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Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

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Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

Old 01-28-2019, 12:15 PM
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Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

https://www.jegs.com/i/Comp-Cams/249/08-501-8/10002/-1?CAWELAID=1710826936&CAGPSPN=pla&CAAGID=64910942544&CATCI=pla-489859622286&CATARGETID=230006180040661061&cadevice=c&gclid=Cj0KCQjwrszdBRDWARIsAEEYhrcPDNseDEx8VSd5jW-Io85QLj2utBgza27zZSQ8JzrXoUQq35vuUqkaAtQqEALw_wcB

This one was recommended in a previous thread as a good boost to a stock LB9 automatic (peanut cam).

So I just got the engine working great thanks to a lot of tuning effort from Scott Hansen. Everything is fresh and stock except for the Bosch D3 injectors. It runs like a new car now and is an absolute pleasure to drive.
If I just wanted to do one thing to give it a little more pep, the cam seems like a good choice.

I did the springs and seals last year and used these Edelbrock springs:

https://www.jegs.com/i/Edelbrock/350/5802/10002/-1

However, in reading many threads, some feel that the low end torque from the peanut cam combined with the automatic is already really fun (which it is). Add to that the TPI induction limitations and I'm beginning to think that the substantially bigger cam might cost me more low end torque than in additional upper power I can gain. I also should add I have 3:42's in the back and they add a lot of torque as well.

Just looking for some thoughts.

I'm not looking to do headers but MAYBE...MAYBE a higher flowing intake. The TPI induction and the cam seem to be the first two corks in getting some noticeable extra mid and top end power from the TPI LB9s. I know the exhaust manifolds are tight as well, but putting shorties on would be too big a job for this stock, higher-mileage engine. To me, cam and intake are easier, bolt on jobs with no long term maintenance impacts.

I want to make sure that I retain the stock driveability and feel of the original powertrain while adding a nice "optimization".

Last edited by Tootie Pang; 01-28-2019 at 12:29 PM.
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Old 01-28-2019, 12:42 PM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

I have not, only run bigger cam in a stock L98 and didnt seem to be huge gains on that setup

but there is a big difference in ratings for the L98 cammed 305 tpi cars vs the peanut cammed stuff. I cant see a slightly bigger cam hurting anything in your case
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Old 01-28-2019, 03:44 PM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

GM 94666492

Same cam as a Crane 2032 with a much cheaper price tag.
270/276 @ 0.004
214/220 @ .050
.452/.465" LIFT
112 LSA, 108 ICL
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Old 01-28-2019, 05:24 PM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

That is a lot less. $119.

Holy cow, $94.

Third edit. $87. Holy cow. I can't pass that up.

Last edited by Tootie Pang; 01-28-2019 at 05:37 PM.
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Old 01-28-2019, 06:54 PM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

I'm currently running a 218/218 @ .050 and it is a fair bit of cam for the little 305, in saying that I absolutely love it and the difference is night and day. That sized cam is about as large as you can go with the stock converter. Stick a 2000-2200 converter in there and it should wake up even more.

Not 100% sure how much your computer will enjoy the cam though.
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Old 01-28-2019, 07:00 PM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

Originally Posted by zed-028 View Post
I'm currently running a 218/218 @ .050 and it is a fair bit of cam for the little 305, in saying that I absolutely love it and the difference is night and day. That sized cam is about as large as you can go with the stock converter. Stick a 2000-2200 converter in there and it should wake up even more.

Not 100% sure how much your computer will enjoy the cam though.
Before I smoked the 4L60E in my 99 Tahoe and swapped in an 8.1/4L80E, I had a Vortec 305 with a 218/218 @ .050 cam and 1.6 roller rockers in it. Used the 4.3 S10 converter that stalled about 2,500 rpm behind the cammed 305. Ran strong for a heavy Tahoe.

MAF TPI should run pretty good with that cam.

Last edited by Fast355; 01-28-2019 at 07:19 PM.
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Old 01-28-2019, 09:26 PM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

Originally Posted by Fast355 View Post
Before I smoked the 4L60E in my 99 Tahoe and swapped in an 8.1/4L80E, I had a Vortec 305 with a 218/218 @ .050 cam and 1.6 roller rockers in it. Used the 4.3 S10 converter that stalled about 2,500 rpm behind the cammed 305. Ran strong for a heavy Tahoe.

MAF TPI should run pretty good with that cam.
Hows that 8.1 treating you?
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Old 01-28-2019, 09:29 PM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

Originally Posted by RS Chris View Post
Hows that 8.1 treating you?
It has a mercruiser mag 496 HO cam in it. Runs very well. Moves that Tahoe around like it weighs half as much as it does.
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Old 01-29-2019, 07:15 AM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

Originally Posted by Tootie Pang View Post
However, in reading many threads, some feel that the low end torque from the peanut cam combined with the automatic is already really fun (which it is) ".
Agreed.
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Old 01-29-2019, 09:12 AM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

Friend of mine is running a 268 cam in an 87 T/A 5.0 TPI. Way more power and I'm sure tuning would help it even more as he is running stock injectors, chip, everything. Thing has always run real close with 350 cars
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Old 01-29-2019, 09:16 AM
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Re: Anyone used a Comp Cams XR264HR in a stock TPI LB9 auto (peanut cam)?

Originally Posted by Fast355 View Post
GM 94666492

Same cam as a Crane 2032 with a much cheaper price tag.
270/276 @ 0.004
214/220 @ .050
.452/.465" LIFT
112 LSA, 108 ICL
Dang! I gota check on this today, thanks Fast355
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