I have not done this before on a hemi however couldn’t you install a short pushrod and measure the gap between the pushrod end and rocker with a feeler gauge and add that measurement to the length of the pushrod to determine the length you need instead of buying the $100 tool/kit that’s somewhat difficult to adjust with your fingers in a tight space. It seems that it would be even easier with the feeler gauge method with the engine installed also.
That may work, but you would have to consider the inset where the pushrod sits in the rocker arm. The feeler gauge wouldn't account for that, so it may prove a little more difficult using that method. Whereas with the checker tool, it is guaranteed at the to be at the setting you want without the guess work. Good idea though!
Thank you for the cool video... watchin this made me start thinkin to check my lifter preload (engine still on stand).... this is back when you guys were still guessin pushrod lengths... you guys nailed it, i got .073 preload with your nsr cam and new lifters, with fresh head gaskets too!!! You guys are good!!
I need your time to help get my 2008 hemi back on the road..I installed camshaft and lifters...due to the plastic lifter holder cracked and allowed my lifter to turn sideways and eat the camshaft..also oil pump timing chain...after in stall it fired right up but rattling even more so...I noticed uneven wore spots on valves from rockarm... And oil wasn't getting good oil pressure so I seen scarring on the pushrods and on the inside of where to push rods rod on the rocker arm so I replaced the pushrods thinking that they were shorter allowing a space in-between the valve also killing oil pressure after installing new pushrods now think I just ordered whatever RockAuto said....now I have extremely high oil pressure but rattling not so much..I'm lost..I will pay for ur time in Avance 💪💪💪
I've got a set of 6.4 heads that I want to put on my 6.1 426cu. In. Stroker, I now that these will need longer pushrods and I will need bigger intake valves reliefs in the piston, do you sell these kind of kits
Byron great video Thank you for putting it together. Very informative. Question: Why is there 3 pushrod checking tools? Is the intake a common length and the exhaust length varies in different years?
Sooo every cylinder has to be tdc right for the one ur measuring it. With the spark plugs out an checking to see the the cycleder is all the way up . Or just tdc on cylinder one only is fine ? Thanks
I've purchased the cam and spring kit.....my rocker arms don't sit flush on the head...do the bolts push it the rest of the way down or something is off?
Hey I enjoy your vids. So I have a 16 charger r/t and would like to do some cam work on it. It’s my daily driving car so I’m not looking for something extreme . I want to increase hp for sure u know just Incase I need to show some power. So what do you recommend ?
So I bought thicker wall pushrods for my 392 and I was told the stock length for a 2018 6.4 MDS cam is 6.800 and 8.100. I got the same size just .80 wall thickness and I measured mine out of the engine and just measuring one on the intake it’s .020 smaller on the stock. Should I swap to shorter pushrods or call where I got them?
I have 2 questions if you're willing to answer - Are the lifters freshly installed (After just sitting in engine oil) or do they need to be pumped up or bled down? I've heard some people say to take the lifter apart to convert it to a solid roller and measure that way, but then you would have to torque the head down twice wrecking your head gasket and head bolts. Or am I confused here? I'd like to do it without yanking the head to put the lifter back to stock/hydraulic if possible. Thank you
@@ModernMuscleXtreme Oh I know, in order to swap out to new lifters, but I'm saying can you put the new lifters in, bolt the head on all the way and measure the pushrod using that? I checked the service manual and it wants the lifters bled down, but it doesn't cover custom pushrod lengths. Thanks for answering!
If you're using MLS gaskets, nothing gets ruined by torquing the heads down, removing them and retorquing again. Gasket is reusable unless you've gone through a few heat cycles and the rubber coating sticks to the head surface. Head bolts however should be checked for stretching signs.
Why .050/ .080 ?? With other v8's with adjustable rockers On a 7/16 NF stud comp preloads the lifters with 1/2 to 3/4 turn past zero, which usually ends up with .025/0.035 preload???
Another great video,Thanks Byron
Great video thanks for the help in getting the right push rod measurements for my 5.7 to 6.1 cam build and Eagle heads
Interesting this mod also, what pushrods length did you get?
Like this very much...clear and easy to understand....Thank you
Fantastic info. Thank you
Good Video. In a few years well I hope a few I'm going to build my new 5.7 and this is very helpful
I need to see a video on that 6 speed magnum y’all got. Seen it at the track and its a bad ass ride.
I have not done this before on a hemi however couldn’t you install a short pushrod and measure the gap between the pushrod end and rocker with a feeler gauge and add that measurement to the length of the pushrod to determine the length you need instead of buying the $100 tool/kit that’s somewhat difficult to adjust with your fingers in a tight space. It seems that it would be even easier with the feeler gauge method with the engine installed also.
Did it work?
That may work, but you would have to consider the inset where the pushrod sits in the rocker arm. The feeler gauge wouldn't account for that, so it may prove a little more difficult using that method. Whereas with the checker tool, it is guaranteed at the to be at the setting you want without the guess work. Good idea though!
Thank you for the cool video... watchin this made me start thinkin to check my lifter preload (engine still on stand).... this is back when you guys were still guessin pushrod lengths... you guys nailed it, i got .073 preload with your nsr cam and new lifters, with fresh head gaskets too!!!
You guys are good!!
510CurtDawg thank you
I need your time to help get my 2008 hemi back on the road..I installed camshaft and lifters...due to the plastic lifter holder cracked and allowed my lifter to turn sideways and eat the camshaft..also oil pump timing chain...after in stall it fired right up but rattling even more so...I noticed uneven wore spots on valves from rockarm... And oil wasn't getting good oil pressure so I seen scarring on the pushrods and on the inside of where to push rods rod on the rocker arm so I replaced the pushrods thinking that they were shorter allowing a space in-between the valve also killing oil pressure after installing new pushrods now think I just ordered whatever RockAuto said....now I have extremely high oil pressure but rattling not so much..I'm lost..I will pay for ur time in Avance 💪💪💪
I've got a set of 6.4 heads that I want to put on my 6.1 426cu. In. Stroker, I now that these will need longer pushrods and I will need bigger intake valves reliefs in the piston, do you sell these kind of kits
Good video.
Byron great video Thank you for putting it together. Very informative.
Question: Why is there 3 pushrod checking tools? Is the intake a common length and the exhaust length varies in different years?
MS RACING COMPONENTS the kit is designed to take in various types of engines
What's the acceptable range for pushrod length? I had my heads skimmed .005" and reassembled with the factory pushrods.
Sooo every cylinder has to be tdc right for the one ur measuring it. With the spark plugs out an checking to see the the cycleder is all the way up . Or just tdc on cylinder one only is fine ? Thanks
i have a 07 crylser 300c the push rod seem to stick out little more and the push rods wont connet to the rocet arms please help
I've purchased the cam and spring kit.....my rocker arms don't sit flush on the head...do the bolts push it the rest of the way down or something is off?
Great video Byron. What is the preload on an MDS lifter for the 5.7 Hemi?
Is a nsr cam better than a spring cam on a 5.7 or is the only difference the power rpm rang
Hey I enjoy your vids. So I have a 16 charger r/t and would like to do some cam work on it. It’s my daily driving car so I’m not looking for something extreme . I want to increase hp for sure u know just Incase I need to show some power. So what do you recommend ?
would i need more pre load on a BGE based 426ci with the non MDS lifters?
So I bought thicker wall pushrods for my 392 and I was told the stock length for a 2018 6.4 MDS cam is 6.800 and 8.100. I got the same size just .80 wall thickness and I measured mine out of the engine and just measuring one on the intake it’s .020 smaller on the stock. Should I swap to shorter pushrods or call where I got them?
I have 2 questions if you're willing to answer - Are the lifters freshly installed (After just sitting in engine oil) or do they need to be pumped up or bled down? I've heard some people say to take the lifter apart to convert it to a solid roller and measure that way, but then you would have to torque the head down twice wrecking your head gasket and head bolts. Or am I confused here? I'd like to do it without yanking the head to put the lifter back to stock/hydraulic if possible. Thank you
Heads need to come off no matter whay
@@ModernMuscleXtreme Oh I know, in order to swap out to new lifters, but I'm saying can you put the new lifters in, bolt the head on all the way and measure the pushrod using that? I checked the service manual and it wants the lifters bled down, but it doesn't cover custom pushrod lengths. Thanks for answering!
If you're using MLS gaskets, nothing gets ruined by torquing the heads down, removing them and retorquing again. Gasket is reusable unless you've gone through a few heat cycles and the rubber coating sticks to the head surface. Head bolts however should be checked for stretching signs.
Why .050/ .080 ??
With other v8's with adjustable rockers
On a 7/16 NF stud comp preloads the lifters with 1/2 to 3/4 turn past zero, which usually ends up with .025/0.035 preload???
It will make noise at that number. Aluminum head expansion and pushrod angle could be the difference
anyone know if the texas speed cam base circle is the same as OEM for a 5.7 swap?
Thomas B we have no knowledge of their product. O suggest you reach out to them
Make sure you get the heads on the right side of the block this time lol
Thanks lol
The 6.800 and 8.100 is that with the preload? I'm working on a 5.7vvt that has a 6.2 cam with 6.2 lifters (hellcat)
6.775
8.075
Normally
@@ModernMuscleXtreme ok is this Byron?
MrYukon04 this is Dave Weber