LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Port Heads or not?

Old May 14, 2009 | 04:06 PM
  #21  
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Originally Posted by pillarpod
I'm getting a CC503 with the rockers this summer.....i was wondering if i should get the heads ported or not and when the cam is installed i'm getting a tune at South Side Performance
Simply comes down to money, it always does. If you have the money, go for it. To optimize your set up, you will want a higher stall and gears. So like I said, it only comes down to $$$.
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Old May 15, 2009 | 08:29 AM
  #22  
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The very first item of attention you should concentrate on is suspension, No amount of horsepower is going to get you anywhere if you cant put it to the ground. A customer of mine had a "BONE STOCK" LT1 A4, He did have a trans brake, complete suspension and with a street tune ran 13.0 flat. He threw in a 100 shot and ran 12.02. He grew out of it and now runs 9.90's with a 1.3 Sixty foot....
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Old May 15, 2009 | 08:42 AM
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Originally Posted by pillarpod
I bought this car when i was in the 10th grade. Slowly but its becoming a demon from hell. what i have done to it now. CAI, MAFS, PS mid legnth headers, Header muffler, 3'' catback, 52mm tb, Hypertech Programmer, 2300 stall, trans go shift kit, and a corvette servo. My plan is get a CC503 (springs 1.6 rockers ect.) I was wondering if i should port my heads? I've look at new after market heads but they cost to much for me. So is it worth to get my heads ported or should i not touch them at all?

You need to settle down and do more research before buying parts.
Aftermarket MAFs are generally a BAD thing.
Hypertech is a bad thing.
2300 stall is not really a great idea, money would have been better spent on a 2800+ 9.5" unit.
Corvette servo was STOCK on all LT1 cars even Grandma's Roadmaster, so if you paid for that you got screwed.
For 52mm TB I will ONLY recommend rebored stockers since ALL the aftermarket TBs have some issues associated with them and cost more. For 52 or even 54mm a stock TB can be reworked cheaper and wont have the IAC, binding or TPS issues. Once you look at 58mm then you have no choice but to deal with the aftermarket issues.

Not trying to discourage you. I was young once too and made a hell of a lot of mistakes, I wish I had had someone knowledgable to help me avoid some of them.

Thr 503 is a nice cam with complimenting springs and rocker, it will REALLY shine if it has NICE heads to use. Ported heads though can do anything from hurt power to gain even more than the 40hp one poster suggested. Hell I know a guy that swapped from GOOD ported heads he did himself to a set of the same castings done by professional and gained 50rwhp. He basically went from good heads to great heads.

Problem is there are more guys out there doing mediocre work than good or great and there are some doing poor work.

In my old age I have come to realize popularity guarantees nothing but good salesmanship and a cheap price. Popularity is what puts our elected officials in office, do you really think those are good choices??? Same thing applies here.
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Old May 15, 2009 | 09:12 AM
  #24  
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I read that only the impala SS (96' and 97') just came with the corvette servo
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Old May 15, 2009 | 09:19 AM
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You read wrong. Besides the servo thing there was no 97 b-body atall.

A lot of the guys with Impalas and f-bodies want to come up with ways to PRETEND the Caprice, Roadmaster, Fleetwood are somehow "lesser" the comments you read came from tha mentality.

Is a constant thorn in the Impala guys sides that the Impala is NOT it's own model, the VIN is a Caprice, the WX3 option code was what made an "Impala". Insurance and titles usually state "Caprice" or "Caprice/Impala", has upset a LOT of Impala owners over the years.
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Old May 15, 2009 | 09:37 AM
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whats wrong with MAFS
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Old May 15, 2009 | 09:47 AM
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aftermarket MAF's have been proven not to be very good. most people ditch them and go back with the stock one
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Old May 15, 2009 | 09:56 AM
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the MAFS was the only thing that was not stock when i bought the car and i haven't had any problems with it
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Old May 15, 2009 | 10:13 AM
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you may never have any problems with it, just there has been a lot of guys that have. not bashing them cause ive never tried one myself. just a lot of research
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Old May 15, 2009 | 10:32 AM
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Once you put forth the effort to UNDERSTAND how things work you will know why aftermarket MAFs are frequently bad.

They try and trick the pcm into leaning out WOT a bit because factory tuning is excessively rich. Once the pcm is programmed right they cause at best no gain and at worst problems.

Ed Wright tested the stock MAF on his over 500rwhp car and so single digit gains in deleteing it with perfect tuning before and after. Meaning your car making200+hp less does not need a larger MAF.
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Old May 15, 2009 | 05:32 PM
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+1 for stock MAF. The mafs that are advertised at 15-20hp gains only get you that if your upgrades are beyond what your stocker can handle. And like what was said i think i've heard its somewhere round 4-5 hundred horsepower due to head work before you need to replace. And when you realize your looking at 250 for something you dont actually need, it lets you get something you do.
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Old May 17, 2009 | 10:31 PM
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Went to the track to get times for the first time today. 13.86 at 98.62mph
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