Shaft Rockers

616 S/R · 06-05-2008, 10:11 PM

Considering upgrading to a set of T&D shaft mount rockers when I freshen. Is anyone here running them or know what kind of HP gain to expect?

WDCreech · 06-06-2008, 01:00 AM

If you run big lift and/or a lot of spring pressure, shafts are a must have. The way I found out was, I put a dial indicater on a stud, inline with the rocker, and rolled the engine over and had over .0015" flex of the stud.

Floyd Staggs · 06-09-2008, 03:57 PM

I don't know about horsepower gains but I sure do like the reduced maintenance and not having to use a stud girdle. I still check the valves about every 20 or so passes out of habit, but I haven't noticed any differences in clearance. They are a little time consuming to set up but they are worth it. I have T&D.

GRIGGS · 06-09-2008, 10:13 PM

Went to shaft rockers on father's 482 cid, picked up about 8 hun and 1.5 mph. He has jesel. My small block has t and d shaft rockers. Like Floyd said, I still check them every weekend. Have adjusted 2 intake valves in 2 years. Approximately 365 passes. Be sure to get the pushrod length correct and not have the adjuster out too far.

06-05-2008, 10:11 PM	#1
616 S/R Junior Member Join Date: Mar 2008 Location: Edmonton,AB Posts: 4 Likes: 0 Liked 0 Times in 0 Posts	Shaft Rockers Considering upgrading to a set of T&D shaft mount rockers when I freshen. Is anyone here running them or know what kind of HP gain to expect?

06-06-2008, 01:00 AM	#2
WDCreech Junior Member Join Date: Jul 2007 Location: Anchorage, AK Posts: 45 Likes: 0 Liked 0 Times in 0 Posts	Re: Shaft Rockers If you run big lift and/or a lot of spring pressure, shafts are a must have. The way I found out was, I put a dial indicater on a stud, inline with the rocker, and rolled the engine over and had over .0015" flex of the stud. __________________ 1964 GTO 2750# 606" IA Pontiac 8.2550@164.17-1/4 1.1981-60" 5.2901@131.97-1/8

06-09-2008, 03:57 PM	#3
Floyd Staggs VIP Member Join Date: Feb 2006 Location: Cucamonga, CA Posts: 1,510 Likes: 132 Liked 220 Times in 95 Posts	Re: Shaft Rockers I don't know about horsepower gains but I sure do like the reduced maintenance and not having to use a stud girdle. I still check the valves about every 20 or so passes out of habit, but I haven't noticed any differences in clearance. They are a little time consuming to set up but they are worth it. I have T&D. __________________ Floyd Staggs 787 SST

06-09-2008, 10:13 PM	#4
GRIGGS Junior Member Join Date: May 2008 Posts: 92 Likes: 0 Liked 0 Times in 0 Posts	Re: Shaft Rockers Went to shaft rockers on father's 482 cid, picked up about 8 hun and 1.5 mph. He has jesel. My small block has t and d shaft rockers. Like Floyd said, I still check them every weekend. Have adjusted 2 intake valves in 2 years. Approximately 365 passes. Be sure to get the pushrod length correct and not have the adjuster out too far.

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