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Old 04-22-2012, 02:05 PM
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what do you think h.p. and 1/4 mile times may be?

i have a 68 camaro tubbed with 30x13.50 tire 4.88 gears dana 60 turbo 400 3500 stall...flat top piston 1975 454 with closed chamber heads (3904390 heads) with a valve job & rebuilt with stock size valves,the mutha thumpr cam with 243/250 @050 522/507 cam headers rpm air gap intake & 750 dbl. pump holley...now i know that it seems over cammed but the compression was 175 psi in every cylinder...just wondering what you guys would think i am making horespower & torque at the flywheel...car weighs 3300 lbs with me, what is your guess for quartermile times with this combo...thx..

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Old 04-22-2012, 03:06 PM
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Quote:
Originally Posted by beata
i have a 68 camaro tubbed with 30x13.50 tire 4.88 gears dana 60 turbo 400 3500 stall...flat top piston 1975 454 with closed chamber heads (3904390 heads) with a valve job & rebuilt with stock size valves,the mutha thumpr cam with 243/250 @050 522/507 cam headers rpm air gap intake & 750 dbl. pump holley...now i know that it seems over cammed but the compression was 175 psi in every cylinder...just wondering what you guys would think i am making horespower & torque at the flywheel...car weighs 3300 lbs with me, what is your guess for quartermile times with this combo...thx..

anybody have an opinion good or bad
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Old 04-22-2012, 04:50 PM
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Have you used the free Comp Cams Cam Quest software? You can "back into" the cam you want to see the estimated dyno results for by entering all the info on your engine combo then scrolling through their suggested cams. If you are even close, your cam should be among their suggested cams. If it isn't, by their way of thinking the cam's a mismatch for the combo.
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Old 04-22-2012, 11:48 PM
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There are better ways to get answers around here, the first is being clear with the subject that you are asking about. What do you think.. about what? the weather? hot chicks? You have to be clearer or most guys will skip over your thread. I will edit this in hopes someone will help out.
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Old 04-23-2012, 07:36 AM
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those cams have proven to be "all talk and no action" cams. they make a nice lop but they dont perform as they sound. i'm gonna take a stab in the dark here and guess that you are making in the mid 400's hp and high 400's to low 500's tq. with the guess in mind i would say that you would probably see around a 12.00 in the 1/4mi.
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Old 04-23-2012, 08:05 PM
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This is what time trial day at the track is for.
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Old 04-24-2012, 05:05 AM
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Quote:
Originally Posted by my87Z
those cams have proven to be "all talk and no action" cams. they make a nice lop but they dont perform as they sound. i'm gonna take a stab in the dark here and guess that you are making in the mid 400's hp and high 400's to low 500's tq. with the guess in mind i would say that you would probably see around a 12.00 in the 1/4mi.
I've seen just the opposite actually. They perform quite well for being labeled as a cruise-night cam.

As for his car, the converter isn't optimal for the cam he's running, the heads are too mild, and the carb is on the small side. I don't think it will get quite down to a 12.00, it should run in the 12's but i'd say it will be a 12.60-12.70.

Not to mention neither of us know where the OP is located, lol. He could be in Denver up in the mountains.
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Old 04-24-2012, 11:11 AM
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Quote:
Originally Posted by joelster
I've seen just the opposite actually. They perform quite well for being labeled as a cruise-night cam.

As for his car, the converter isn't optimal for the cam he's running, the heads are too mild, and the carb is on the small side. I don't think it will get quite down to a 12.00, it should run in the 12's but i'd say it will be a 12.60-12.70.

Not to mention neither of us know where the OP is located, lol. He could be in Denver up in the mountains.


for the most part these cams were developed for a person who want a street engine but yet wants the race engine sound. so by this idea, what i mean is the engine may sound nasty but doesn't actaully help the engine perform as a more aggressive race style cam would. in my opinion if you want a nasty lope then buy a cam that with give you the lope and the performance, not just a cam that will give you lope and mild performance. that is what i ment about "all talk and no action"
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