[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: '84 G-body with carbureted CCC



I can help with the swap details, I recently completed a 350 TBI swap into 
a '83 G body with a standard Qjet ( Canadian certification - no ECM).

1)The wiring harness from a full size Van has the same type of firewall 
bung as used on the CCC wiring harness. The harness itself will need to be 
modified to remove extra wires ( leave a few extra in just in case - I 
didn't ) - alternator, starter etc.

 The fuel pump and pickup will fit in the Elky tank with minor mod's. The 
down side is you lose ~ 10 litres fuel capacity unless you extend the pick 
up. This will provide you with the supply and return lines.

The full size van fuel lines are straight which makes them perfect for a 
swap, I used 2 sets to complete. The factory flex hoses work fine.

Given that you already have an ECM you will already have 99% of the wiring 
you will need under the dash. I had to add several wires to get power and 
check engine light to the '747 ecm.

The existing ECM mount will accept the '747 ( I needed to get one from the 
US as they were never installed in Canadian vehicles).

The donor van I used had a TH400 installed, I reused the TH400 kickdown 
wiring to get the TH350 lockup convertor energised.

Electrically the biggest head ache was sorting out how to get the oil 
pressure warning light working as it is connected with the choke heater 
circuit ( no choke heater - no warning light) without re-wiring the dash. I 
subsituted a 1157 bulb for the choke heater and it works ok, just slightly 
bogus. Get a +++ battery cable and power junction box from a caprice cab. 
The only wire that was too short is the knock sensor.

Installing the fuel system took longer than the electrical ( I had already 
prepared the harness before the engine swap).

The vehicle has a 3.8 buick installed so besides the EFI swap I also had to 
swap the engine mounts etc.

The donor vehice speedo VSS plugged into the dash harness ( you may already 
have it existing).



/Marc



----------
From: 	gerhardr@yahoo.com[SMTP:gerhardr@yahoo.com]
Sent: 	June 17, 2000 11:27 PM
To: 	gmecm@diy-efi.org
Subject: 	'84 G-body with carbureted CCC

I drive an '84 Chevy El Camino, factory 305 with "Computer
Command Control" and E4ME QuadraJet carburetor.  Carb has a
TPS and a mixture-control solenoid, that limits the opening of the
fuel rods in their jets.  The solenoid energizes to close the rods in
the jets.  The ECM tries to use this to keep the mixture as lean as
possible for economy and emissions.

Being one who always likes to tinker, I'd like to throw this out. <g>

I know that injection would make a very, very sweet 305, and after
reading up on the TBI pickups, I'd like to try it.  I would like to
transplant the TBI system from a wrecked '87-'91 pickup into the El
Camino.

1. I know the ECM will have to be swapped.  The two ECMs simply
are not the same.  For instance, the one the car has does not have
nearly enough connectors for a "747" ECM to work.
1.a. The ECM wiring harness will have to be swapped, but it's
accessible.
2. The car already has EGR solenoid, AIR solenoid, TCC hookup,
EST distributor, coolant temp sensor, BARO sensor, VSS, O2
sensor, and MAP sensor.  I checked, and the values my O2, MAP,
BARO and VSS give are what a "747" would seem to expect.

So most of the sensors would seem to be covered.  Of course the
throttle body will have a TPS, and will need wires for injectors and
IAC.

Electric fuel pump... got that covered, I think.  Plumbing a return
line into the tank will be a small challenge (OK, a big one - I have
no clue).

I suppose my questions are twofold: are there any "gotchas" I'm
about to walk into unknowingly?  I know I'll need an ECM and the
*complete* engine harness, including all connectors, to make it
work, but is there something obvious, besides the fuel pump, that
I'm missing?

Second, will the performance from the injected engine pay me back
for the time, money and effort?  Can I reasonably expect *any* gas
mileage increase?  Engine's dead stock, good compression,
cranks easy.  The car gets about 14 mpg with an easy foot in town
and 20 mpg on the open highway.  I know I should expect *instant*
throttle response compared to what I'm used to, but what about
gas mileage?

Thanks.


   - Jared Ryan [gerhardr@yahoo.com]
  ICQ #8547412 Yahoo! Pager gerhardr
"Lead, follow, or get out of the way."

__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://im.yahoo.com
------------------------------------------------------------------------  
----
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org





begin 600 WINMAIL.DAT
M>)\^(@H0`0:0" `$```````!``$``0>0!@`(````Y 0```````#H``$-@ 0`
M`@````(``@`!!) &`! !```!````# ````,``# #````"P`/#@`````"`?\/
M`0```$$`````````@2L?I+ZC$!F=;@#=`0]4`@````!G;65C;4!D:7DM969I
M+F]R9P!33510`&=M96-M0&1I>2UE9FDN;W)G`````!X``C !````!0```%--
M5% `````'@`#, $````2````9VUE8VU 9&EY+65F:2YO<F<````#`!4,`0``
M``,`_@\&````'@`!, $````4````)V=M96-M0&1I>2UE9FDN;W)G)P`"`0LP
M`0```!<```!33510.D=-14--0$1)62U%1DDN3U)'```#```Y``````L`0#H!
M`````@'V#P$````$`````````Q@N`0B !P`8````25!-+DUI8W)O<V]F="!-
M86EL+DYO=&4`,0@!!( !`",```!213H@)S@T($<M8F]D>2!W:71H(&-A<F)U
M<F5T960@0T-#`,P*`06 `P`.````S@<&`!(`"@`?`! `! `J`0$@@ ,`#@``
M`,X'!@`2``D`. `&``0`. $!"8 !`"$````P0C8R,4)%-3DP,#9$,C$Q0D5$
M1#0T-#4U,S4T,# P, #?!@$#D 8`! X``!(````+`",```````,`)@``````
M"P`I```````#`#8``````$ `.0# O!F$UIJ]`1X`< `!````(P```%)%.B G
M.#0@1RUB;V1Y('=I=&@@8V%R8G5R971E9"!#0T,```(!<0`!````%@````&]
MFM:$&>4;8A &D!'2OMU$15-4`````!X`'@P!````!0```%--5% `````'@`?
M# $````7````<&EC8VEO;FE 8V%D=FES:6]N+F-O;0```P`&$/7*^.H#``<0
M9 X``!X`"! !````90```$E#04Y(14Q05TE42%1(15-705!$151!24Q3+$E2
M14-%3E1,64-/35!,151%1$$S-3!40DE35T%024Y43T$X,T="3T195TE42$%3
M5$%.1$%21%%*150H0T%.041)04Y#15)4248``````@$)$ $```![# ``=PP`
M``L7``!,6D9UIER0Z/\`"@$/`A4"J 7K`H,`4 +R"0(`8V@*P'-E=#(W!@`&
MPP*#,@/%`@!P<D)Q$>)S=&5M`H,SMP+D!Q,"@S02S!3%?0J BPC/"=D[%Y\R
M-34"@ <*@0VQ"V!N9S$P,R\44 L*%%$+\F,`0"!)!"!C`Y%H96QP()$#\'1H
M(!U092 #X)YA'1 -L &0`Q!S+!QQQ1>@8PGP=&QY') #< <+4!' "8 @82 S
M-7 P(%1"'( =PPN = )O'^$G.#,@1R!]!N!D'S =,Q_P$\ `<&01"Q$@46H1
MP" H(/)#`'!A9 <P`Z >X `@'0:0:1R@)# "(" M( )N(1!%0TTI+B#C"H4*
MA3$I5!V1`_ %$/<:H!S0"L!N!Y $( -2'^%89G5L`R `D'H=H%9M'+)A!" =
M@V$'@!UP>?)P':!O9B>P)N 'T = V0,@8G4G$2DA=1&P']#[)+$=@D,L,";-
M)7 FDB=&^QU $;!L*D #\"A1)W ?P?TA`6(=H 1A)$$O%!>@!&#"=AV@97AT
M<A_P)M'W!Y$C4!^083"A*!$'T3#4^0N (&HK< 5 ,M$<H!&P1R31'( CL&1N
M)P5 *?\DT0= $] $H"2 !; >@")QYP`@!) PP'1C)7XM8R@P\1SP('!U'W ?
MX"*@-\#Y)&!K=1T2*%$D4#,S'8)816QK'S B@6L=)&T7"X %L01A)RU%9&]W
MWP.@`) -L"#0!"!Y"& QH-IO,Z%^)F @,&P=0#%2]S>#'* *L&,=0!\P*P`?
MD/\$$3RB,-$)\"\A'9$X8BM@_G M4CQQ+J,34#"0/#(\HK\=.#B@"U ?,#@B
M%Z!T"'!W`Z ]@"=Q+B6<-T0H5G9_`Y$W@T/3'^ 7H")A,0!I=&=H!4!W0- 1
M<"^085YK!Y$=@2?P*@!R,C!C_P5 `A %P")1'=$>@BMS$>#?$;$I,2$0'U8M
M5&8`T#4Q_Q\P&G PT!S0//% \06P.E#G)% G<"5^1VDPH"O2)(#_/),'0!>@
M(Z ?,!& ,>(#H(\E,4'5*%%/JSDY)2HB_QV")M50YR[S*P`$@1US(K#\<V@E
M<!R $8 O(R.@']"_$; PH#$``R Q-"$!9R,A_G [X#71."(1< 60.E )\#YG
M0^$]<4=R(0$=@B<WY#0W,,!C;25^)I(PT/\$`"0P)Q%0H@1@*P!'D5$S_F,>
MX 4Q66<C4!R +O(O%-]7(@(@-V$GTAV"507P*23_(>$$D!V@)W!6,2#1(G$H
M4/\?P3+1(W<PH$?!/O$E8%I//SO!.N)%\DH%56(?\%1(_#0P(#!A-QZ$*W,=
M@F7$_FLX<3O3)M56]6=D(!(7,/LX@P6@;E8Q-3%840206(#_*X$E?CG020$%
M$!R@*% Z`?T=D6)'8%<@,R$<X&5R6 '['2 I(7,702<""&!N(3O@_6CZ;P,1
M$U G@0AP;L($H/\G`EC432(G`BDA.3($(&J!WR=P21 ?P1TW$7!O2#!N,N,U
MPCZ <F-U.3$C4"4!?W3+).-QJS2 '3)OHA>@+7=HEE2Y0K!B`)!#@!^T,<PQ
M-5G0*O!L8DDS=(]_."(Y,4TB!"!TX!Z ,P-SMUC3'R$&X&<K<"5P1R,A_1_P
M*W_0(: D@#3A'S$!H.\?D#@45W,S`&Y)$"2B!N#_3* GQ3Y!;0%TH0&@+50"
M(/\?(3$R3P1NXB$`(1!5`!=!^SQB'8)K)0! 41&P`( %L-UC+4EA1'E6-X-S
M$[.%`O\Z4!<P&J!4<P.1'8(<\&S6_UW396-/M7$1"K%G-2=&+W#_24&$8C"Q
M6'0=PF,?'9%BE?,I`Q_Q+C@JX4!"83AO(.<O83PB*31%1B!U'( '0/^2D55E
M'<..25PS!" V#V/[GV*B':$J``F (1!64P7P_0M0=6WA8;)9-53B)S<C4/\\
MH@# 0P%/NCDQ6V://B6<]"]-"L!CG>\ER0KT/8 ,,3AE\ (`:2TQ-,]EX S!
MHD,+63$V"J #8/L3T$D1+:1G"H>C&PPPH^9Z1@-A.J5NH^8,@E<1<D$1@61R
M0'EA3,!O`BX?45M33510.OFI+VU=I0^F'09@`C"G3\VH6THK`!V@,3<>@ '0
MDV7Q>R Z,EG04$VKWWFF'51OKA^H7 > 6@! 22.P>2T-P&DN!;!G_[%?K.YZ
M8",021"S?ZA;(5#:-"& +2&X'*!R*O!#8<\?P2PQH&^A<S,VHN<;U5^CYC/Q
M!1!01+JR0QS@=C\?,#G0(V$ZPAZ 2_8S,/HU'20B"% ?<'JQ)>?"L4\#@;Q!
M`B$#8&PB.!-%:#1-12+P=2.@,0!*_R,AN[:&P3<@(W"[T)#E1*9^4%_A.#$?
M\#K ,.!Q82W_:H'$8F\1'Y E`#0@'H!/$_\]@#K 2K)PHBH`<=-2A0J%^S>#
M`V!D+A$KTR;@,O!*H?_&D2:2R89K%2B@2L0\XQV"_\S6"H4=@LVY4*)L\5;$
M*W'_'7&%LB$02#!=$!USR(4K,K\QL0.@*2$*A5=@!!!I@++W24(%D24`;4,$
M$^ $`22A?40>0LUP;W)8H4>P(1%L_QW0$[ ]<4@S64$+@$@P-5'\22<?T-IB
M620#8' !0-+C;Z$E<#QG/H;]AA+<<O]/,0N N)(DHDT@*$ ?T$@2^Q_A5C%Y
M'H#@<AVQ"> %0/_"$1Z R",!@,,83\(G`CBA_RO%(%(X9!YRVXI,01U QI'_
M'(#?I-NVT.8Q``" "U%<8??CQHD5)\5W'L%(,!_0(5#P-RTG.1Q@.&69U\#A
M]\-&P2./33%5(MYETB0NH[]0(R]$'<(J`&NA+6-T32#_)2)O`0=P0N(*A4;B
M)0!=-+LIDL:11@6Q83.!L&7*`O^#PHXDN[$I`SO0!Y'R0E C_PJ%)W *P!\A
MR;&9<+N1<Z3W!; GH4E3(EFQQ*#20W=A]TTQCT;MD&$M5.YT)OONO^_OQ!Z 
M*O S,70[4/&'7/%[UB2/1C(M5/323Z@$($6D1U+)>4%)`2I4+$'/J=$XD1Z 
M;$935#0!1R'_UD!OL#5"%Q &\.@#$^ =$,.&A!Z 0D%23P7'F1$]'H!/$> *
MA076.")-0?Y0AG;F`E@#9I(X(AV"1?#_&''',-<A!W >@ C1`V<&4_\X(ID2
M6( QXG%R3R+X=M^DOS.@B5,PP2H`I#"/35,A$/\OH#,A4H6&A$T"#LHO<1<0
M^U8Q\ -/*D 7$$.0S_70Y_^C\1\0;:$AQ/P&9:''\.&T?RZH,33X,M\$]_(X
M(H=F0>Y#CTULMC=X+AQ 5Q#R4[]/,1-59K+343I QI%0"O#^;6W *Q)#5K9E
M0]+K"#HE^RK",?)SX `H46Z@87*)\?F+<$]+X;%MLE[S,]+UZW_/HCX`CSYZ
M,D+0//+7(7'_"P&!TD;$\)'X,-_0N- G<VM(@-2R;O%P(AR!(@%S_\2@VW""
MD/&6@B!OL?DR(<"_D=+2XCI WG'[(?;@/^8"O]YCVW NQE!U"E:V92I+%OXJ
M6%;[96:POF DP>,3(</_]Y?*`1#AX!(Y,;9E32+]5;](4T;RP\"68!W1;X%B
M09#_;Z#DH9+*&[?*!8=F*='7H_V)\#\/_=;29J%3HS_S2-'_^$##X8,A7T??
M!&4Q6&6VD/_Q</+@@ %8,<P6>]5;H/+@KV:P$0#[D-<U9O@Q="Q1_V(!9L/5
M8&J0@*'V\0^3+N#[*.$O@&?5:,$PU1$B<3"A]4"292Q115AS_=%48%5Q_UN0
M:B%FL!R T'!+`W$B@>'?`V=#8"#!ED'58'G-]?32WU<AQS$J@Z) $/!P^T#"
M4__5,4="UH'R4<TB:%+QEH$!_[[@20/CE<LB`O!R,=H1Y?/?+*2%0M_"04;S
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M4#)#:OA F.#]$0! H:"=`-' M;^?[[TOM;XU-+ZR,J/7MF5]MF "`'V@``,`
M$! ``````P`1$ ````! ``<P(+HRFM&:O0% ``@P(+HRFM&:O0$>`#T``0``
/``4```!213H@`````,Q3
`
end

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org