Comp Cams' DTL Lobes
10-16-2015 | 10:16 AM
#22
KCS, have you read this buildup? Stock rockers and lash...Patterson is no joke when it comes to engine building
http://www.enginelabs.com/engine-tec...-stock-racing/
This pic is interesting to say the least...
http://www.enginelabs.com/engine-tec...-stock-racing/
This pic is interesting to say the least...
The spacers for the rings grooves is a pretty cool trick too.
Those Stock Eliminator guys are no joke. I would love to just sit in a corner of one of those shop and see what goes on there for a week or two.
10-16-2015 | 10:52 AM
#23
Stock Eliminator Racing...testing limits of OEM parts as long as I have been alive.
9.52 in a 3360lb car is getting it done with stock, un-ported heads, only .610 lift and 10.4-1 compression
9.52 in a 3360lb car is getting it done with stock, un-ported heads, only .610 lift and 10.4-1 compression
10-16-2015 | 10:57 AM
#24
I'm wanting to use a steel rocker arm, so I'm looking at the Comp Ultra Pro Magnum Rockers. They're under $350 from Tick. Even without the big steel adjuster, I'm sure they're heaver than aluminum rockers, but I don't think I'll have to worry about trunnion failures, fatigue cracks, or clearancing the valve cover rail.
I supposed I could use those rockers in the stud mount configuration if I were to convert to solid roller. At that point, I might as well ditch the EFI and coils and put a carb and distributor on there too lol.
With those rockers, a PAC spring kit, 3/8" pushrods, Caddy lifters, and the cam, I'm looking at just under $1600 including shipping.
I supposed I could use those rockers in the stud mount configuration if I were to convert to solid roller. At that point, I might as well ditch the EFI and coils and put a carb and distributor on there too lol.
With those rockers, a PAC spring kit, 3/8" pushrods, Caddy lifters, and the cam, I'm looking at just under $1600 including shipping.
Solid roller works fine with fuel injection and ls coils
10-16-2015 | 11:59 AM
#26
I agree, that's damn impressive! I wonder what their valve job consisted of.
10-16-2015 | 12:18 PM
#27
No, I haven't read that article before. Thanks for posting that! I'm guessing here, but I bet they paid very careful attention to the valve height and length as well as the height of the rockers in relation to the valve to get that lash right. Something you can only do when you have an entire machine shop at your disposal and the entire engine. It looks like its only the second feeler gauge in the stack, so lash is probably .002-.003" or so. I wouldn't expect someone to be able to replicate that easily with off the shelf parts.
10-16-2015 | 06:10 PM
#29
Yeah that 711 was on break in oil. By the time you put water weight in there plus the cool air intake ducting with buck forty traps. Geesh. Ever heard of what a C.E. Racer does when they get into the later rounds and they "dry it out"..?? Like 1-1.5 quarts of oil to minimize wind age, for the few hundred crank revolutions at zero pressure, I'm betting this thing will twist out closer to 730 and run 9.30s or so in good air. Insane for sure 💪