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harshman
10-12-2004, 10:05 AM
Ok boys,
I need some cam advice for my car.
Car specs are as follows:
’68 camaro
402 (396) bbc
torker 2 manifold
iron oval heads - stock
compression @ 10.5-11:1
t56 trany
4:11 gears
26” tall tire
3400 lb car
street/strip/road course

I just got off the phone with comp cams and they recommended their 11-213-3

11-213-3 specs
Advertised duration: 292/292
Duration @ 0.50”: 244/244
Lift - .550/.550
Lobe sep.: 110 degrees
Range 2,500-6,500

Any opinions? oh and BTW, i love to hear every piston (rough idle)

Foudie
10-12-2004, 02:27 PM
Uuh.....it's red.....um....it's blown.....Brad? :hammer:

kman67rsss
10-13-2004, 05:08 PM
i just got my car running on monday and i have a 1970 402 bored to a 414, air gap man. 11:1 comp tko 600 4.11 gears and 26 inch tall tires and i am running a howards hyd. roller cam, 236/242 612/612 lift. for the 15-20 min i had it running it sounded awesome, could hear every cylinder fire. o this was a a 110 lobe i believe

Lowend
10-15-2004, 08:50 AM
I will recomend the Isky Solid Roller
RR-620
248@050
.620 Lift
108 Lobe Seperation

The cam should make power into the mid 6000RPM range and the 108 lobe seperation will give you a nice choppy idle

My427stang
10-16-2004, 08:48 AM
In the 402 we are building, we decided to go more radical, but prior to that, the car ran one step down from what you have and he was never really happy. Basically with the oval ports, a T2, a 4 speed, etc he got to a best of 12.40's and there may be 12.1's - 12.2's in the setup bats about all there is.

With 240-ish @ .050 you are just where you want to be and where he should have been first time through (but I wasnt involved then :). By no means will it be mild, in my 427 Ford I run [email protected] and its streetable but on the edge, your cam is a smidge milder, but on a smaller motor

That cam should have some real good shake, pull like gangbusters through the mid and run to about 6500 with the heads and intake you have. Should hold lash well as the ramps arent too steep with that lift and duration level, basically a good cam for your setup I am sure you'll be happy

For those who run solid rollers, I have had two engines come in both that lost solid rollers at about 3000 miles. Both were Rat motors that were built by one of the local high dollar shops and done nicely. The last one disintegrated a roller, got a little loud on I-95, and the crap opened the bypass on the filter, then the junk just flowed and took out 2 rods, all the bearings and ruined a Lunati crank

I discussed it with Comp and they say the solid roller is only good for 300 passes max, thats 75 miles if you go in straight mileage, but for the street RPM is lower but still. They said regular solid rollers shouldnt be on the street, and although many companies are making oiled rollers, they said that its still "limited" street, but wouldnt sign up to what limited means. Basically, the lash hammers out the wheels and then without warning they disintegrate, add to the the lack of oil being thrown around by the crank at low rpm, stoplights, etc, make it a tough environment for those little cam followers to live in.

Now I know lots of guys have had luck, but for a street car I go solid flat tappet now, especially if we reduced windage off the crank. Matter of fact we are going to convert a buddies roller 351C here soon, not because of problems, but becuase he saw the effects and lack of warning and just doesnt trust it on a long run

Just my 2 cents, but for the cash spent and possibly lost, I dont recommend them for anything that you are putting miles on

kman67rsss
10-17-2004, 07:54 AM
my427, what/whose cam are you referring to?

My427stang
10-17-2004, 02:51 PM
Sorry, I didnt realize the original question was old.

As far as the "good choice" comment I was talking about harshman's. I am of course assuming its a flat tappet cam

My whining about rollers, was to no-one in particular and certainly not to your choice as hyd roller. I like a hyd roller in almost all cases, and I think yours is a good choice as well

I just dont like the idea of solid rollers in a regularly driven street car

kman67rsss
10-17-2004, 05:55 PM
dont woory, i didnt take it as whining just curious as there were 3 cams listed.

harshman
10-18-2004, 08:34 AM
Some questions that I forgot to ask: will this cam be ok for cruising at 2,000 rpm? And what do you think of this from Jeg’s website on this cam: “Note: In order to use these camshafts in 1965-66 396/427ci blocks, it is necessary to machine a 3/16'' wide x 7/64'' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine.”?

Lowend
10-19-2004, 09:23 AM
That is true of every BBC cam made... early 396's had a slightly different oiling system and hence the groove. Its easy to modify a cam with that groove
2000RPM cruise - that is a little low for the cam I suggested
I would knock a solid roller down to 240@050 a flat tappet down to ~235@050