Mixing old school and new technology

Old 10-12-2010, 04:10 PM
  #1  
ogles824
Member
MASTER JOURNEYMAN
Thread Starter
 
Join Date: Aug 2007
Posts: 45
Default Mixing old school and new technology

My son and I have a 1988 K5 Blazer 4x4 that has been full restored. We bought it off of EBay a while back and did a little work to it and started showing at the local car shows. We've come home with a couple of first place trophies. My son drives it to high school and has been driving it regularly since August. Since he started driving it, it has developed a small rear main seal leak. I want to fix that leak and was thinking of pulling the engine to do it. While we had it out I was thinking of doing some mods but I wondering just how far I should go (Not to worry, even though the motor is correct, it is not numbers matching) The motor is a 350 with TBI fuel injection which according to the tags under the hood, is the correct set up for this Blazer. I was thinking that while I had it our I would do a chrome dress up package, but me being a hot rodder I can't stop there. I'm thinking of a new cam and valve train, something in the High Energy line up from Comp Cams, prolly a 268. I also want to install a set of the Magnum roller rocker arms - 1:6 ratio, a duel roller timing set dialed up 4 degrees for more bottom end, and if I can find one that will except all the emissions stuff, an after market aluminum intake; oh yes, and set of long tube headers that will except the AIR emissions tubes. It all ready has duel exhaust with cats, aluminized pipe, stainless steel glass pack mufflers, and a cross over tube. Sounds kind of wimpy, not very loud the cats need to go but then you get into emissions laws. From what I saw on the WWW this motor in it present form is only making around 220 horsepower, that's kind of weak by today's standards, got to have more. Here's the biggy, the rub........ If I can pull off all of these mods, can I get the computer that controls it all to like them too?????
ogles824 is offline  
Old 10-12-2010, 08:26 PM
  #2  
kwkracing
Senior Member
RACING JUNKIE
 
Join Date: Dec 2004
Location: austin texas
Posts: 729
Default

A comp 268 is not a computer designed cam. The tbi set up works flawless stock but altered is a pain in the rear. A stock vortec roller cam is about the best you can swap.
kwkracing is offline  
Old 10-13-2010, 06:07 PM
  #3  
ogles824
Member
MASTER JOURNEYMAN
Thread Starter
 
Join Date: Aug 2007
Posts: 45
Default

Originally Posted by kwkracing
A comp 268 is not a computer designed cam. The tbi set up works flawless stock but altered is a pain in the rear. A stock vortec roller cam is about the best you can swap.
kw, what if I go with an after market TBI fuel injection system??? Can I install a hydraulic roller cam in this block with out having to do any machining or mods to the block?
ogles824 is offline  
Old 10-13-2010, 08:05 PM
  #4  
kwkracing
Senior Member
RACING JUNKIE
 
Join Date: Dec 2004
Location: austin texas
Posts: 729
Default

If its a roller capable block. Look and see in the lifter valley if there are bosses to hold a roller lifter spider or does the block have a cam retaining plate boss. Hopefully you have a 638 casting and it will be roller capable. Aftermarket tbi are not worth the money. There is no easy way to effiecently tune a obd1 computer. You would be better off going to a multi port, carb or leave it stock. I have wasted lots of money with name brand companys and achevied no more than before.

Call turbo city and discuss what you want to do. They are nice guys and if you are stuck on tbi, they can help you.
kwkracing is offline  
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -