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684 Posts
Hello everyone,
Well as some may have noted from my project journal I have torn down my engine to get ready for my new heads. I have everything else I need and got it narrowed down to two cams but can't figure out which would be best for me. I just gotta get it figured out so I can order it before the heads come!
Here is what im working with...
355 2 bolt main/ 2pc rms
4 valve relief pistons
stock bottom end
eld. perf. intake
holley 650 DP
1 5/8 headers
MSD ing system
The CR should be between 9.1 to 9.8
This is going in a 71 Chevelle that to the best of my knowing weighs around 3500lb it has a TH350 with shift kit and stock rear non posi.
Now I bought my AFR heads and in two weeks they should be here. *hopes* they are the
195cc straight plug 74 cc chamber heads.
My question is which cam should I go with the XE268H or the 270 H magnum cam. I know the magnum is more agressive but it is also a single pattern cam. I just wonder if the 268 dual pattern is needed with the heads. From what I understand the dual patterns work great for more stock heads but not as well on high flow aftermarket?
If someone could help me figure this out
that would be great! Sorry for the long post :mwink:
Chris
Well as some may have noted from my project journal I have torn down my engine to get ready for my new heads. I have everything else I need and got it narrowed down to two cams but can't figure out which would be best for me. I just gotta get it figured out so I can order it before the heads come!
Here is what im working with...
355 2 bolt main/ 2pc rms
4 valve relief pistons
stock bottom end
eld. perf. intake
holley 650 DP
1 5/8 headers
MSD ing system
The CR should be between 9.1 to 9.8
This is going in a 71 Chevelle that to the best of my knowing weighs around 3500lb it has a TH350 with shift kit and stock rear non posi.
Now I bought my AFR heads and in two weeks they should be here. *hopes* they are the
195cc straight plug 74 cc chamber heads.
My question is which cam should I go with the XE268H or the 270 H magnum cam. I know the magnum is more agressive but it is also a single pattern cam. I just wonder if the 268 dual pattern is needed with the heads. From what I understand the dual patterns work great for more stock heads but not as well on high flow aftermarket?
If someone could help me figure this out
Chris