I'm buying a TR224 from a guy locally and need to know what length pushrods to go with 7.4 or 7.425. What length do I need????

 

7.4 i think is stock

 

But do I need longer ones due to a smaller circle base cam?

 

yes...but always measure

 

TR put in there 7.4's in with my TR224 cam 5+yrs ago. So there you go.

 

I normally do, I have an adjustable pushrod to check length, but would like to do this quickly and there isn't any shops around that keep these in stock... The tr224 is a very common setup.

 

7.4 here with the tr224.

 

7.425 if you want less valvetrain noise...

 

I have 7.4 with stock heads for the last two years. 7.35 with milled heads

 

7.425 if you want the valves to stay open. Another case of miss information. 7.4 is a longer than stock pushrod for the smaller base circle of aftermarket cams.

The TR224 is probably the most common cam out there. 7.4 is what you need. Once you mill heads, checking pushrod length is necessary.

I ran 7.4's with stock heads, and I run 7.35's with my AFR 205's milled 0.030 and a stock GM gasket. I did check the pushrod length and valve lash. (actually Slowhawk did with me)

 

Im running them.

 

Good luck with that.

Is that on the "currently being installed" in your sig?

 

i have the 7.425's in with that cam and TSP 5.3L heads. i asked patrick and a few others and they recommended what i have. either should work fine. tsp said they use 7.4's with that setup.

 

i used 7.4" with my comp 224/.581/112 when i ran stock heads...

 

I used 7.4" with stock heads and 7.4" with my Patriot 5.3s.

 

Yeah, there were recommended by quite a few people....its just a choice on what you want really...read me: https://ls1tech.com/forums/showthrea...7.425+pushrods

 

Does throwing LS7 lifters into the equation mix this up any?

 

Davered00SS, you are wrong. With the smaller base circle of the TR224 you can run 7.425 pushrods.