496 for my corvette

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hitchcock
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496 for my corvette

Post by hitchcock »

I have talked about my 496 for my 3500 pound corvette on here before. The motor is at the machine shop being bulit now. So far it is a canfield 310cc. 113 cnc chamber head with a full port , srp 18 cc. dome pistons, Weiand Team G. with a 1150 (7320) dominator. And I just got word from the machine shop about the cam. I know I'm no pro builder or anything but I'm confused on how this is gonna work. So here is the cam,




And to say I was suprised is an understatement. After I was told what the specs were my jaw dropped and I reminded the machinist it was a pump gas motor and his response was "thats what I told comp cams and this is what they said to use" He has been working with Tim Cole from Comp Cams who is in the R&D department now, and a seasoned super stock racer. Tim told my engine builder(steve) that my skepticism would end when I drove the car, and this cam would exceed my needs and be fine for a 10.75:1 motor. Oh, well if it's not fast at least it will sound good. So here it is...
4/7 swap solid roller
Intake Exhaust
Lobe lift .470 .435
Valve Lift .775 .735
Duration @.050 281 294
Lobe Sep Angel 114

I dont remember what the intake centerline was I will find out and update you.

I am really interested in hearing some opinions on this set up from some of you guys. Just be gentle, this is my first build.
73 vette 496, tunnel ram pro systems 950's and way too much cam!
RW TECH
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Post by RW TECH »

What would round out the package is a loose converter and about 3.5 points more compression.

Do you plan on driving this thing much? So far it doesn't look like it.

Can you please explain what it's actual use will be?
hitchcock
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496 vette

Post by hitchcock »

I have a T.C.I. 8" converter that will go to about 5200 rpm. And as far as the compression Comp Cams insisted this is the cam for me to go with. It's basically a super stock cam itself. At this point, I'm just gonna have to put my faith in Tim Cole at comp. And my engine builder say's tim has never let him down. One thing I forgot to mention is my heads have a cross section of 4.2 total after the full port. 1.75x2.45
73 vette 496, tunnel ram pro systems 950's and way too much cam!
bigjoe1
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camshafts

Post by bigjoe1 »

You are about 15 degrees too big and the lobe center is too wide. That might make a good race cam, with 14 to one compression, but it is out to lunch for your application.


JOE SHERMAN RACING ENGINES
hitchcock
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Post by hitchcock »

Thats what I thought. I was expecting something a little like .725 .725and 262 275 @.050 with a 108 LSA.
73 vette 496, tunnel ram pro systems 950's and way too much cam!
blue66
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Post by blue66 »

hitchcock wrote:Thats what I thought. I was expecting something a little like .725 .725and 262 275 @.050 with a 108 LSA.
That would be more like it.
66 Chevelle SS
496, 10.5:1 Pump gas, no dominator, no spool, no electric fuel pump, no electric water pump, no big tires, full interior...............Just a street car.
3600#'s
6.27@109
9.92@133
hitchcock
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496 vette

Post by hitchcock »

Blue 66 would you mind giving your cam specs?
73 vette 496, tunnel ram pro systems 950's and way too much cam!
blue66
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Post by blue66 »

Sure, you have seen them already probably, from that outrageous engine combo site, I posted on your thread but here they are.

I301, E304, I267 E271, I.709, E.690 109LSA 103ICL

Brian
66 Chevelle SS
496, 10.5:1 Pump gas, no dominator, no spool, no electric fuel pump, no electric water pump, no big tires, full interior...............Just a street car.
3600#'s
6.27@109
9.92@133
WAWA
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Post by WAWA »

I'm sure your aware but there is no way that combo will fit under the stock hood, you will need a scoop.
Then the next problem is what to do with the rear suspension which is a real weak link in any corvette.
Just what year of corvette is it?
hitchcock
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496 vette

Post by hitchcock »

Yeah, I've got a hood with the l-88 scoop style that is 5" tall. As far as the rear end it's a 9 in ford with strange axles and a 4-link. And It's a 73 vette. It should be a lot of fun when we finally get it all together.
73 vette 496, tunnel ram pro systems 950's and way too much cam!
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