The only reason I posted that....... [CF vs TPI] was to give us crossfire owners an option they might want to consider?? Before they just thashed it and went to something else......to gain more power out of a poor performing, 350-SBC-CF in stock configuration. OF COURSE the 418 roller cammed F.I.R.S.T. TPI built car WOULD STOMP! any Crossfire inducted car[that 418 was traction limited]. However the money spent and completly changing the whole car to the extent done? I ask a question? what do you want from your 82-84 Vette? And how much time and money are you willing to spend? If you want a Viper destorying 82-84 Corvette ya better pull that CF-intake OFF, because it AIN'T going to happen. BUT if all ya wanted was a respectfully running 82-84 Vette that would say run mid-high 13's? in the 1/4, be basically the same car, and could still drive anywhere? HERE was an option that maybe had not been considered.....before? That was the ONLY reason for the orginal post- "Crossfire vs Tuned port" I really HOPE this clears up why I posted that org. post. Race on!.................w/whatever you got!!

 

Read your original post did not take it to be any real rant only trying to convince someone the crossfire has some potential not to be written off so easly.

418 sbc are just nice starter motors for a 815 cu. BBC if only there packaging were a little smaller. All kidding aside someone can always bring up a bigger engine can out do a smaller one.

 

I am VERY glad there are some people?........gettind it! That was all the org. post was meant to be..............a possiblity? an option? Our [the LAST C-3], 82 Corvettes are really getting rare my car as optioned [silver ext. dark blue leather int. only 711 were built w/ color & options my car has. And since I've had the car [bought in 2000] the car has more than doubled in value paid $6850 for it, now worth closer to $18,000,[75k on it] and has been garage kept up until last year now covered outside [I hate it!outside!] IF I had pulled that CF intake off and junked it? quess what? you just severely "de-appreciated" your car in value [if you do at least keep all your org. parts} I have a race car so for ME I just wanted a decent powered vette and still for the most part, be a factory car [ what little ext. changes on my engine can be easliy put back stock, keeping the value of my now gettin old vette intact]....................Race On!........note: "I made a mistake waaaay back in the day and "nearly" gave away a 1965-426-Max/Wedge Ply. Satellite [all factory untouched car] that IF my dum-a#$ would have kept that car.......................would put about $100,000-or more! in my pockets today. Don't make my mistake."

 

Last thing I need to mention is I paid $6850 for it and [to date] have about $11,000 in it that includes the COMPLETE engine re-build so I am still well below the curve on money spent and cars worth...only thing left for me is doing a few modifications on the 2 tb's and injectors and I'm done!! and getting it back in the car, hard part has been finished, all downhill now.

 

I'm a fan of the looks of the cross rams used on the 302s would they be the best streetable manifold for even bigger displacement builds no! You are correct in that the cross ram fuel injection makes your car unigue and it has a better look to it when you open the hood then the later fuel injections. I did not take your original post as trying to convince anyone the cross ram is the best that can be fuel injection out there only that it has more potential then it may be given credit for with some modifications. Hell this whole C3 tech forum is 75 percent on how can i modify 70s, 80s engine for more power. Does this mean that these 75 percent should simply get rid of there gen1 engine put in a gen3 engine because it makes more power with no modifications. Do we all say gee why you wasting your time on that engine. Or heck simply bolt in a huge cubic inch bbc no sense you wasting your time on any sbc there a direct bolt into any C3.

If anything others rent into a rant of why are you trying to talk this system up. So don't let it bother you if they have a closed mind to it.

 

Thanks!

 

Ya u got it............................ I'm laughing!

 

I wasn't the.............one raaannting?? cas dam! did I get some RANTS back! Just an option, possiblity, something to think about? So yea simmer down a lil please just, an information post? What i WANT to see is a---12V71 twinturbo/supercharged/aftercooled 2-stroke Detroit Diesel in ANY Vette! Around 700+hp@1400+ft/lbs of torque in a marine application which is what ya want if yer gonna put THAT engine in your Vette. Plus behind the 12V71TTAADDiesel you'll need a 18 speed Fuller/Eaton trans. (hi-lo & splitters on the shifter (once ya get roll n DON'T use the clutch!) w DUAL rears w/ 3.55 gear's and 44.000lb axles sssssssshow me sumthin!! ( an ole GM built biger ones IF that ain't enuff!!????? like 92V's-110V's and so on.......) At least keep it all GM!! btw the 12 means how many cly. the...V.....means V-configuration (like V-8) AND the last # means how many cid. is in each cly..... so 12V71 is 852cid total! hammer down!

 

All ya would havta do is cut the whole hood/front out and remove windshield and then all ya knee ta do is bolt it to the frame--car won't even get dirty. jus jok n..........I think?

 

Those #'s are FACTORY-rated......you could tweak it and get waaay more out of it!!

 

Bet the guys in C4 tech would like to hear of your Xfire success

 

ALMOST COMPLETLY done. Don't wanna post to much until I can absolutly PROVE it. Thanks

 

MAKE SURE you are looking up the RIGHT engine and application cas yer gonna get anywhere from 350hp-705hp--TTAA is what you gotta find to get the HIGH-rate so ya don't think I'm B.S. n. on that???? race on!!

 

Naw 12V71s were a little over rated on power i guess you could claim originality being GM. Id look up a 3408 V8 cat 1050 cu. or and old KT450 cummins the 525hp version of it 1150cu. Then at the parking lot bullsh-t conversations you could laugh at bbc, what you only have a 572cu your kidding me. A 350 chevy would then blow your doors off but it would look so impressive in size lol. I'm thinking it might be a little nose heavy lol.

There was a guy in the 60s built a fiberglass body off of his 34 ford sedan put a V12 allison aircarft engine in it. First place he went in it down to the local car hop for a burger lol. Thinking he called it, Lil Al.

I have been tempted to take an old KW conventional truck i have build a new frame for it remove the front axle of the tandum. Chrome up the 3406 cat a bit make a pickup out of it.

 

Yep 3408 [uderrated at 450hp@over2000ft/lbs torque] or 3412! Cat power!!! I was think n DD jus ta keep it all GM those ole 2-stroke's made the HP however the were down on torque in comparision to the 4-stroke diesels..............we are jus kidd n here.......right? Wake the dead in DD build at full throttle and hit the jake w/straight pipes! yep! btw if ya use a ole DD 2-stroke make sure ya got splash shields for oil leaks! EVERYWHERE! And expect very low mpg's! omg yes LOL a lil nose heavy! however VERY impressive! jus think HOW many Vette owners can claim there engine has Twin Turbos AND 2 superchargers??? down!

 

With NO jok n aside.....back in the day! I wanted to put a 3208 twin/turbo marine app. Cat in a Chevy pic-up! rated at around 400+hp [marine application] w/that engine you could get 3200+rpm's out of it and since ya ain't pull n no weight it might? stay together! Love those 3406's! at [636cid-3208] a comparative small engine? It might fit????? turn the boost up & fuel!!! no need for smoke screen jus hit the throttle! C-10/V8 Cat!! [probably better off in a C-30 dually? down! wait a min! this b Vette Forum! The KW lowered and chromed out hellya now THAT would b a pic-up!! NO lack of torque w/3406!!!

 

YEP!!

 

IF your intersested? I spent HOURS porting the CF got it to flow = or above a Holley Contender, that challenge was the 1st obstacle. to then see what I could put together on the rest of build, to MAXIMIZE the CF. Keep the cid down [383 IMHO]would be TOO big w/the ported CF/cfm potential [wish I could get a Renagade? broke now} anyway keeping cost down..0.30 bore, liteweight forged pistons and rods-low friction rings, HEAVY casted heads from GM crate motor FULLY ported, kept the 1.94/1.60 valves,w/ pistons used and careful selection of head gasket thickness got comp-to-9.8:1 w/160 thermostat able to run pump gas, stock crank, 440/454 Comp-Cam, I KNEW I was going to need bigger inj's and bore TB', to 51mm, however the rest of the engine was done and ready soooo I went ahead and put it on the dyno anyway[had about 2 FREE hrs on the dyno] well after get n everything hooked up and NO acc. on engine, 1-5/8"+3" collectors SS headers, after diddling w/timing-f/p etc..W/stock inj's >set at 15psi, best pull was 368hp@388ft/lbs at 5600rpm's[peak hp] at the crank. However was leaning out in FACT the more I turned the f/p past 15psi the MORE it leaned out! I EXPECTED THAT! at high rpm's so I know what I got. theres a lil more in it w/2 CHEAP inj's and get n the TB's bored........since after "evil woman" divorce $$$ hard ta come by now. Thankfully the engine was done before s#$t hit the fan. Anyway I expect a lil more out of it w/tb/inj increase. Maybe 375hp MAX! only cost me about $2500 on the ENTIRE engine [and alot of work by me ....keeping cost down]. Cheaper than carb/intake swap+complete engine overhaul AND keep n a rare 82/CF- Vette.......intact. The last C-3.down! and OF COURSE u could get a lil more w/ retro roller cam/rockers$$$$[high rpm gain there] and aluminum heads$$$$ probably increase comp/10.5:1 and keep detenation......at bay? however ALL THAT woulda cost about as much as the entire engine build? put n ya at or above $5,000 on cost w/ NO more than MAYBE a 30-40hp increase, and doubt that much???? [$$$$ vs potential vs hp vs cid vs cfm ], REMEMBER! your limited by CF/intake and Tb's. So if I can ONLY get 375hp out of my 355cid Vette and on the cheap! and keep n it comparativly stock I'M HAPPY! plus a few tricks I used from past success & failures......get the RIGHT combination STARTING w/CFM vs CID, then build the rest to that # so 383-400 and stock CF-intake IMHO No.[w/Renagade YES!] To each there own, good luck!

 

You would like a truck called pissed off pete, V12 71. Just you tube " pissed off pete " watch him pull into the local car show with it, several different videos of it.

 

If TBI injectors are anything like modern day injectors yours could have been maxing out their duty cycle (dont know)making it lean