With AI's success with their 100% CNC port LT1 heads (10.xx's at 135MPH) and my interest in building a solid roller, I have been really contemplating a streetable 355 SR, may see 3-5k miles a year, and am not looking for any peaky power, I want a solid and strong powerband. My dilemma is, I want to keep the stock castings, as well as the stock intake, as well as the stock ECU and the stock crank. Goal: Trapping 120+ on the motor only, never see N20 or boost.

Things I have read

Oiling is key in the live of a SR, don't get crazy on lift (less than .600), Be careful with spring pressure, rebuild every ~20k miles

Basically I DO NOT expect the results of the AI car that ran that time, as mine will be a different beast altogether, but am wondering, will the 355 offer the results I am looking for, while retaining stock castings, intake, crank, pcm using the AI 100% CNC package, with their solid roller set-up?

 

Lift and springs aren't the problem with a solid roller. Oiling the roller bearings at low RPM's is. Crower and Isky now make a mech roller lifter that is pressure oiled. This is the only way to go for the street.
Ya could put a set of rollers that break regularly on the street and put them in a circle track car and never have a problem for three or four years,'cause they aren't run much at low RPM's.The normal roller is splash lubed.

 

To trap 120+, you don't need a super aggressive lobe profile. The lifters will live a much happier life without it.

For your goals, I don't see why you want to go SR in the first place as so many HR cars are already running in that range. Build a strong HR cammed motor and spend the rest of your time getting the car together at the track.

Then again, if you want to spin it to 7k+, then the SR IMO is a necessity and the stock PCM gets the trash can.

-Mindgame

 

what is HR and SR???

 

HR = Hydraulic Roller
SR = Solid Roller

Refering to the valvetrain and camshaft.

I looked into the HR side of 120+ MPH, and it seems to be less common, of course it would always be good to up there with the few. Based on the stock limitations of the computer and my not wanting a FAST/MoTec/DFI set-up, it seems I will shoot for the HR. Itll be cheaper . I just want solid 11's with something that can see street duty. Is there anyone doing low 11's on a street set-up, on a hydraulic roller in a nearly full weight car. I think that would be a reasonable goal within the right seat time and tuning. Only time will tell.

-eric