HSR camshaft recommendations ??
#1
HSR camshaft recommendations ??
HRS Camshaft Recommendation?
Which cam?? Recommendations?
Hope you guys that have done the HSR swap can help me out.
87 IROC Z. 355 HSR, 1.6 full roller rockers, AFR 190 heads, headers/exhaust, 700R4 with 2800 stall. 3.45 rear gears. custom programmed chip.
I'm currently running a comp. cams roller 210int./220exh. with .480" lift (.512 with 1.6 rockers) and a 112* lobe seperation. (It's a 260HR-12 i think.)
I want to increase the usable RPM, make good street torque, but take advantage of the good heads for some big HP and RPM.
I want to maintain decent highway mileage and have a strong midrange. My cruise RPM is about 2500 (+-).
Which cam?? Recommendations?
Hope you guys that have done the HSR swap can help me out.
87 IROC Z. 355 HSR, 1.6 full roller rockers, AFR 190 heads, headers/exhaust, 700R4 with 2800 stall. 3.45 rear gears. custom programmed chip.
I'm currently running a comp. cams roller 210int./220exh. with .480" lift (.512 with 1.6 rockers) and a 112* lobe seperation. (It's a 260HR-12 i think.)
I want to increase the usable RPM, make good street torque, but take advantage of the good heads for some big HP and RPM.
I want to maintain decent highway mileage and have a strong midrange. My cruise RPM is about 2500 (+-).
#6
aklim, that link is expensive! The LT4 hot cam was priced @ 349, it's 175 here http://www.sdpc2000.com . As far as a cam that will go well with the HSR. The HSR is similar to teh mini ram/lt1 intake. I bet the lt4 hot cam would work awsome with that set up. I'm considering that cam in the near future. I think my no. 5 header tube may be casued by a re-ground cam and the duration my be wrong on no. 5. So I may be purchasing the hot cam to replace my zz3 cam. Later, HSR
#10
thanks for your input everyone.
IROCZZ3 nice car, and very nice 1/4 times! I hope mine comes close to that with the new cam.
Have you ever been on a dyno? I wonder what RWHP it's making. You like the way that cam works, ie. torque curve etc? How's it in everyday driving? Do any highway trips or anything?
IROCZZ3 nice car, and very nice 1/4 times! I hope mine comes close to that with the new cam.
Have you ever been on a dyno? I wonder what RWHP it's making. You like the way that cam works, ie. torque curve etc? How's it in everyday driving? Do any highway trips or anything?
#12
Originally posted by Osmosis
What is the difference between teh custom ground hot cam and the GM hot cam?
What is the difference between teh custom ground hot cam and the GM hot cam?
#14
Originally posted by stealthramman
thanks for your input everyone.
IROCZZ3 nice car, and very nice 1/4 times! I hope mine comes close to that with the new cam.
Have you ever been on a dyno? I wonder what RWHP it's making. You like the way that cam works, ie. torque curve etc? How's it in everyday driving? Do any highway trips or anything?
thanks for your input everyone.
IROCZZ3 nice car, and very nice 1/4 times! I hope mine comes close to that with the new cam.
Have you ever been on a dyno? I wonder what RWHP it's making. You like the way that cam works, ie. torque curve etc? How's it in everyday driving? Do any highway trips or anything?
Highway driving? I drive it to the track all the time which is 2 1/2 hours north, or 1 1/2 hours south depending on which track I go to.
#15
Id recommend either the XR276HR or the XR282HR. The cam you have now seems very small for your setup.
Formularpm: Would you say to go with 110* or 112* lobe separation on these cams? Or do you think this makes much difference overall?? I guess the 112* cam will idle a bit better.
Formularpm: Would you say to go with 110* or 112* lobe separation on these cams? Or do you think this makes much difference overall?? I guess the 112* cam will idle a bit better.