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Old 09-21-2010, 05:54:48 PM   #1
rtanner
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1970 350/370hp cam specs

hey guys getting ready to install my cross ram on the 73 z28, whats the specs on the 70 model lt1 cam, and who makes it now, brand and part# please, thanks, oh and yes im sure theres something more modern but im not interested, thanks,
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Old 09-21-2010, 07:11:12 PM   #2
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http://www.nastyz28.com/camaro/z28lt1.html
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Old 09-21-2010, 07:16:00 PM   #3
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Cam 3972182 3972178 symbol: Solid lifter - 0.458(I)/0.484(E) lift, 317I/346E duration . crane blueprint cams, try those.
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Old 09-21-2010, 07:22:53 PM   #4
KansasTwister
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cranes out but elign sells one at speedway motors. We went over this topic when pdq67 was still around.
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Old 09-21-2010, 07:28:11 PM   #5
KansasTwister
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http://www.competitionproducts.com/E...ductinfo/E904/


should be the same cam.
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1980 Camaro Berlinetta 1979 Camaro Berlinetta w/ T-tops

theflash: Black smoke is generally a sign of running too rich, or you have a diesel.

I want to die in my sleep like my grandfather.... Not screaming and yelling like the passengers in his car.

My nametag says Ryan
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Old 09-21-2010, 07:40:27 PM   #6
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put a GM #140 in the 350 ............you'll really like how it sounds and it'll pull really hard in the midrange and this cam was designed for multiple carb applications especially for the DZ302

257/269 @ .050 493/512 lift 112 LSA 4200-7200rpm
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1972 chevy camaro ss

1970 LT1 350sbc / 425hp 11.1:1 comp, GM #140 off-road solid lifter cam ,holley strip dominator
2" open spacer and holley 750dp ...........all old school 70's performance parts

old school pic

my old school camaro idle video
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Old 09-22-2010, 09:44:23 AM   #7
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thanks guys, i found that cam for 69 bucks haahaha, what a deal, a cam that will idle 800-and rev 7grand, for 69 bucks, and not have lobes go flat and last for thousands of miles, thanks chevrolet!!!! i need a part #and mfg for that gm 140 i will buy one and swap out the lt-1 cam after i have a few thousand miles on the combo and some really good documented performance numbers, not alot of people running the crossram on a daily driver 350 second gen,
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Old 09-22-2010, 10:14:54 AM   #8
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was the 70 z cam refered to as the .030- .030 cam or was that the 375 fuelly,that cam went 100,000+ miles in a 64chevelle ss 4 speed 283(301)cu.in. back in my day, was a lot of fun but had no low end torke, would be side ways with the 308posi tell at 6000 rpm.,,small yellow line 14" tires,car was yellow so tires matched the car
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Old 09-22-2010, 10:20:05 AM   #9
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Quote:
Originally Posted by hogg
was the 70 z cam refered to as the .030- .030 cam or was that the 375 fuelly,that cam went 100,000+ miles in a 64chevelle ss 4 speed 283(301)cu.in. back in my day, was a lot of fun but had no low end torke, would be side ways with the 308posi tell at 6000 rpm.,,small yellow line 14" tires,car was yellow so tires matched the car
30/30 cam was the '68-'69 302.
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Old 09-22-2010, 10:24:37 AM   #10
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http://www.gmpartsdirect.com/perform...CATID=826.html
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Old 09-22-2010, 10:32:03 AM   #11
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No it's not the 30-30, that's a good cam, yes that bottom end torque comment had been floating around for years, I think the cam companies forced the magazines to print that bs back in the 80s, here's my take on it had, rode in and drove all kinds of factory and home modded small blocks, back in the day, and I promise you a 69z w a big cam, and a boss 302, w giant intake ports drove just fine up and down the drag, and guys nobody floored there small block at low rpm anyway, we pushed in the clutch wound her ip and side stepped em!!!!! W today's 3500 stall converters I don't see automatics being a problem either, we fixin to see real world driving a cross ram lt1 cam, th-350 3500, and 3.73s
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Old 09-22-2010, 02:04:45 PM   #12
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Does anyone know actual SEAT duration on the LT1 solid cam when lashed at factory .024/.030? Just curious how advertised numbers relate to what really happens at the valve, and how "big" this cam really is based TRUE seat duration. In my mind, this would make is easier to relate the LT1 cam specs to the common duration @ 0.006" most of us are used to seeing for moder hydraulic cams.
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Old 09-22-2010, 02:20:30 PM   #13
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I've been thinking seriously about getting a crossram for my 350, but the setups I have seen are mucho bucks. As far as GM solid lifter cams, you could always go with the 1st design offroad cam. Don't remember the # but IIRC it had .512 lift and about the same duration as the Duntov 30-30.
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Old 09-22-2010, 03:53:51 PM   #14
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Quote:
Originally Posted by rockheadrocks
I've been thinking seriously about getting a crossram for my 350, but the setups I have seen are mucho bucks. As far as GM solid lifter cams, you could always go with the 1st design offroad cam. Don't remember the # but IIRC it had .512 lift and about the same duration as the Duntov 30-30.


i'm running that cam the gm #140 257/269 @ .050 493/512 lift 112 LSA 4200-7200rpm ................... this is an awesome cam that pulls really hard in the midrange oh and it sounds really aggressive at idle
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1972 chevy camaro ss

1970 LT1 350sbc / 425hp 11.1:1 comp, GM #140 off-road solid lifter cam ,holley strip dominator
2" open spacer and holley 750dp ...........all old school 70's performance parts

old school pic

my old school camaro idle video
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Old 09-22-2010, 05:38:52 PM   #15
rtanner
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need a part number and supplier for the 140 cam please, competion products has the lt1 for 69 bucks cheap cheap!
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