Head and Cam Swap, 82 CFI


Thanks Phil for the mention. The port matching procedure can be found here:

Port Matching Procedure (Step-by-Step Guide with Pictures)
viewtopic.php?f=55&t=5378

I have the Brodix IK200, that's what you see in the link above. They are the only aluminum heads I've ever owned, so I can't speak from experience. Please understand that I'm a fanatic about sharp edges, so I went further than most spending time on the heads. Just removing sharp edges everywhere, such as spring pockets, valve cover rails, water passages.....etc., is not necessarily going to improve performance.

If you go to my build thread you will see the work that I put into matching the combustion chamber sizes. Busterrm on here bought the Dart SHP heads and didn't have to do anything to the chambers, they were very close direct from Dart.

TBucket Engine Project (Dart SHP)
viewtopic.php?f=69&t=3814&start=64 [ Page 5-13 ]


Busterrm thread and Dart SHP heads.

Planning a new 383 build that is now going to be a 400 [ Page 21 & 22 ]
viewtopic.php?f=69&t=7804


 
87vette81big said:
Big Tube Headers are made for LS Engines Phil .
If I had the money...would go LS TURBO ALSO.
Click to expand...

you can get a set of kooks headers with 2 inch primaries and 3.5 inch collector right off the shelf for less than a thousand bucks. them motors breathe!
 
philly said:
87vette81big said:
Big Tube Headers are made for LS Engines Phil .
If I had the money...would go LS TURBO ALSO.[/quot
you can get a set of kooks headers with 2 inch primaries and 3.5 inch collector right off the shelf for less than a thousand bucks. them motors breathe!
Click to expand...
Click to expand...
I know Phil.
Find them for a C4 Vette with same Specs for a Gen 1 SBC.
NOTTA.......
 
87vette81big said:
philly said:
87vette81big said:
Big Tube Headers are made for LS Engines Phil .
If I had the money...would go LS TURBO ALSO.[/quot
you can get a set of kooks headers with 2 inch primaries and 3.5 inch collector right off the shelf for less than a thousand bucks. them motors breathe!
Click to expand...
Click to expand...
I know Phil.
Find them for a C4 Vette with same Specs for a Gen 1 SBC.
NOTTA.......
Click to expand...


unfortunately... but thats a symptom of the kind of people who have owned corvettes for the past 20-30 years. theres no aftermarket performance for them because mostly the people that owned one were being a vagina.
 
Grumpy is the only Hardcore from original group Phil.
Get into archives....Find Grumpy all over on CFC4.
He was a mystery to me for 4 years till I got on Digital Corvette Forum.
 
i think the first bite of knowledge i got from grumpy was on fuelslut in the dot com days of 2002 or thereabouts. seen him on hybridZ the z performance forum too, thats where i found a link to this place... now i rarely post on other forums anymore.
 
Its A Miracle.

YOUR RENEGADE IS WITH YOU.

Don't ever sell it. Likely never have another ever again.
 
:mrgreen:

I'll keep it. Took a lot of waiting for the right moment to order to get it! I think the place I got it from has two more.
 
as with all new intakes ,closely inspect it for loose machining chips or casting flaws, and use a MATCHING SIZE intake gasket to judge both its port location and size in relation to your matching cylinder heads, port matching may be an option if theres a noticeable difference, don,t be afraid to get it cleaned up and carefully matched ,but obviously don,t go crazy removing metal,it should be close to the way it needs to be right out of the packaging
WATCH VIDEO
https://www.youtube.com/watch?annotatio ... v3ZkqZiMjI

lets do a bit of math
just a bit of info on intake gaskets sizes to match port cross sectional areas
volumetric.gif

116_0403_basic_10_z.jpg

a significant improvement in cylinder fill efficiency can be had by allowing the exhaust scavenging to draw the following intake runner charge of fuel/air into the cylinder and flush out the proceeding, charges burnt gases, but it requires matched cam timing and a low restriction exhaust , properly matched headers to function.
exhaustpressure.jpg

EXFLOWZ4.jpg




USE THE CALCULATORS below to find the approximate intended power band the port cross sectional area will allow, that way you won,t be tempted to think its some other factor when you find the combos power curve limitations, but remember properly matched exhaust scavenging and cam timing potentially extends and broadens that potential power curve
http://www.rbracing-rsr.com/runnertorquecalc.html
http://www.wallaceracing.com/chokepoint.php
http://www.wallaceracing.com/header_length.php


COMMON SBC INTAKE PORTS
felpro # 1204=Port Size: 1.23" x 1.99"=2.448 sq inches

felpro # 1205=Port Size: 1.28" x 2.09"=2.67 sq inches

felpro # 1206=Port Size: 1.34" x 2.21"=2.96 sq inches

felpro # 1207=Port Size: 1.38" x 2.28"=3.146 sq inches

felpro # 1209=Port Size: 1.38" x 2.38"=3.28 sq inches

felpro # 1255 VORTEC=Port Size: 1.08" x 2.16"-2.33 sq inches

felpro # 1263=Port Size: 1.31" x 2.02"=2.65 sq inches

felpro # 1266=Port Size: 1.34" x 2.21"=2.96 sq inches

felpro # 1284 LT1=Port Size: 1.25 x 2.04''=2.55 sq inches

felpro # 1289 FASTBURN=Port Size: 1.30" x 2.31" 3.00 sq inches
Felpro-Gasket-Port-Sizes.jpg
 
I test fitted the Fel Pro 1205 gaskets to the Renegade manifold and they are very close. I ordered the Dart Heads today (they also call for the 1205) and will see how they match up when they arrive. I'm getting closer to getting this done!
 
The heads have arrived. We should be pulling the engine next week if all goes as planned. I'm wondering if 13 psi will be enough fuel pressure, those ports are large!



 
The next step is pulling the engine. That should be happening this coming week I hope. My helper is finishing up some things on his end then he's bringing over his hoist. Then teardown (with pics) and the block and crank will head off to the machine shop. I can't wait to get started!
 
The engine is stripped of all accessories, grounds, wires, sensors, etc and is ready to come out of the car. I'm just waiting on the cherry picker to arrive. We should get the motor out this weekend and start the tear down and get it to the machine shop. While its out of the car I'll be detailing the engine compartment and taming the nest of wires, looming, re-routing and replacing as needed so when the engine goes back in it will be a really clean install. It looks like I have a replacement 700r4 in there, with a red torque converter, the case is a lot cleaner than I would expect from an 82 700r4, so it must have been replaced before I bought the car. I know the 1-2 shift has always been really firm, I wonder what's in there.
 
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