[trex70]

well, I got my new thumper cam in and am going to start putting it in on Monday!!! This cam has a lot of duration and modete lift.

cam specs are: lift ex .519, int .532, duration is 319. valve timing: open 19 btdc, close 43abdc on the intake. exhaust is 60 bbdc and 16 atdc. lobe seperation is 107. I went ahead and ordered a vacuum can and bee hive valve springs and against comp cams I got a noisey gear drive. I only drive this car about 750 miles a year, so I am not really concered with drivability. I only wonder if I helped or hurt my horsepower. I am at about 450 now with around 480 torque.

the rest of my motor specs are 383 ci 10.41 compression with aluiminium heads that I have no idea who makes them. The only thing I can find on them is "pro" and 180, so, I am thinking the are pro action? Well, when it is done, I will let you all know how it sounds and runs.

[pdq67]

Those must be the duration at .050" numbers b/c they add up to be 242 and 256...

Yes, please keep us informed.

THX!!

pdq67

[ZZ430DropTop67RS]

Sounds lumpy to me!

[trex70]

The cam is in!!!Great googly mooley! That sucker sounds BAD. I couldn't drive it too hard cause of the rain today but it does have a lot of power. I had a hyd. .480 lift with 280 duration(at.50) and the difference is amazing! The gear drive whine! I will not get any sleep tonight!

[zdld17]

what part of taxus u from boy?

[wiskeesour]

that does it! im getting one.

[trex70]

Originally Posted by zdld17

what part of taxus u from boy?

I be from Longview....About 125 miles east of Dallas on I-20...you ever in the area look me up.

[zdld17]

Originally Posted by trex70

I be from Longview....About 125 miles east of Dallas on I-20...you ever in the area look me up.

lYes, my best buddy kids, Campbell live there as well as Jim, the Trifive parts man. Usually stop by on the way to the boat.

[trex70]

got to drive the camaro today...this camshaft took alot of beating from people on this web site...everyone was wrong. this sucker has a lot of power and revs fast. I had about 450 horse, my butt dyno says atleast 500 now is runs awesome, sounds awesome and with the bee hive valve springs raps really good.

[zdld17]

There are 3 versions, which one did you get? Hyd flats?

[trex70]

bottom page "mutha thumper" , 319 duration 531 lift yadayadayada!

[trex70]

oh yeah, this grind is similar to their endurance racing grinds!