Feedback about roller camshafts

[modular46]

What is everyone doing for roller rockers and shafts?

 

[BRAD_PADGETT]

What is everyone doing for roller rockers and shafts?

Roller Rocker- Scorpion was a disaster. 2 rockers were made wrong and they split in half. I have a used complete set of Scorpions for sale with new replacement rockers. I went T&D all the way.

 

[Sweet6]

I run scorpions on my GN1s for 8 years no problems. The shaft mount T&Ds are nice. They just cost a lot more. When I last looked they were $800 and that was years ago. Not sure what they cost now.

 

[BRAD_PADGETT]

I run scorpions on my GN1s for 8 years no problems. The shaft mount T&Ds are nice. They just cost a lot more. When I last looked they were $800 and that was years ago. Not sure what they cost now.

$1500

 

[TIMINATOR]

HARLAND SHARP.
LIFETIME WARRENTY.
Bought 2 sets. Not building a backup engine, as I got too good an offer to pass up for the car. I'll split the shipping. Still in original packing. 1.65 ratio.
TIMINATOR

 

[Sweet6]

HARLAND SHARP.
LIFETIME WARRENTY.
Bought 2 sets. Not building a backup engine, as I got too good an offer to pass up for the car. I'll split the shipping. Still in original packing. 1.65 ratio.
TIMINATOR

for irons or GN1?

 

[TIMINATOR]

Irons.

 

[Sweet6]

I thought the OP was planning on GN1s unless he changed his mind.

But if irons the HS are good.

 

[modular46]

I thought the OP was planning on GN1s unless he changed his mind.

But if irons the HS are good.

So far I purchased the champion iron CNC ported heads, got a cam from Bison, GN1 stroker kit, and converter from Dave H.

 

[Sweet6]

Then the HS would work. With the 1.65 just need a good spring.

 

[WarWagon]

I really like the TA performance/T&D roller rocker arms, came with everything to install and solid shafts. I use the 1.65 ratio on my 206 comp roller cam.

New item

photos.app.goo.gl

 

[hensleyt]

what lift cam from Bison ? and what rocker ratio did he recommend ? I too have the TA but in 1.5.

 

[chris romani]

I have the 214/214 Roller Cam from Full Throttle with Ported Irons and the Harland Sharp 1.55

 

[modular46]

I have the 214/214 Roller Cam from Full Throttle with Ported Irons and the Harland Sharp 1.55

I have the 214/214 Roller Cam from Full Throttle with Ported Irons and the Harland Sharp 1.55

Lift is 0.330/0.325 duration is 218/212 on a 112 lobe seperation. We are going with 1.60 rockers.

 

[hensleyt]

Lift is 0.330/0.325 duration is 218/212 on a 112 lobe seperation. We are going with 1.60 rockers.

the extreme energy lob is a nice lob.It is more than I would run but Bison is the man. And in the famous word of Larry GETTER GONE.

 

[modular46]

What does everyone's car idle at with a roller cam? Right now I can get my stock motor with 120 pound injectors to idle at 800 rpms. Just curious if its possible to get a cammed car under 900?

 

[BRAD_PADGETT]

Mine idles around 850. Smooth.

 

[chris romani]

Between 850-925

 

[BEATAV8]

What does everyone's car idle at with a roller cam? Right now I can get my stock motor with 120 pound injectors to idle at 800 rpms. Just curious if its possible to get a cammed car under 900?

There’s a trade off between overlap and richness. More overlap will require a richer idle in order to be stable, as well as more speed. More displacement and more static compression helps idle too.
850-900 rpm is pretty typical.
950rpm on a 109 with 224/224 on a 110lsa with 160’s. E85 @ 8.5afr Choppy but stable
850rpm on a 109 with 215/220 on a 112lsa with 120’s. E85 @ 8.5afr Smooth
850rpm on a TA block with 225/225 on a 114lsa. 160’s E85 8.5afr smooth