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Vortec Head Swap On TBI Truck, What Cam?

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Old Dec 12, 2002 | 12:20 AM
  #1  
zcarczar's Avatar
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From: Apple Valley, California
Vortec Head Swap On TBI Truck, What Cam?

Ive been researching TBI performance and have decided to go through with the Vortec head swap. But I am still clueless on what kind of cam to run. I sent Comp Cams the cam form they have on their site and they recommended me this cam, http://store.summitracing.com/partdetail.asp?part=26525 I was leaning towards the LT1 cam. What cam would you guys recommend? Im looking for more low end power and wouldn't mind gaining a little more upper end power.

I was also planning on retrofitting my truck with the stock roller cam out of a L31 truck engine. Will this work if I drill and tap the whole in the middle of the block for the spider hold down?

BTW, my truck is a 1989 K5 Blazer. It has a Holley TBI, Lifted with 35's and 4.10's.
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Old Dec 12, 2002 | 12:55 AM
  #2  
JPrevost's Avatar
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
Re: Vortec Head Swap On TBI Truck, What Cam?

Originally posted by zcarczar
Ive been researching TBI performance and have decided to go through with the Vortec head swap. But I am still clueless on what kind of cam to run. I sent Comp Cams the cam form they have on their site and they recommended me this cam, http://store.summitracing.com/partdetail.asp?part=26525 I was leaning towards the LT1 cam. What cam would you guys recommend? Im looking for more low end power and wouldn't mind gaining a little more upper end power.

I was also planning on retrofitting my truck with the stock roller cam out of a L31 truck engine. Will this work if I drill and tap the whole in the middle of the block for the spider hold down?

BTW, my truck is a 1989 K5 Blazer. It has a Holley TBI, Lifted with 35's and 4.10's.
LT1 cam is a good choice and depending on the year the block should already be tapped for a roller cam system. Might want to look into burning your own eproms to get the best low end power and milage.
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