Valve Springs for Trick Flow stage 2 cam
 

Looking to get a Stage 2 Trick flow cam.

Here are the specs:


**Posted wrong specs... look below for correct specs.**

Now, going to be running a set of ported Gt-40 irons, Long tube headers. ported Weiand stealth Intake and 650 D.P. Carb. Not sure what info you need to help me.. I just need a good set of quality springs. Im comfortable with Crane. Comp and Lunati.. any others im open to suggetsions.

Thanks
Bradley

what kind of pistons are you running and are they notched

.030 over Forged 97-93 pistons

Oh and sorry those are the wrong specs above..

Here are hte right ones

Specifications:
* Advertised duration: 286 intake/294 exhaust
* Duration at .050 in. lift: 224 intake/232 exhaust
* Gross lift: .542 in. intake/.563 in. exhaust
* Lobe separation: 112 degrees
* RPM range: 2,500 to 6,000

Thanks
Bradley

Here are the spec's for the TFS Stage 2: (Use the valve spring TFS specifies at the bottom) You will need to flycut the pistons.

TFS-51402001

Valve Setting Intake: .000 in.
Valve Setting Exhaust: .000 in.
Advertised Duration (Degrees): 286 intake/294 exhaust
Duration at .050 in. Lift (Degrees): 224 intake/232 exhaust
Camshaft Lift: .339 in. intake/.352 in. exhaust
Valve Lift with 1.6 Rocker Arms: .542 in. intake/.563 in. exhaust
Lobe Separation (Degrees): 112
Intake Cam Timing at .050 in. Valve Lift:
Opens 5 degrees BTDC
Closes 39 degrees ABDC
Max lift: 107 degrees ATDC
Exhaust Cam Timing at .050 in. Valve Lift:
Opens 53 degrees BBDC
Closes 1 degrees BTDC
Max lift: 117 degrees BTDC
Firing Order: 1-3-7-2-6-5-4-8
Camshaft Notes: Fair idle, good midrange power. Aftermarket intake, heads, headers, and modified Mass Airflow sensor required. 2,500-3,500 rpm stall converter or 5-speed with 3.55 in. or higher rear axle gear recommended. Best with 9.5:1-11:1 compression ratio.

Recommended Components: TFS-51402001
Valve Springs with 1.6 Rocker Arms: TFS-31400414
Valve Springs with 1.7 Rocker Arms: TFS-31400414

Thanks for that info man.. My rear gear, tranny and compression fit right in with that cam I hadnt seen a spec list that long for this cam so now I know I'm good to go.. As far as fly cutting the pistons.. The pistons are still in the motor.. guess it'll be with the ole hand grinder.. I dont know how to degree a cam or do all the measuring for vavle clearance but the giuy whos shop I use does.. Thank goodness What rockers do you recommend?? 1.6's or 1.7's I will be looking for a used set to start with..

Thanks again
Bradley

I would stick with the 1.6 rocker ratio with that cam. The extra lift the 1.7's will give wont help much because you'll probably be flowing to your GT-40 full potential with a .542 lift anywise. Has the short block already been done?

Murdock

So you think that the trick Flow stage 1 with a set of 1.6 rockers is what to go with... What about Valve sizing? Should I keep these stock or swap in bigger valves. I am going to drill the heads and use studs instead of pedestal mount rockers though..And the short block is already done. Taking it out of the race car..

Bradley

Ok...Bradley your getting me confused man:) Are you wanting the Stage 1 or 2? Your valve size is 1.94/1.60's in the GT-40's I believe. I wouldn't change the size, your only feeding at most a 4.030x3.000 hole. You will be fine. I have built cars that are in the 11.5 second range with this cam. Not bad at all for an off the shelf camshaft.

Murdock

Im not sure what cam I want. I can get either cam, I want the cam that will suit me best. (obviously) I just dont know which that is. Most people have told me to run the Stage 1 with ported heads and 1.6 rockers. And if the valve sizing upgrade is going to not help me.. ( the more I think about it I realize it wont )I just wont do that. I will invest in some good stainless valves. I think I can get a set for about $80 bucks.

Bradley

I've got a Stage 2, and the springs you need are fairly strong. TFS has a kit, valve springs, seals, shims, locks, retainers, valve height gauge. This is part number 2500200 and from summit. Its expensive, but worth it. I have 1.90 valves and had to notch the pistons some more for clearance.

Thanks for that info 86 gt. Do you have 86 style pistons or 87-93 dished? With the option to get either of the cams.. I need to get he stage 1 ( from a buddy) and jsut check the clearances.. then look at the numbers of the stage two and see which I can use. I think I could do that..

Bradley