New Cam going in, which timing chain? Stock replacement?
 

I'm getting ready to install my new Crane Compucam 2031, I have 128k on the motor and if course I'm going to replace the stock timing chain, will a stock replacement work? Also should I just install it straight up? Also is there anything else that I should go ahead and replace while doing the job? Thanks

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87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 12.96
Best MPH 103.42
Best 60' 1.695

Visit my site at:
http://www.geocities.com/cobrar93_2000/MyPage.html

Spend the $60 on a FRPP double roller...that's what I used.

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Clint L.
White 95 Cobra #3637
58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW lower control arms, Steeda CC plates, aluminum driveshaft, Steeda quadrant, MSD6A, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s
13.61 @ 104.7 w/ 2.22

Listen to Tex.....go w/ the double chain!

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'90 LX 5.0; 12K original miles (no sh*&); 3.55 gears; pulleys;Edelbrock Performer Heads; BBK shorties; MSD 6AL box w/ blaster 2 coil; Motorsport E303 cam; Pro-M 75mm MAF; BBK 70mm TB; Eibach spring kit; Southside welded subs; K&N cone filter charger; Hurst shifter; fiberglass turbo hood; A/C-less; rear seat-less; cat-less; 2 chamber Flos; Corbeau racing seats (fronts);
30# injectors; 190 lb fp; FPR; TFS track heat Intake - 12.513 @ 112 mph (Pre-inj/fuelpump/FPR/intake)

I know that, that one will work but will a stock replacement one work? Thanks for the input.

I'm sure the stock one would work, but why skimp? It's probably not much less than the double roller.

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Clint L.
White 95 Cobra #3637
58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW lower control arms, Steeda CC plates, aluminum driveshaft, Steeda quadrant, MSD6A, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s
13.61 @ 104.7 w/ 2.22

Ok, thats the one I will go with. Tex, how do you like that cam? Does it sound pretty mean? And how does it pull? Thanks

I love the cam. It pulls like a SOB once you get close to 3k. It has a nice lope and shakes the car a bit, and 900 is about the perfect idle. I've gotten many complements on the sound at idle with my ultra flos and dumps. I have a good mph, but my ET suffers b/c of the 308s since it takes a bit for it to wind up. It's kind of rough when you start it first thing in the morning, but after 1 min of driving it smooths out nicely.

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Clint L.
White 95 Cobra #3637
58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW lower control arms, Steeda CC plates, aluminum driveshaft, Steeda quadrant, MSD6A, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s
13.61 @ 104.7 w/ 2.22

93CobraR - You will really like the 2031. It has a pretty mean idle, really kicks in at 3K, and pulls like a mofo clear to 6K. Mine idles around 750 or so and sounds great. When I put it in I used the FRPP double roller (made by Cloyes). Cheap insurance if you ask me. A standard replacement will work though. I installed mine straight up. You could retard it 4* and gain about 10hp up top, but you will lose the same down low. You could replace lifters since yours have 128k on them, but the stockers should work as long as it is running fine now. I reused mine, but only had 80k on them. I also put a new water pump on mine when I had everyhting apart.

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91 GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, Flows w/dumps, FMS 4.10's, Steeda STB, StangNet LCA's, for now...

Original GT-40P Tech Page

You and I are in the same boat - I'll be doing a cam swap in the next month or so - I'm going with the Crane 2031 also.

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TM88GT

Thanks Josh. I have new lifters, they only have about 10 miles on them since the head swap. Also which cam pin do you use? The long? short? or stock? Thanks agian

Hey 93CobraR, you helped me out on wheels not too long ago, maybe I can help you out here. I also have the FMS double roller and it works great. I installed it straight up. This is the best way for a street driven N/A car.

Make sure you install it straight up, a buddy of mine tried to rush and put his car together and he put the timing chain (Edlebrock multi-index) on advanced. The exhaust valve kept hitting the piston, I couldn't figure out why. I told him that if the valve timing is off the valves would hit the pistons. He swore that it was straight up, but with that dumb look in his eyes I didn't think he knew that when I said straight up.

Well, he put it together before I got there and he threw away the box and I didn't know if it was a multi-index chain or not. I finally figured it out and it runs great now.

BTW, I have the Chrome Cobra R rims (17x9) on my car and it looks sweet. I will post pictures sometime soon.

Yeah, thanks. Where did you end up getting your rims from? I planned on installing it straight up. Also what about the cam pin?

I bought my rims from a Belle Tire that my buddy works at.

What did you want to know about the pin?

My cam came with 2 different pins that go in the end. A long one and a short one, which ones do I use? Thanks

My cam only came with one pin. Measure the approximate length and I will measure the length of the pin in my E cam fresh in the box in my room. It might depend on how deep the recess on the cam is, and how thick the timing chain is (dual roller vs. single). I am not for sure though. Maybe someone else can chime in and let us know for sure.

I put a 2031 in about 4 months ago. Somewhere in the instructions it tells you which pin to use, I can't remember where. I think I used the short one - I don't think the long pin will fit when you try to put the gear back on.

Ok, thanks. I got everthing clean and ready to go back together. Withamc which heads did you used? and Did you have to get new pushrods? What about you Josh?

93CobraR - Sorry for the long delay, haven't checked this site for a while. I used the stock pushrods. I get quite a bit of valvetrain noise though, but I think it is from the noisy 1.7 rockers and using stock pushrods with my P heads that have been milled .030. I probably shoulda got a new length, but it wouldn't have been hardly any difference. I should just re-torque the rockers and it would probably fix it. As for the cam pin, I am not sure which one we used.

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91 GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, Flows w/dumps, FMS 4.10's, Steeda STB, StangNet LCA's, for now...

Original GT-40P Tech Page