j.d.duggan
Well-Known Member
what cam could I run for a mild street build?don't want to worry about valve clearance,or pushrod lengths.just a little more power and maby a little lope.340,.060 over,915 j 1.88 heads.any thoughts?
Good call IMO. I run the Hyd. roller version in the wife’s 360.This one will give you some lope, and still have decent vacuum.
I have it in my 340.
Lunati Voodoo Camshafts 10200703
This one will give you some lope, and still have decent vacuum.
I have it in my 340.
Lunati Voodoo Camshafts 10200703
I disagreeWyrmrider says:
btw lope and broad power range are incompatible given what you want to change-
I agree with everything above except, how do you know it is a low compression engine? Not because he has J heads is it?go for power- change your mufflers if you want sound
post your compression, gears carb and headers and you will get another round of opinions that are closer to the mark
stock 340 cam in low compression motor leaves a lot on the table without converter and gears
I agree but this cam does require valve guides to be cut. Or at least it does on my 360 heads! Im going with one size smaller. The lunati voodoo 10200702.This one will give you some lope, and still have decent vacuum.
I have it in my 340.
Lunati Voodoo Camshafts 10200703
I agree but this cam does require valve guides to be cut. Or at least it does on my 360 heads! Im going with one size smaller. The lunati voodoo 10200702.
For stock heads I agree with toolmanmike and RRR
what cam could I run for a mild street build?don't want to worry about valve clearance,or pushrod lengths.just a little more power and maby a little lope.340,.060 over,915 j 1.88 heads.any thoughts?
Well, I'm actually kind of partial to the solid roller @ [email protected] w/ .650 lift myself.....My vote is a Comp XE268
I didn't quote the cam, gears, and single plane I'd strap on it, I like stuff that comes to life at 3000 RPM and up!Well, I'm actually kind of partial to the solid roller @ [email protected] w/ .650 lift myself.....
The 65 cc is probably an NHRA spec. What that means is that 65 cc is the minimum combustion chamber volume which these heads can have after modification and still be competition legal; in other words, it is a competition spec, not a production head spec. The production chambers have been repeatedly measured and come out in the 70-73 cc range with consistency. Having a clean face may or may not mean they have been milled. So until these are cc'd, you really don't know what you have.nm9 all I,ve found on the 915-j-1.88 heads say there 65cc and I would think they were surficed,I didn,t cc them but they had good clean face.
You'll never know exactly where you are until you measure it while assembling the engine.The 65 cc is probably an NHRA spec. What that means is that 65 cc is the minimum combustion chamber volume which these heads can have after modification and still be competition legal; in other words, it is a competition spec, not a production head spec. The production chambers have been repeatedly measured and come out in the 70-73 cc range with consistency. Having a clean face may or may not mean they have been milled. So until these are cc'd, you really don't know what you have.
This is why the advertised 10.5 static CR for the early 340's is not the reality in most cases; it is based on some minimum production or NHRA head chamber spec, not typical production heads.