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Old 02-08-2007, 10:57 AM
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will this cam work well?

i have a 69 suburban with a 350 from an 88 1500 truck, a th350 tranny, stock converter(dont know stall). holley street doninator intake, holley 600cfm vacumn secondary carb, short headers.

the cam i am thinking of using is the crane version of the chevy 327/350hp cam. crn-967601. 222* duration in/ex. .447" lift in/ex. and i think 114* lobe seperation.

the truck is just a driver. do you think this will give me good midrange. would 1.6 or 1.7 rockers help or hurt?

thanks

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Old 02-08-2007, 12:18 PM
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Welcome to the site

Hope you enjoy your time with us.
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Old 02-08-2007, 12:54 PM
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Originally Posted by xntrik
Welcome to the site

Hope you enjoy your time with us.
HUH? Allright, who are you and what have you done with xntrik?
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Old 02-08-2007, 07:18 PM
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well, thanks for the welcome. i've already enjoyed looking around and just reading posts and articles in the knowledge base.

so, any ideas on the cam? how do think it will do?
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Old 02-08-2007, 07:34 PM
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If you pull 10* off the duration, you can pull 4* off the LSA, and make better low-mid torque,

but some people will disagree and want to make it a 5200 pound race truck.

I'd go for a 208* or a 212* on 110* LSA.

The camyou suggest will put your power peaks up at 4000 and 5600.
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Old 02-08-2007, 07:42 PM
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Some people think that cam is all wrong for your truck.
High ratio rockers will not help. its an old 60's era corvette cam. Not a good cam for a truck at all.

You need a "TRUCK Cam"... Try something around 204 to 212@.050 depending on the rear gear ratio and tire diameter on your truck. Do you know the rear gear ratio?
A 88 350 should be a roller cam block. Does it have a roller cam in it now? Could be a flat tappet cam in a roller block as well. If you do have a roller block, Do you want a roller cam?
A Crane cam like #113901 would be a much much better choice.
You'd like it a lot lot better than the one you're looking at.
And 1.6 rockers will help this one. Usually only needed on the intake side. You can buy split sets of rocker arms with half 1.6 and half 1.5 ratio. or just run a full set of 1.6 rockers to good effect. Choice is yours.
This is a flat tappet hyd cam. It will work in a 88 block with conventional flat tappet lifters and longer flat tappet pushrods.
if you have a roller cam now you can reuse your roller lifters and buy a simular grind hyd roller cam to the one I suggest.
Reguardless, this is the size of cam you want for your truck.
It makes very good mid range power with more top end than the stock cam.
You need to first determine which type of cam in in the motor now. 1988 truck motors cam with both types of cams.

Here is another good cam for a truck. it likes a bit of rear gear 3.55 or 3.73 or higher and can benefit from a bit higher stall speed. (2200-2500 stall) its is Comp Cams 265DEH pn 12-208-2. Again 1.6 rockers are a nice upgrade if you want.
If you have low gears and a very low stall converter than the smaller Crane cam is the better choice. But if you have the rear gearing and converter stall or will be changing that, This Comp cam will run very nicely with the other motor parts you have. This is as big as I'd go. It's a nice cam.
What cylinder heads are on your motor? (casting number)

Last edited by F-BIRD'88; 02-08-2007 at 08:30 PM.
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Old 02-08-2007, 10:06 PM
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Here's a very good, proven cam for applications just like yours. I have used this cam in dozens of engines and have never had a complaint. It is marketed under many brand names.
Specs are 204 @ .050 in. and 214 @ .050 ex.
.420 lift in. and .443 lift ex. with 112 of lobe sep.
It has a great idle and makes lots of torque.

Good luck with your project and welcome.

Barry
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Old 02-08-2007, 10:57 PM
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Quote:
Originally Posted by topfuel
Here's a very good, proven cam for applications just like yours. I have used this cam in dozens of engines and have never had a complaint. It is marketed under many brand names.
Specs are 204 @ .050 in. and 214 @ .050 ex.
.420 lift in. and .443 lift ex. with 112 of lobe sep.
It has a great idle and makes lots of torque.

Good luck with your project and welcome.

Barry
You can buy this cam from Summit Racing part number is
SUM-1102 (cam only) or SUM-K1102 (cam and lifter kit)
hard to beat this one at $69. It is "just right"
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Old 02-09-2007, 08:48 AM
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I agree 100%! The 350hp/327 cam is not for your application.

Get the performer cam (not performer plus or performer rpm) or get the summit cam of similar duration.

Yes, 204/214 degrees duration is what you need for a multitude of reasons. (low compression, poor flowing exhaust port, stock valve springs, stock rockers, small engine in a heavy truck)
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Old 02-09-2007, 08:58 AM
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There has been an influx of poor quality off shore lifters that are blamed for cam failures. Consider what you might be buying at bargain basement prices.
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Old 02-09-2007, 10:01 AM
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Agree with everything said above....... I know of 2 people that have used the Summit 1102 in large vehicles with high gears and relatively small displacement and it worked great.
One was a '63 Bel Air with a boneyard 305, 200-4R and 3.08's. It was no tire shredder but it could haul 4 adults no problem and got an easy 20 MPG doing it.

Quote:
Originally Posted by xntrik
There has been an influx of poor quality off shore lifters that are blamed for cam failures. Consider what you might be buying at bargain basement prices.
Just FTR, they had no problems with the Summit lifters but yes, there is some crap out there so do be careful.
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Old 03-29-2009, 08:39 PM
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Quote:
Originally Posted by STLrocker
i have a 69 suburban with a 350 from an 88 1500 truck, a th350 tranny, stock converter(dont know stall). holley street doninator intake, holley 600cfm vacumn secondary carb, short headers.

the cam i am thinking of using is the crane version of the chevy 327/350hp cam. crn-967601. 222* duration in/ex. .447" lift in/ex. and i think 114* lobe seperation.

the truck is just a driver. do you think this will give me good midrange. would 1.6 or 1.7 rockers help or hurt?

thanks
1.6 rockers rv cams are rell good for suburban and trucks good midrange
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