Head and Cam Swap, 82 CFI

Brian I'm glad you told me about this site. I've learned more about engines and what works best since I joined up here. Thanks everyone for all the help! I'll be gathering up parts soon, I hope to start the rebuild in July. You guys are awesome! Thanks again!
 
Eddie Motorsports has the Renegade in stock. I have ordered it and will report back with my impressions of it out of the box. I hope it lives up to the expectation.
 
the renegade intake will help, increase your combos flow and resulting power potential, but without decent cylinder heads and a cam too complete the combo needed, to provide a low restriction air flow route into the cylinders ,the air flow , increase potential of just the intake alone won,t do much to give you near its full potential flow.
have you decided on the other components?

that lunati cams fine, for that application,
http://www.lunatipower.com/CamSpecCard. ... mber=60101

but have you firmly decided on which cylinder heads?

you mentioned these darts
http://www.summitracing.com/parts/drt-127411/overview/


the brodix 200IK work well
http://www.jegs.com/i/Brodix/158/1021004/10002/-1

and certainly a set of 1.6:1 ratio roller rockers would be very useful in reducing friction and increasing effective lift, and of course swapping to 3.45:1 or 3.73:1 rear gears and to a better fuel pump and headers sure won,t hurt results...yeah! a never ending bottomless hole to throw cash into, but hey! it can markedly improve the cars performance
 
I've pretty much settled on the Dart 127422 200cc heads after reading everything you told me in your previous post. That will give me room to upgrade later if I decide to. The Renegade is just the first part ordered, I wanted to get that while it was in stock. I'm still putting my parts list together, 1.6 rockers, a few tools I need (pushrod length checker, cam degree wheel, etc), all the needed gaskets and accessories. I hope to start with teardown and rebuild in July, I should have all my parts in by then. I installed an 85 Vette TPI pump a couple of years ago, I'm getting a solid 13 PSI at the TBs. I'm also looking at going with 3:55 rear gears, but that will be for another day, gonna eat this elephant one bite at a time. The parts list grows daily, and I have to allow for possible needed machine work on the block and everything associated with that as well. I could end up having to get pistons, bore the block, etc. I looked at the Brodix Heads as well, but I think I'll stay with the Darts, they will do what I need. I checked DCR with an online calculator, it came out at 7.88 so I think I'm good as far as DCR and SCR. I'm looking forward to getting this build started and completed, and I'm sure I'll be back with questions here and there. Thanks again for all the help and advice.
 
One more question, will the heads need to be machined for the 1.6 rockers to keep the pushrods from binding, or are they good out of the box with the guideplates?
 
I use mostly these brodix 200ik heads on 383 builds, lately, as the cost is reasonable for the performance you get
brodix
http://www.jegs.com/i/Brodix/158/102100 ... tId=760699

heres the two decent choices from AFR
for street use
http://www.summitracing.com/parts/afr-1034

if you want to race
http://www.summitracing.com/parts/afr-1054


If you intend to build a SBC with a corvette cross fire engine as a starting point,
we certainly have a good deal of related info you can use.

THERES MORE BUT ID START WITH THESE THREADS
carefully reading the threads and links will be very helpful.
as youll see the web site is set up to teach and answer questions and if you have anything , youve learned that might help other members ,please post the tips, pictures and info.

http://garage.grumpysperformance.co...egade-intake-for-cross-fires.2796/#post-54235

http://garage.grumpysperformance.com/index.php?threads/got-a-cross-fire-corvette.640/#post-5467

http://garage.grumpysperformance.co...-fire-intake-porting-or-upgrade.102/#post-126

http://garage.grumpysperformance.com/index.php?threads/head-and-cam-swap-82-cfi.10412/#post-43216

http://garage.grumpysperformance.com/index.php?threads/crossfire-sleeper.12732/page-2#post-69838

theres a great deal that can be done, but I'm forced to point out that the Stock cylinder heads and intake are killing the engines potential, and obviously both your budget and skills might limit or increase your options, upgrading the intake and heads and cam will be key to good results, obviously a low restriction exhaust and headers and possibly a increase in compression and displacement sure helps
 
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In looking at the pictures of the Brodix heads, they don't appear to have the ports for the Temp senders. Would I have to have those drilled and tapped?
 
no! just use the ports in the intake manifold to screw in the temp sensors
edl-7561tem.jpg

check your water pump, many models have extra threaded and plugged ports, some t-stat housing do also

http://www.ebay.com/itm/SB-BB-CHEVY-CHR ... 4897.l5663

tempneck.png
 
There are no ports in the Renegade Manifold for the two temp senders, so I would have to have the ports milled and tapped. I will check to see who around here does that kind of work.
 
I remember from old Corvette Forum Guys waiting 3 years to get thier Renegade Intake.
About 20 Vette guys paid in full in Advance. Waited patiently .
My last year they went Bazeerk.
A thread about 20 pages long happened in 2 weeks.
All because some guy supposedly ran in 11's with a Renegade untake.
I hope you get your Renegade soon.
Unlike others.
 
87vette81big said:
I remember from old Corvette Forum Guys waiting 3 years to get thier Renegade Intake.
About 20 Vette guys paid in full in Advance. Waited patiently .
My last year they went Bazeerk.
A thread about 20 pages long happened in 2 weeks.
All because some guy supposedly ran in 11's with a Renegade untake.
I hope you get your Renegade soon.
Unlike others.
Click to expand...

Yeah I read that thread, Brian. I have a UPS shipping number, the intake will be here Friday, I'll take pictures and post them for proof that the elusive manifold actually exists, lol.

Grumpy, I have the one port in the top of the water pump. I'm thinking the Darts will do the trick for me. Cost is the same and the ports are there where I need them to be without having to have any machine work done to brand new heads. Is there something about the Dart heads that puts you off?
 
Thanks, I just ordered the rest of the parts except the heads, still mulling over which ones (Dart, Brodix) to get, still leaning towards the Dart heads for now, if anyone has any experience with them that would be good to know if you want to share the info.

All this started back when I started having ping issues. Brian helped out a lot with that over on Digital Corvettes in the C3 forum. I started saving up then to do this upgrade/rebuild. I know I've said it before, but thanks to everyone for all the help, advice and input.
 
whichever heads you decide on are going to still need some work for optimal results, a port match job will do wonders for your velocity and fuel mixture... rick posted a very informative thread on the subject with great pictures... also worth removing any cylinder head casting defects and then refinishing with a 60 grit roll or stone or both. if youre feeling froggy while youre in there, removing material around the valve guide boss to the point that theres only about 1/4" of material left is worth some flow.

also if you want to pick up some cool points and dont want to rely on thermal coatings, taking the time to polish your combustion chambers and exhaust ports reduces the available surface area of the metal and thereby doesnt transfer heat into your coolant as easily as a rough finish does. this helps with not only ping resistance but exhaust gas velocty as well

most people know this already but i have to add... do not polish your intake ports.. the fuel can come out of suspension of the air mixture and puddle in your intake. needless to say thats bad.
 
Cylinder head choice....
Nearly everyone with a Chevy overlooks Trickflow Heads.
Its a shame because they do perform awesome.
For Serious no. Holds Barred I would Choose Brodix For a SBC.
RACE GEARING. NO 2-3 SERIES REAR GEARS & WIMPY CAMS.

AFR OK. I THINK OVER RATED.
BECAUSE NO SERIOUS RACE HEADERS MADE FOR A C3 & C4 CORVETTE.
ALL ARE DINKY TUBES.
TINY COLLECTORS.
BIG IS 2"-2-1/8" -2-1/4"-2-1/2" Primary tubes.
3-1/2" -4"- 5" DIAMETER COLLECTORS.
Everyone that thought they built a 10- 9 second Vette with AFR 195 Found out its just a 12-11 Second Car still.
Dart has Good Heads.
Grumpy must feel there is better.
 
i have used the AFR heads in the past for sbf... talk about plug and play. i didnt have to do anything to those heads, just drop em on the motor and make power... trick flows on the other hand i have and have had friends who have to really spend what i feel is an excessive amount of time fixing casting errors... out of the box the afr is a higher quality fit and finish than the trick flow... however my buddy was making big power with his trick flow top end on his efi 306 (cranking compression was like 215 psi) until it went into a ditch/light pole so i guess they all have their ups and downs... nowadays i would never install anything right out of the box without a serious inspection
 
speaking of exhaust... vizard touched on it in one of his books that v8's arent very picky with primary length between 30-40" there isnt much change... its the collector length that makes all the difference (in his experience) which admittedly is far more than my experience.
 
philly said:
i have used the AFR heads in the past for sbf... talk about plug and play. i didnt have to do anything to those heads, just drop em on the motor and make power... trick flows on the other hand i have and have had friends who have to really spend what i feel is an excessive amount of time fixing casting errors... out of the box the afr is a higher quality fit and finish than the trick flow... however my buddy was making big power with his trick flow top end on his efi 306 (cranking compression was like 215 psi) until it went into a ditch/light pole so i guess they all have their ups and downs... nowadays i would never install anything right out of the box without a serious inspection
Click to expand...
TRICKFLOW R HEADS FOR A SBF PHIL.
R Stands For Race.
Your friend likely had the street head Trickflows.
R head SBC never made. No demand.
 
Trickfllow put 5.0 Mustang on the Race Track & wins nationwide.
Chevy guys hate them. Sbc & BBC killers.
Unless Stroker Race Engines built & blueprinted.
 
Big Tube Headers are made for LS Engines Phil .
If I had the money...would go LS TURBO ALSO.
 
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