick with the stock stroke, but they’re mostly turbo guys.

JANNETTYRACING · 08-10-2020, 07:17 AM

Quote:

Originally Posted by BiggFoot

Yes, crank stroke and/or rod length. I am not the builder! We were going to start with the 427 LSX bore of 4.125" and then go with a 4.125" stroke and a 6.125" rod (or 6" rod depending on the piston), which equated to somewhere around 441 cui but having trouble finding the parts.

One well known speed shop (I will keep it off the record) told us that a crank stroke over 4" and a rod stroke over 6" becomes detrimental at high boost (20+ psi) because there isn't much meat on the bottom of the piston and the wrist pin can become a failure point.

I am just trying to get feedback from some of you experienced guys before we launch into the unknown on my nickel <grin>.

I has to do with the piston coming out of the bottom of the cylinder liner that is why I said aftermarket block.

Ted.

BiggFoot · 08-11-2020, 07:55 AM

I hear you Ted. Was always thinking stroked aftermarket block. Leaning toward dropping the stroker idea and going with an LSX 427 short block built for boost by LME out of Houston. They are just down the road from me, my shop uses them a lot for builds, the blocks come professionally put together with good parts and a list of quality control checks that are impressive, plus there are a number of offered upgrade options to suit your taste.

Check it out:

https://www.latemodelengines.com/ind...induction.html

JANNETTYRACING · 08-11-2020, 08:12 AM

Quote:

Originally Posted by BiggFoot

I hear you Ted. Was always thinking stroked aftermarket block. Leaning toward dropping the stroker idea and going with an LSX 427 short block built for boost by LME out of Houston. They are just down the road from me, my shop uses them a lot for builds, the blocks come professionally put together with good parts and a list of quality control checks that are impressive, plus there are a number of offered upgrade options to suit your taste.

Check it out:

https://www.latemodelengines.com/ind...induction.html

This is the one I have https://www.latemodelengines.com/ind...2000-filb.html

BiggFoot · 08-11-2020, 08:34 AM

That is one fine engine if you looking to just drop one in.

JANNETTYRACING · 08-11-2020, 09:08 AM

Quote:

Originally Posted by BiggFoot

That is one fine engine if you looking to just drop one in.

Is this something you would entertain, It is really a shame it just sits in my car getting dusty, no time and tracks are closed around here.

08-07-2020, 10:07 AM	#1
BiggFoot Drives: 2010 Camaro (M6) 1000+ HP SBE Join Date: Jun 2011 Location: Houston Posts: 1,391	Stroker In High Boost The title pretty much sums it up. Would like to hear opinions about whether or not a stroker engine in 20+ psi boost applications is a good idea or not? I wanted to go the stroker route because it tends to bump the torque up considerably, at least that has been my observation. When and if I finally get my dream engine, it will be the iron block LSX variety so lets hear it from supercharged section. I truly value your opinions. __________________ F-1X, Cog Drive, ATI Super Pulley/Sprag ~ 19 psi Blower Cam Brodix BP BR 3 Heads Kooks LT Headers and full 3" exhaust Fore Triple Pump Fuel System with ID 1700X Injectors - E85 conversion DSS 9” Conversion (1400 hp axles, driveshaft, pumpkin) & Strange 3.70 gears McLeod RXT Twin HD Clutch & Upgraded Slave RPM Level VII TR6060 BMR Drag Suspension Package w/Strange shocks Carlyle 15" and M/T ET Street R radials 10.1 @ 143 mph 1/4 mile

08-07-2020, 02:18 PM	#3
BiggFoot Drives: 2010 Camaro (M6) 1000+ HP SBE Join Date: Jun 2011 Location: Houston Posts: 1,391	Ted you didnt answer my question. I really did want some discussion on this. I know a lot of guys here have 416 strokers but I would like to know how much boost they are running on them. Does anyone here have a stroker making 20+ lbs of boost? __________________ F-1X, Cog Drive, ATI Super Pulley/Sprag ~ 19 psi Blower Cam Brodix BP BR 3 Heads Kooks LT Headers and full 3" exhaust Fore Triple Pump Fuel System with ID 1700X Injectors - E85 conversion DSS 9” Conversion (1400 hp axles, driveshaft, pumpkin) & Strange 3.70 gears McLeod RXT Twin HD Clutch & Upgraded Slave RPM Level VII TR6060 BMR Drag Suspension Package w/Strange shocks Carlyle 15" and M/T ET Street R radials 10.1 @ 143 mph 1/4 mile

08-07-2020, 08:20 PM	#5
dreksnot Served USN - Atomic Chimp Drives: 13 Camaro LSX434 TT M6, 21 ZLE A10 Join Date: Jul 2012 Location: Fort Collins, CO Posts: 1,603 View My Garage	I'm running LSX427, so far up to 25psi boost. Max target is expected to be 28psi. E66. Yes, the torque is noticeable compared. __________________ In excess of 1,000WHP LSX434 \| AGP 65/65 TT \| BTR Equalizer Intake \| Trickflow 245cc cathedral \| BTR custom cam \| Cortex EBC \| n2mb WOT \| ID-1700x \| Brisk GR12S \| RPM Lv 7 TR6060 \| AGP's Triple 525LPH Fore Fuel \| Monster LT1-S Triple \| 4.11 DSS Proform 9", CF driveshaft, 1400hp axles \| Hurst Line Lock \| MGW Retro Short Throw w/old skool Hurst T-handle \| ADM solid subframe mounts \| Prothane Motor Mounts \| Revshift Poly Trans insert \| Moreno camber/caster plates

08-08-2020, 12:13 AM	#6
SSE 4 2SS Boosted Moderator Drives: Bone Stock LS3 Join Date: Sep 2009 Location: Marion Tx Posts: 15,476	417 Stroker running up to 35 lbs of boost... 2000 RWHP at 27 lbs, at 8000 rpm... we shift the car at 9000 rpm, but she spins on the dyno... Twin Turbos... If a buddy doesn’t come through soon, I might be listing the whole shebang... The motor has been completely refreshed, new pistons, rings, bearings, heads etc... It is sitting in the shipping crate waiting to be reassembled... This is a half filled aluminum block... I can’t drive the car anymore after my heart attack and subsequent strokes... This is not a for sale ad... Yet... __________________ If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough...

08-08-2020, 06:49 AM	#7
bct10985 Drives: 2010 2SS LS3, 2013 duramax Join Date: Nov 2012 Location: Dover, De Posts: 1,451	In an aftermarket block what are you considering a “stroker”? A crank that has a longer stroke than a gm crank? __________________ ECS Ysi-B, cam, Tsp 2" longtubes, Squash dual pumps, Id1300s, meth, 4L80e, FTI 3600, ZL1 3.73 diff, BMR suspension, 15" conversion, weld rts mt 275 et street R. 9.6@147mph

08-08-2020, 11:10 AM	#8
BiggFoot Drives: 2010 Camaro (M6) 1000+ HP SBE Join Date: Jun 2011 Location: Houston Posts: 1,391	Yes, crank stroke and/or rod length. I am not the builder! We were going to start with the 427 LSX bore of 4.125" and then go with a 4.125" stroke and a 6.125" rod (or 6" rod depending on the piston), which equated to somewhere around 441 cui but having trouble finding the parts. One well known speed shop (I will keep it off the record) told us that a crank stroke over 4" and a rod stroke over 6" becomes detrimental at high boost (20+ psi) because there isn't much meat on the bottom of the piston and the wrist pin can become a failure point. I am just trying to get feedback from some of you experienced guys before we launch into the unknown on my nickel <grin>. __________________ F-1X, Cog Drive, ATI Super Pulley/Sprag ~ 19 psi Blower Cam Brodix BP BR 3 Heads Kooks LT Headers and full 3" exhaust Fore Triple Pump Fuel System with ID 1700X Injectors - E85 conversion DSS 9” Conversion (1400 hp axles, driveshaft, pumpkin) & Strange 3.70 gears McLeod RXT Twin HD Clutch & Upgraded Slave RPM Level VII TR6060 BMR Drag Suspension Package w/Strange shocks Carlyle 15" and M/T ET Street R radials 10.1 @ 143 mph 1/4 mile Last edited by BiggFoot; 08-08-2020 at 11:37 AM.

08-11-2020, 07:55 AM	#11
BiggFoot Drives: 2010 Camaro (M6) 1000+ HP SBE Join Date: Jun 2011 Location: Houston Posts: 1,391	I hear you Ted. Was always thinking stroked aftermarket block. Leaning toward dropping the stroker idea and going with an LSX 427 short block built for boost by LME out of Houston. They are just down the road from me, my shop uses them a lot for builds, the blocks come professionally put together with good parts and a list of quality control checks that are impressive, plus there are a number of offered upgrade options to suit your taste. Check it out: https://www.latemodelengines.com/ind...induction.html __________________ F-1X, Cog Drive, ATI Super Pulley/Sprag ~ 19 psi Blower Cam Brodix BP BR 3 Heads Kooks LT Headers and full 3" exhaust Fore Triple Pump Fuel System with ID 1700X Injectors - E85 conversion DSS 9” Conversion (1400 hp axles, driveshaft, pumpkin) & Strange 3.70 gears McLeod RXT Twin HD Clutch & Upgraded Slave RPM Level VII TR6060 BMR Drag Suspension Package w/Strange shocks Carlyle 15" and M/T ET Street R radials 10.1 @ 143 mph 1/4 mile

08-11-2020, 08:34 AM	#13
BiggFoot Drives: 2010 Camaro (M6) 1000+ HP SBE Join Date: Jun 2011 Location: Houston Posts: 1,391	That is one fine engine if you looking to just drop one in. __________________ F-1X, Cog Drive, ATI Super Pulley/Sprag ~ 19 psi Blower Cam Brodix BP BR 3 Heads Kooks LT Headers and full 3" exhaust Fore Triple Pump Fuel System with ID 1700X Injectors - E85 conversion DSS 9” Conversion (1400 hp axles, driveshaft, pumpkin) & Strange 3.70 gears McLeod RXT Twin HD Clutch & Upgraded Slave RPM Level VII TR6060 BMR Drag Suspension Package w/Strange shocks Carlyle 15" and M/T ET Street R radials 10.1 @ 143 mph 1/4 mile