.904 roller lifters
Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
.904 roller lifters
Anyone running .904 roller lifters in a small block for a street application? I'm about to try one I believe, and am wondering if the low rpm driving may have a detrimental effect for any reason. Thanks
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
If you have a used block that already has .904 lifter bores, then go ahead and use them. If someone is trying to tell you that you need to spend the money to have your lifter bores enlarged to .904 for a performance gain, it is time to listen to someone else.
Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
The block I'm using is already opened up. I was considering bushing up the over sized holes. and going back to the .842s. I've just never used the .904s for a street application. The block is a little Dart "M" so it will deal with the set up, the lifters I'm planning on using are the Crower hippo style lifter. Thanks
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
The block I'm using is already opened up. I was considering bushing up the over sized holes. and going back to the .842s. I've just never used the .904s for a street application. The block is a little Dart "M" so it will deal with the set up, the lifters I'm planning on using are the Crower hippo style lifter. Thanks
I am just a little curious as to why you are choosing these type of parts when you stated that you are using them for a low RPM street motor. (by low rpm I am assuming under 7500). I use the Little M blocks(with .842 lifters) in my circle track motors that I turn to 8800. I use 700# valve springs and have never seen a need for pressure fed rollers. It seems the pieces you are using are overkill unless you have different future plans.
Thread Starter
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
I have the block setting here in the shop doing nothing. So I thought I'd put them in the 75 just for the heck of it. I have the lifters also just setting on the shelf. The 75 needs an engine and I had a 3.8 stroke Crower crank and a GM block getting ready to go together and was just thinking of other things to throw together, other options.
I'm going to order pistons on monday and need to decide. 0.020 over 3.8 stroke for a GM block or do something with the Little "M" at 0.030 over.
The third option is a Rodeck block sitting here that 0.050 over 400 block that's getting a little thin. At 0.050 over the pistons for that one would be expensive. I've got a 4" stroke crank for that one but that one would look nice but I think a real waste for a driver.
By low rpm I'm talking probably never see 7000.
Most of this stuff is just parts I've come by over the years in the shop. Other than pistons rings gaskets and bearings I don't have to buy anything much. Depending on the set up I use, probably have the gaskets and bearings too. Thanks for your ideas
I'm going to order pistons on monday and need to decide. 0.020 over 3.8 stroke for a GM block or do something with the Little "M" at 0.030 over.
The third option is a Rodeck block sitting here that 0.050 over 400 block that's getting a little thin. At 0.050 over the pistons for that one would be expensive. I've got a 4" stroke crank for that one but that one would look nice but I think a real waste for a driver.
By low rpm I'm talking probably never see 7000.
Most of this stuff is just parts I've come by over the years in the shop. Other than pistons rings gaskets and bearings I don't have to buy anything much. Depending on the set up I use, probably have the gaskets and bearings too. Thanks for your ideas
