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I have a 5.3 that i am putting in a 72 chevy 4x4, i have 1 7/8 doug thorley headers and im looking to put a cam in the motor. I am looking at a comp mutha thumpr cam and im wondering if it would be a decent candidate. also do u need to change injectors with this cam? i have a 4l65e with some light mods and also have located a 2600 stall from a buddy. any input would be greatly appriciated. thanks
What are your plans for the truck????
I take it to local cruise ins, mainly a weekend cruiser. Ive had it for 10 years and have finally got my motor trans and everything lined up and ready to go and i want something thats reliable, sounds good and brings a little more power than just a stock 5.3. Im not looking to do any forced induction, so i figured a somewhat larger cam would be ok. Any suggestions would be greatly appriciated. the truck is on 36's and ill be running 4.56 gears.
Thumpr is great on sound and not so great on power. It requires a lot of stall to be useful. I would suggest something different.
My guildlines for stalls and cams go something like this:
No Stall=212/218
3k Stall=224ish/228ish
3600+stall=23x/23x
With those gears and tires I would go 216/220 with the 2600 stall your friend has personally.
what make and name of cam do u recommend? also valvesprings and pushrods nessisary?
Yes and yes if you have less than .550 lift you can run LS6 springs. Larger than that you will need a better spring (double springs are good insurance). Hardened push rods for sure. If you go on the thunder racing site, or texas speed site they have straight forward cam kits that are pretty simple. Cam brand isn't very important.
ls6 springs are good to .570 according to the dealerships... as far as stated chase is the man and x2 on what he said :)Quote:
Originally Posted by kerrige
i really liked my zo6 cam it sounded good and made a big difference in torque and horsepower it was untuned stock injectors it was a 2003 model cam low miles with pushrods lifters and cam
if i were to go with one of these aftermarket cams instead of a gm cam, would i need to change injectors, and with the z06 cam would it be benificial to get it tuned or not. $450 for a tune is high if it doesnt make a difference in the performance. I would definitely be interested in a z06 cam, if it makes decent power and sounds good.
IMO the ls6 cam isn't nearly as good as a 212/218 cam and will likely cost you almost as much when u incorporate all the odds and ends. A ls6/zo6 cam is good for about 30-40HP where as a larger after market will net much more maybe 75ish.
Nelson performance will do a great custom tune for 300$ which includes free retunes for life. IMO the best mod for the money hands down.
You most likely wont need injectors. I would say that with 97% assurance.
That sounds good, ill check out the sites and see about 212/218. Ive read on this forum about nelson tuning, not really familiar with it though. Im in Ga, and didnt know where there located at. Would i need to take the truck to them or just send off the computer? Most shops around here have lots of buisness, but there charging like $450 plus for a tune! $300 is a heck of a deal from my standpoint and the free retunes for later mods or whatever sounds awesome.
i got on the texas speed, and thunder racing site found 63-ls-212/218 cam seemed to be a good candidate, couldnt seem to find the lift specs on the site or anything, and also it just said works well with crane rockers. nothing about spring recommendations, and i couldnt find a cam kit that cam with everything in one bundle.
http://www.texas-speed.com/p-1157-te...ve-spring.aspx
I would suggest getting just a 212/218 low lift cam, LS6 springs, and pushrods separately if you are going that route as you can find the springs for 70$ and rods for 110 there by getting you in under 500$.
With NP you just order the tune with all your specs. They send a freshly tuned PCM to you and you mail your old one back. No down time and very simple as you only pay shipping on the PCM for retunes.
Sounds good to me. with this set up would the 2600 stall be too much? If so its no big deal bc as of right now i havent bought it yet a friend bought it for his truck and never used it, so i was going to get it at a good deal.
That would most likely be a great stall for that cam although if you are getting a 2600 stall. Although personally if it is in your budget I would get a bigger cam to match that stall. A jump to say a tr224 or something like that wouldn't be out of the question with a decent stall like the one you are talking about getting anyways. Just my opinion. To keep it on a budget stick with the 212/218 and ls6 springs. On a bigger budget with a stall go bigger on the cam.
Jared, you're on the best forum around! Im glad guys like Kerrige are around. Cam profiles are like black magic to me. Since you're gonna mod it, make it worth it! Go 224 and buy my converter. Nothing like having the grunt to go with all the sound! If you buy it, ill wire your new powertrain for free :). Lol
Thanks man I wish I had half the mechanical ability you have with some of those sick swaps you have done.Quote:
Originally Posted by vortecyota
2600 is too small for the 224.
A 2600 converter isn't worth its weight in piss in my opinion. 3200 or bust.
i appriciate all the input. And ill more than likely take you up on that offer Brint! lol there is a large range from 2600 to 3200 what gives? just preference?
Ls engines love to rev. The 224 is going to be a dog down low with a 2600. It needs more stall to get it up in the powerband.Quote:
Originally Posted by jarede1972
Ok so im pretty sure im going to order the tr224 (224 224 112) im going with comp springs and pushrods. what about the lifters? will the sockers be ok or do i need to upgrade them as well?
thats a good cam to go with! friend of mine just installed it into his ecrb. he went with z06 springs and comp pushrods. lifters are stock. dont think you need to change those.Quote:
Originally Posted by jarede1972