Hello all, I am wanting to remove the crossfire set up and go carburated. I am looking for a good strong street/strip package. Anyone on here done this? If so what intake, carve, headers and cam do you recommend? Any info will be great.

 

My phones spell check is quite annoying.

 

As far as I am concerned spelling don't count. As for your xfire, you can pep it up a bit. There is a good active thread goeing on. On the other hand I see your point. I plan on a carb swap too.
The long block is a plain ol smoger SBC. If the short block is in good shape it sould be fine to 6000rpm. The heads cam and intake suck (throttle bodies flow suprisingly well). The dizzy is computer controlled and the computer is hard to tune. So... I dont see much improvement over stock if any of the cam and top end are retained. I think 360-375fwhp should be pretty easy, here's my plan....
Holley 650 HP. no choke housing should work well with a tight air cleaner lid. Note; there is only about 9"of room between the intake seal rails and the hood.
Mallory 4309 return fuel press regulator
Weiand Stealth classic. I got 1 kicking around, will fit under the hood and should flow better than a Eddy performer and have more power in the 3500-6000 than a Vic Jr or a Team G. If you dont mind cutting a hole in your hood use a Performer RPM or a Stealth.
Eddy 6089. Got a pair of thoes collecting dust too. 185cc intakes w/ 64cc chambers. Aluminum= 60#off the nose and 60 more cfm than the 624 on the xfire.
Cam 226/232 @.05 with a 108 lc .5 lift should hit real nice coming of a couner at 4000rpm pull to 5800 and have a good 14" vac
Davis DUI or MSD HEI (Davis has great service)
Hooker 2151 w/ 3 1/2" single Dynatech 3 1/2" muff
All comments appreciated
Dave

 

Thanks for the info.

 

Good advice here. I would change the cam to one with lower duration due to the 9.5 or whatever compression ratio an 84 has. When I carbed mine, I ran a 219/222 hydraulic roller which helped boost cylinder pressure. With a Holley 750 vacuum and Weiand dual plane intake, the car ran well.

 

On my 84 I upgraded to a carb system: Edel. Perf. intake, 600 carb, Accel HEI, Crane 274H06 218-218 dur. at .050 on a 106 LSA(old lift rules circle track cam), .450 lift, Summit 152123 2.02-1.60 Summit(actually Dart SS) heads. 4309 Mallory FPR, true dual exhaust with no cat, shift kit, mild stall. AC and smog delete. Air cleaner clearance is close and I later added a cowl induction scoop for more clearance and to get some of that engine heat out of there!!! Awsome low and mid range! Good luck and you can email me at docwilcar@hotmail.com if you have any questions.

 

I read again you plans and think a cam with 226-232 dur. at .050 on a 108 LSA(I assume since you said 108 LC) may give you a fine mid and upper rpm but would have way too much overlap for low speed manners(13* at .050, and I know you need to look at overlap at the advertised duration) unless you have some 3.73 or steeper gears and a 2500 stall. I have 5* of overlap at .050 with my 218-218 cam on a 106 LSA and around 10" of vac when I put the car in gear and it is idling at around 600-700 rpm. Sometimes smaller is better when it comes to cams for street use. A 218-218 dur cam with only .454 lift and a set of heads like AFR 190's will give you around 380 hp at 5400 with a decent carb, intake and headers. Isky 264 Mega cam is a good street cam for a 9.0 c.r. 350 with tons of low and mid range up to around 5200. Had one in my 76 L82 and was a much better cam than the L82 cam.

 

We are talking about a 28 year old car here. IF the engine is close to the stock setup it will have a 624 head w/ a 76 cc chamber, rated at 9 to1. At that spec the cam would be a dog. Swaping to a 64cc chamber will yeild a 10.25scr allowing a later intake closeing point (66 or 68 iirc) quench will be weak to say the least but assuming the factory style dish piston Im stuck with that. btw this setup is for a 3000# 6 speed car w 3.7 gear. An auto with tall gears should back off the valve timeing and open up the lsa to 112 or so as 383VETT points out.

 

Right 108 LC, thanks. Your 218 looks like great mid range punchand moderate scr friendly. 1.6 or 1.65 rockers might work well with that cam. 10" of vac can be a pain, would bumping the idle speed up and playing with the initial timing help? I gotta admit I dont know jack about tuning automatics. A little by product of a few extra rpm at idle is a little more oil on the cam. The AFRs are the top of heap in my opinion, a little more expensive but they deserve a premium price for a premium head. They also work well with a single pattern cam. Ill check out the Isky 264 mega. Rember when overlap was always one of the up front cam specs? I wonder why they got away from that.

 

I havee been playing with my timing to get the engine to 700-750 in gear and the 72 cc Summit heads vs. the 76 cc of the stock 624's really did make a difference in the sound of the cam at the same rpm. If I get the idle rpm too high sometimes the engine after burns a little when I turn it off but is pretty close now. I probably should have gone with the Isky 264 Mega which is on a 108 LSA so has a little less overlap compared to the Crane 274 cam. The 274 comes "up" on the cam really fast so is still very streetable. I may go to a solid lifter Isky at some point, the old E2 Isky from back in the day was a 216-216 duration at .050 on a 108 LSA and Isky can still grind it.

 

Thank you for all the info thus far. I was thinking of going with the edelbrock power package that comes with the performer intake, cam and heads and topping it off with a 600 or 650 edelbrock carb. Also will be installing some long tubes as well with a cat delete. I'm just looking for something that is a little tough on the street. I already have an all out drag car so I'm not gonna go that route again. Something strong, street legal and fun is what I'm after.

 

Im in the process of upgrading my crossfire so I removed the throttle bodies and sent them out for boring and bushing service Im using the Edelbrock performer heads Im also putting in a retro roller cam roller rockers and my new aftermarket crossfire intake

 

Did you buy a Renegade Xfire intake??? How long did it take you to get it??? I hope it fits okay as there has been a lot of complaints on poor fitment and holes drilled incorrectly and other issues. Good luck with your build.

 

 

Yes I have the Renegade intake manifold I also have the Xram manifold havent mounted either one yet Ihave not heard anything about poor quality the thing looks excellent Im gonna install sometime next week I will post pics during the process I was really interested in seeing a pic of the 84 piston so Ill show what I can

 

Yeah it took a long time to get that manifold

 

If you want a picture I took of my TRW pistons on my 84 send me an emal at docwilcar@hotmail.com and I will send you one.

 

Any chance you could measure the length of the runners and the cross section?

Thanks
Dave