thumpr cams
Sep 17, 2009 | 11:14 AM
#11
sorry to dig a little, but what is everyones opinion on the thumpr cam with ls6 yellow springs on a 5.3 with a TB stall, 4.56's and 33's? already got bolt ons (minus headers) and a blackbear tune. im mainly tryin to gain a good choopy idle sound, not lose any down low, but gain throughout the rpm range.
-alex
-alex
Sep 17, 2009 | 05:42 PM
#12
There are definitely better cams you could choose, but I'm sure it would do pretty good. If you are getting it cheap or used than sure, but I wouldn't pay full price for one. Do you already have the TB stall? If not, maybe consider a bigger one. Don't forget to keep an eye on the classified sections. Just about any cam with less than 220 duration would be good for you.
Sep 17, 2009 | 05:47 PM
#13
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James, I don't mean to steal your thunder...i'm still looking forward to a vid from yours! here is a sound clip of the thumpr cam in a 6L engine built by James(67SS509) for the rest of you fellas!
James, I don't mean to steal your thunder...i'm still looking forward to a vid from yours! here is a sound clip of the thumpr cam in a 6L engine built by James(67SS509) for the rest of you fellas!
Current motor in truck is a bone stock LS2 short block, thumper cam, bone stock 317 heads with 918 springs and milled .030" to get compression up to approx. 10.8 to 1. It has the new Eldebrock ProFlo intake and 1-7/8" long tubes. 42lb. injectors, Yank PT3600 and tuning is with EFIlive by me.
In the vid with the Lightning I throttled back before the 1000ft. when I realized he was no way going to run me down. It went 11.69 but I slowed it down to 106 mph. He went 119.
My truck is capable of mid to high 11's n/a and should break high 10's on a 125 shot.
I can do 1.7x 60' on the street tires and 1.4x on drag radials and transbrake.
By the way, the vette said he dynoed 492rwhp at Lingerfelter's. I feel my motor is making more than 500hp at the crank, maybe 4xxrwhp.
Now all this is
In the vid with the Lightning I throttled back before the 1000ft. when I realized he was no way going to run me down. It went 11.69 but I slowed it down to 106 mph. He went 119.
My truck is capable of mid to high 11's n/a and should break high 10's on a 125 shot.
I can do 1.7x 60' on the street tires and 1.4x on drag radials and transbrake.
By the way, the vette said he dynoed 492rwhp at Lingerfelter's. I feel my motor is making more than 500hp at the crank, maybe 4xxrwhp.
Now all this is
mid 11s with this cam in a basically stock LS2 isnt to shabby
Sep 17, 2009 | 05:52 PM
#14
The Thumpr cams are geared towards hot rods and street rods with LS engine swaps, they make more noise than power. There are much better cams out there that will suit your needs 
But I'm sure that they sound mean as hell!
But I'm sure that they sound mean as hell!
Last edited by budhayes3; Sep 17, 2009 at 06:02 PM.
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