can someone post some stock cam specs for a base 210 h.p. 327 68' motor. i tried some internet sources but there not so reliabe. also if i take the existing cam out which i believe is not stock would it be wise to go with a solid lifter 30/30 cam like in the 302's?
327 cams.
ace's68
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can someone post some stock cam specs for a base 210 h.p. 327 68' motor. i tried some internet sources but there not so reliabe. also if i take the existing cam out which i believe is not stock would it be wise to go with a solid lifter 30/30 cam like in the 302's?
Joined
·
278 Posts
Engine
327
power
210
lifter
H
Intake Lift
.390
Exhaust Lift
.410
Intake Duration
310
Exhaust Duration
320
327
power
210
lifter
H
Intake Lift
.390
Exhaust Lift
.410
Intake Duration
310
Exhaust Duration
320
Joined
·
22,190 Posts
The 327-210 used the -929 cam, same as the 327-275, I believe the L48 350 used it too, as did a bunch of other chevy models in that period.
The advertised duration #'s are VERY misleading. This cam has slow, lazy ramps, and a duration @ .050" of around 210.
The advertised duration #'s are VERY misleading. This cam has slow, lazy ramps, and a duration @ .050" of around 210.
thanks i noticed the cam is very lazy at idle, lazy as in very slooow lopes it sounds great could be louder though
. for a stock cam in a 210 h.p. with 1.72 valves thats a big cam.ya i got a edelbrock performer carb along with a performer e.p.s intake, hedman hedders, h.e.i distributor and a complete re-build on the motor with performance internals, im not sure but i think the guy who sold me the motor had about 2k into the stock heads not sure what all they did to them but the motor had no oil in it what soever.
The stock cam specs are 195/202@.050, .390/.410 lift on 112 or 112.5 lobe centers. GM rates its cams weird, at like .001 lift, which makes them look huge when really they aren't. IIRC, valve timing at .006" (like comp cams uses) is about 254/260.
Oh, BTW, the 30/30 cam is a BAAAAD choice for what you have.
Oh, BTW, the 30/30 cam is a BAAAAD choice for what you have.
thats small duration if its even right. y is it a bad choice? cause of the crappy heads? i am getting 2.02 heads soon with 65 cc chambers
Because even with 64cc heads your still going to be under 9.5-1 compression...and the 30/30 is quite large and really needs about 11-1 to really run its best. The 30/30 is 254/254@.050, .485/.485 gross lift, 114lsa, 4* advance ground in.
What tranny/convertor/rear gears will you be using? What is the intended useage? Your intake and carb are also not matched for such a huge cam. What exhaust system will you be running?
What tranny/convertor/rear gears will you be using? What is the intended useage? Your intake and carb are also not matched for such a huge cam. What exhaust system will you be running?
Travis is right about the old 30-30 solid cam b/c it really needs 11 to 1 CR to run right, imho!
BUT the little-bitty, Duntov, -097 solid cam will do you nicely! It's like 287/228/287/230, 110.5/108, .385" net lift at .012" and .018" lash. I figure that it is really a checked the modern way, a 270 solid cam here b/c GM was always out to lunch the way they checked them back then!!
The old Duntov is the 315hp/283 and 340 and 360hp/327 cam! One heck of a great cam inho!!
As will this little solid cam from PBM Performance, their PN 240156 at 266/218/278/228, 114/110, .457"/.479" gross lift and need's .022" lash on both valves!
pdq67
BUT the little-bitty, Duntov, -097 solid cam will do you nicely! It's like 287/228/287/230, 110.5/108, .385" net lift at .012" and .018" lash. I figure that it is really a checked the modern way, a 270 solid cam here b/c GM was always out to lunch the way they checked them back then!!
The old Duntov is the 315hp/283 and 340 and 360hp/327 cam! One heck of a great cam inho!!
As will this little solid cam from PBM Performance, their PN 240156 at 266/218/278/228, 114/110, .457"/.479" gross lift and need's .022" lash on both valves!
pdq67
I could be wrong, but I believe it is ground on a 110 ICL. In any case, its still a big cam.
with flat top pistons and 64 cc chambers i would be at 10.25:1 compression. flowmaster 40 series mufflers 2.25" pipes . the intake is good to 5500 rpm. i might just scrap that intake get a smaller carb and a victor jr. but i just want a solid cam so i can rev t to like 7k and not really worry about floating the valves.
From John Z:
Standard 302 (30-30) cam, P/N 3849346
Casting #3849347
254 duration @ .050" (intake & exhaust)
.485" lift (with 1.5 rockers)
114 deg. lobe separation
Exhaust Max lift @ 116 deg. BTDC
Intake Max lift @ 112 deg. ATDC :thumbsup:
If the 30-30 was on 110* lsa it would really lope.
The 30-30 is 254/254 @.050". Because the LSA is 114* it does not sound big. If it was 110* it would most likely sound big.
ok so less lobe seperation makes it more lopey? sry if im getting annoying im still learning.
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