Rockers
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Cargo Master
Joined: Oct 2010
Posts: 2,339
Likes: 32
From: Lost In a Pit of Despair
Rockers
Hey everyone,
I'm researching parts to build my 300 this summer, and I had a quick question.
Are roller rockers necessary for a mild build? I'll have a 60 overbore, offy intake, split header, comp 252h, and shallow pistons. All I could find for roller rockers are Hartland Sharpe set for $300, which is more than I'd like to spend. Would I be okay with regular rockers?
Thanks
Jameson
I'm researching parts to build my 300 this summer, and I had a quick question.
Are roller rockers necessary for a mild build? I'll have a 60 overbore, offy intake, split header, comp 252h, and shallow pistons. All I could find for roller rockers are Hartland Sharpe set for $300, which is more than I'd like to spend. Would I be okay with regular rockers?
Thanks
Jameson
Tuned
Joined: Jul 2014
Posts: 270
Likes: 3
From: Texas
The stock rocker arms should be just fine for that setup. I ran stock ones on my 300 with a comp 268 cam and didn't have any problems. While you are at it, you might want to get ARP screw in rocker arm studs. If you want to use roller rockers, that would be about the only way to go as I think they are only offered in 3/8 and 7/16. You can get either stock 1:6 ratio or a 1:7.3 ratio with chevy big block roller rockers but they will throw your geometry off a little causing other modifications. My opinion is to stay with the stock ones.
Lead Driver
Joined: Mar 2008
Posts: 7,188
Likes: 384
From: Near Los Angeles
I agree with all the 80ford100 said. If you're changing to an aftermarket cam
you have to get screw in studs, ARP, to handle the added torque/stress.
I found a guy on ebay who sells new HS r.rockers, for $229. You have to call him to get that price. I also called HS to verify they were NEW.
Or, as I learned from forum member Trozei, you can order rockers for a chevy 250 I6, through Summit, made by Crower, with the 1.6 ratio, and they interchange with your engine. (It is a common mod for these engines to use the 250 chevy 1.73 rockers to get more lift.)
you have to get screw in studs, ARP, to handle the added torque/stress.
I found a guy on ebay who sells new HS r.rockers, for $229. You have to call him to get that price. I also called HS to verify they were NEW.
Or, as I learned from forum member Trozei, you can order rockers for a chevy 250 I6, through Summit, made by Crower, with the 1.6 ratio, and they interchange with your engine. (It is a common mod for these engines to use the 250 chevy 1.73 rockers to get more lift.)
Postmaster
Joined: Nov 2012
Posts: 2,806
Likes: 8
From: Langley, BC
Not at all, but you know you want a set and you know they'll make your engine run smoother. You can definitely get away with not using them. The roller rockers just take away a little frictional loss, that's all.
It was FTF who told me that Chevy 250 rockers would fit and not change the valvetrain geometry, and it was my brand loyalty to Crower that made me buy them. To play it safe, buy the cheaper Ford 300 roller rockers from Harland Sharp.
OP should be reminded that it is only advisable to do this if you are using a factory camshaft.
OP should be reminded that it is only advisable to do this if you are using a factory camshaft.
Thread Starter
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Cargo Master
Joined: Oct 2010
Posts: 2,339
Likes: 32
From: Lost In a Pit of Despair
Good info
I won't be using a stock camshaft. Currently I've been looking at either the comp 252 or 268, but I'm open to recommendations.
Normally I would want to run rollers, but all the other parts were starting to add up quick, and I'm not made of money
-Jameson
I won't be using a stock camshaft. Currently I've been looking at either the comp 252 or 268, but I'm open to recommendations.
Normally I would want to run rollers, but all the other parts were starting to add up quick, and I'm not made of money
-Jameson
Postmaster
Joined: Nov 2012
Posts: 2,806
Likes: 8
From: Langley, BC
Even though I am pro-roller rockers, in your case I would say to not bother. They aren't actually needed and they also require you to buy a very expensive tall valve cover.
As for cams, I am generally not one to promote Comp as they have the biggest failure rate as far as camshafts go. I like the Crower cams, and if you want, I will sell you a Crower 19212 camshaft, new in box, for a good price if you'd like. I bought it because I felt it would be the perfect street performance camshaft. I live just North of the border but frequently go to Blaine and Bellingham. Let me know if you would like it. There is one condition though. You tell me how it performs. I've been wanting to know. The reason I won't be using it is because I ended up changing plans and buying a turbocharger, so I bought custom camshaft from Crower afterwards.
As for cams, I am generally not one to promote Comp as they have the biggest failure rate as far as camshafts go. I like the Crower cams, and if you want, I will sell you a Crower 19212 camshaft, new in box, for a good price if you'd like. I bought it because I felt it would be the perfect street performance camshaft. I live just North of the border but frequently go to Blaine and Bellingham. Let me know if you would like it. There is one condition though. You tell me how it performs. I've been wanting to know. The reason I won't be using it is because I ended up changing plans and buying a turbocharger, so I bought custom camshaft from Crower afterwards.
Laughing Gas
Joined: Dec 2010
Posts: 924
Likes: 1
Even though I am pro-roller rockers, in your case I would say to not bother. They aren't actually needed and they also require you to buy a very expensive tall valve cover.
As for cams, I am generally not one to promote Comp as they have the biggest failure rate as far as camshafts go. I like the Crower cams, and if you want, I will sell you a Crower 19212 camshaft, new in box, for a good price if you'd like. I bought it because I felt it would be the perfect street performance camshaft. I live just North of the border but frequently go to Blaine and Bellingham. Let me know if you would like it. There is one condition though. You tell me how it performs. I've been wanting to know. The reason I won't be using it is because I ended up changing plans and buying a turbocharger, so I bought custom camshaft from Crower afterwards.
As for cams, I am generally not one to promote Comp as they have the biggest failure rate as far as camshafts go. I like the Crower cams, and if you want, I will sell you a Crower 19212 camshaft, new in box, for a good price if you'd like. I bought it because I felt it would be the perfect street performance camshaft. I live just North of the border but frequently go to Blaine and Bellingham. Let me know if you would like it. There is one condition though. You tell me how it performs. I've been wanting to know. The reason I won't be using it is because I ended up changing plans and buying a turbocharger, so I bought custom camshaft from Crower afterwards.
Trozei, I have that same cam in my pickup truck. I love it. I didn't pick that cam. I was gonna go with Isky or Crane but thenI asked my machinist what should I go with? He said Crower. He chose that cam for me. God rest his soul. I've had a mechanic that has a big block 69 Chevelle (he timed my engine) drive my truck and he said he really liked how it pulls at 2000 rpm. The drive line is all original. Stock manual OD 4 speed tranny, and ford 8.8 open diff with 3.08 gears.
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Postmaster
Joined: Nov 2012
Posts: 2,806
Likes: 8
From: Langley, BC
Trozei, I have that same cam in my pickup truck. I love it. I didn't pick that cam. I was gonna go with Isky or Crane but thenI asked my machinist what should I go with? He said Crower. He chose that cam for me. God rest his soul. I've had a mechanic that has a big block 69 Chevelle (he timed my engine) drive my truck and he said he really liked how it pulls at 2000 rpm. The drive line is all original. Stock manual OD 4 speed tranny, and ford 8.8 open diff with 3.08 gears.
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Thread Starter
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Cargo Master
Joined: Oct 2010
Posts: 2,339
Likes: 32
From: Lost In a Pit of Despair
Even though I am pro-roller rockers, in your case I would say to not bother. They aren't actually needed and they also require you to buy a very expensive tall valve cover.
As for cams, I am generally not one to promote Comp as they have the biggest failure rate as far as camshafts go. I like the Crower cams, and if you want, I will sell you a Crower 19212 camshaft, new in box, for a good price if you'd like. I bought it because I felt it would be the perfect street performance camshaft. I live just North of the border but frequently go to Blaine and Bellingham. Let me know if you would like it. There is one condition though. You tell me how it performs. I've been wanting to know. The reason I won't be using it is because I ended up changing plans and buying a turbocharger, so I bought custom camshaft from Crower afterwards.
As for cams, I am generally not one to promote Comp as they have the biggest failure rate as far as camshafts go. I like the Crower cams, and if you want, I will sell you a Crower 19212 camshaft, new in box, for a good price if you'd like. I bought it because I felt it would be the perfect street performance camshaft. I live just North of the border but frequently go to Blaine and Bellingham. Let me know if you would like it. There is one condition though. You tell me how it performs. I've been wanting to know. The reason I won't be using it is because I ended up changing plans and buying a turbocharger, so I bought custom camshaft from Crower afterwards.
I may take you up on that, but I won't be building/buying until the summer.
Good info too
-Jameson
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