Does anyone have any pictures of an 80's exhaust manifold with the cat removed and a divider plate installed? I read were you can make a plate to replace the large cat mounted on the manifold with a divider and run two 2 in outlets from it . How would you think it would work instead of headers? It would solve clearance issues I have with putting headers in my Bronco with A/C.
80's cat exhaust manifold mod
- Thread starter larryejoh
- Start date
All football exhasts saw duty in high mount blue 81 to 83 b and x code 87 to 92 hp 3.3 so it does fit. About 30 percent of all 81 to 83 fox fords had high mount blocks with c3 autos.The rest were lo mount grey engines with C5s.From 81 to 82, a C4 auto could be low or highmount, but all manual trans cars from 81 to 82, when the T4 and SROD were withdrawn due to emissions, the engine was always a blue high-mount. The big bore 4.5 inch hole works best on a 250, where height of the block gives lots of extra room.The 3.3 in either form can take a 4.5 inch exhast, and there is room, but the starter has to be 81 to 83 Fox for highmounts.
Looking for frankboss, rmoe88. These guys have gone into the Tempo central point injection options like you. The stock 80s stuff is very good, and you can fit EECIV parts to a Fox body 3.3 or Xshell 4.1 and use just the HSC 2.3 or 2.5 CFi since the little 2300 and 2500s had the same 85 and 100 hp rating the 200 and 250s did in 1972 to 1983.
I'm busy making my Holley carb adaptors and EFI units work for stock log 200 and 250 sixes, so cant help with CFi and TBi.Throttle body EFi is the most time consuming of swaps, but you can use stock Ford EEC iV computers,Duraspark and or TFi ignition , even wastespark EDis, but the stock primary converter holds the o2 sensor Ford used for Egr and bypass valve operation. In 200 equiped x shell Falcons, Cometes, Monarchs and Mavs and Granadas, the converter might not fit. In a 250 x shell, there should be enough space.
Back in 09-24-2012, I saw an 85 Tempo, and three CFI units from this would fit anywhere three 1946 Holleys would go. A 95 hp an injector, that's 285 hp of fuel supply for just 75 bucks (normally 25 dollars for the ECU, TBI, just run three and convert to Thin Film ignition and your eating 5.0's for breakfast)
Looking for frankboss, rmoe88. These guys have gone into the Tempo central point injection options like you. The stock 80s stuff is very good, and you can fit EECIV parts to a Fox body 3.3 or Xshell 4.1 and use just the HSC 2.3 or 2.5 CFi since the little 2300 and 2500s had the same 85 and 100 hp rating the 200 and 250s did in 1972 to 1983.
I'm busy making my Holley carb adaptors and EFI units work for stock log 200 and 250 sixes, so cant help with CFi and TBi.Throttle body EFi is the most time consuming of swaps, but you can use stock Ford EEC iV computers,Duraspark and or TFi ignition , even wastespark EDis, but the stock primary converter holds the o2 sensor Ford used for Egr and bypass valve operation. In 200 equiped x shell Falcons, Cometes, Monarchs and Mavs and Granadas, the converter might not fit. In a 250 x shell, there should be enough space.
Back in 09-24-2012, I saw an 85 Tempo, and three CFI units from this would fit anywhere three 1946 Holleys would go. A 95 hp an injector, that's 285 hp of fuel supply for just 75 bucks (normally 25 dollars for the ECU, TBI, just run three and convert to Thin Film ignition and your eating 5.0's for breakfast)
larryejoh":1yue4b96 said:
Yes, Ford changed the part number with the blue high mount starter 1981-1983 engines with new exhast manifold. C3, C4 ones were the same.
The low mount 200's came about in 1981 modle year, but they got a gray engine from 1981 to 1983, with the standard small block V8 or V6 starter. C4 and C5 ones were the same.
