Sorry, posted in the wrong thread.
68' 429 ThunderJet
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68' 429 ThunderJet
Hey all,
I've got a 68' 429 ThunderJet in my LWB 66' F100. It's pretty much stock aside of carb, intake, dist., and ignition. I'd really like to throw a little hotter cam. I've been looking at a Comp Cams Thumpr cam and lifters kit with new valve springs, etc... Lift .506/.493
My curiosity is running this cam with my essentially stock heads. I do not plan on doing any kind of racing. I rarely get over 2500rpm. I would just like that nice lopey idle.
Any help would be great.
Thank you,
Jesse
I've got a 68' 429 ThunderJet in my LWB 66' F100. It's pretty much stock aside of carb, intake, dist., and ignition. I'd really like to throw a little hotter cam. I've been looking at a Comp Cams Thumpr cam and lifters kit with new valve springs, etc... Lift .506/.493
My curiosity is running this cam with my essentially stock heads. I do not plan on doing any kind of racing. I rarely get over 2500rpm. I would just like that nice lopey idle.
Any help would be great.
Thank you,
Jesse
Cargo Master
Joined: Nov 2009
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From: starship enterprise
That thing should have monster torque on the bottom end with a mild cam and the high compression. I will say this: Get new valve springs atleast, and make sure you have a new timing set and new lifters, but that cam at basically 500 lift is going to be pretty mild, my 545 has a 274/286 560 something lift and it lopes, snorts, and flat rips.
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Hey guys, it's been a bit since I've been able to get back to this. The heads
have what looks to be " C8VE-E " for a casting number. The 8 could be a 6 as I didn't have much light.
Anyone know much about these heads?
have what looks to be " C8VE-E " for a casting number. The 8 could be a 6 as I didn't have much light.
Anyone know much about these heads?
Elder User
Joined: Apr 2006
Posts: 506
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From: mid-MO
Angry, you have c8 head castings. To my knowledge there are no c6 casting heads. The heads are good, as they have the 75 cc chambers and the motor has a high compression ratio (around 11:1 I think). I would say for what you want the cam you selected would be a good choice for your application. I think your valve springs would be borderline on the lift as far as needing to change them out, but if you have the money to do it, I would go ahead and do it. When in doubt, ask the cam mfg if stock springs will work with their cam
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