BA98TA

iTrader: (24)

I have a set of MMS stage 2 heads that were milled .030

Does anyone know what size pushrods I will need for this setup with an aftermarket cam?

Cam specs: 227.09/226.12, .579/.580 on 113

Thanks guys!

brad8266

iTrader: (23)

Measure with a pushrod checking tool. I am going to put this in my sig since it gets asked about 50 times a week.

BA98TA

iTrader: (24)

I dont have a pushrod checking tool or else I'd use it, someone said it may be 7.35" but he wasnt sure.

Plus when I do my H/C swap, I wont have time to wait on a tool to get here so i can check the length needed and then have to wait MORE time for a set of pushrods to get here. This is my DD.

If anyone has a similar setup, please share what length of pushrods you are using.

brad8266

iTrader: (23)

Buy the length checker when you order the heads/cam and after you measure have the rods overnighted. Or rent a car for a day, you should plan for bugs to happen anyway, its a bad idea to try to pull off a head/cam swap in a day with no backup for a DD.

Might as well get it right the first time rather than playing guessing games.

Who is grinding that cam and what size head gaskets are you going to use?

WS6nJAX

iTrader: (207)

checker is the ONLY way to go. if you order the wrong size p/r's your gonna have to wait for the correct size any way.

brady346

iTrader: (13)

Hey guys! Take it easy on him. He bought the cam from me and the heads from another member and I told him to post here because I didnt know the answer. I also told him he would get replies saying buy a checker and others suggesting a stock length -.030" but someone could have had an aftermarket cam and the same heads. brad8266, I remember when you used to ask questions like this.......and do not ******* say it never happened. A helpful reply would be whatever stock pushrod length is: stock pr - .030=7.xxx. That might be a little too much to ask from all the self proclaimed geniuses answering every thread on LS1tech, but after stating a friendly answer like that......you might HIGHLY suggest a pushrod length checking tool rather than jumping down his throat and putting some ****** *** bullshit in your sig. Every application is different but the same components may have been used by a viewer that could tell him the answer and save $20. Also, this is an actual application not somebody asking about a theoretical setup like every 9 out of 10 threads. WS6nJAX, i have traded with you before and you answered helpfully, just like in your trading. Thank you and if someone has a helpful reply......please let this guy know because he is great to deal with and not a know-it-all.

brad8266

iTrader: (23)

It never happened, I am the be all know all of the LS1. I know everything and dont need to ask questions I didnt make a smart *** comment to him so dont come in here and single me out when i was trying to help the guy out.

He asked a question and I gave him an appropriate response which included the proper way of going about finding the right length pushrods. Well maybe i should have just said 7.4 will work since that what everyone else with noisy *** valvetrains uses. But no instead I try to tell him to do it the right way and you jump in and feel the need to take a few shots at me over nothing.

I put it in my sig since it gets asked so much, maybe ill just make a sticky instead, will that make you feel much better?

Please step off my nuts from now on.

brady346

iTrader: (13)

I think a sticky would be more appropriate than making an example out of his thread and putting it in your sig. Thanks. ......sorry

brad8266

iTrader: (23)

Well i put it in my sig but made no reference to this thread in my sig so it was no big deal.

BA98TA

iTrader: (24)

Okay, bought a PR length checker... next question... figured I'd keep it in this post to consolidate the answers... save a little bandwidth

How thick of a head gasket will I have to go for with these heads? Or does that matter?

brad8266

iTrader: (23)

Head gasket does matter, it will affect the quench area of the chamber. I suggest you measure piston to valve clearance too as well before you even use the PR checker because you want to use the checker for your final assembled engine. Heres the best thing to do. Take an old head gasket that has already been compressed and measure it with a dial caliper, then perfrom a clay PTVC test with the head/cam assembled with an 2 old pushrods too. Crank the engine over a few times then pull the head off and measure the clay. Then measure the difference between the clay and .080 intake valve/.100 exhaust valve, the difference is how much of a thinner gasket you can run.

Example. You use the old stock gasket for the clay test and the old gasket is .052 thick. You slap it together and the clay measures .120 intake/.130 exhaust. That means you can safely run a .030 thinner gasket on that setup, although a .030 thinner gasket would not be practial. So in that case you would just run a .040 head gasket which would leave total PTVC .108intake/.118 exhaust.

So then order the head gasket and do a final assembly, then use you PR checker to get the proper length for for final assembled engine.

bayer-z28

iTrader: (14)

3 Answers...

1- get the checker
2- get the checker

and

3- Did you get the checker?

Or else...
https://ls1tech.com/forums/showthrea...ght=Valve+tick

brad8266

iTrader: (23)