Need help on carb for '83 5.0

david07 · 01-10-2002, 09:58 AM

Just got a rebuild on my '83 5.0. Modest: cam, 3-angle valve grind, mated to long headers and dual 2 1/2 inch exhausts. I figure I have 250-300 hp. Carb was rejetted stock and now needs replacement. What should I get?? Intake manifold? I live in New Jersey and drive so its got to pass inspection. Also: what hood should I get to better feed the K&N with the new top element?

PKRWUD · 01-10-2002, 10:13 AM

You need to be more specific. What's the compression? What are the lift and duration numbers on the cam? Which heads, and what's been done to them? If you have a stock carb/intake/heads and a mild cam, you are no where near the horsepower you think you are. List the specifics and we'll go from there.

Take care,
-Chris

david07 · 01-10-2002, 10:32 AM

I'm sure you're right on the hp - wishful thinking for sure since it dies when I stab the gas! Be posting the details asap.

thanks

blue00gt · 01-10-2002, 02:19 PM

I put the Edelbrock Performer intake, cam, and 600cfm 4-barrel package on my 79 pace car and it really woke it up, especially with dual exhaust. Those parts are all smog legal. If your cam is lumpier than stock but fairly mild, it should work well with the Performer intake. If you plan on changing your combo later, you may want to get a Holley instead of the Edelbrock as they seem to be a little easier to tune.
Definitely get some heads if you are serious about making power. There is no way you will make even close to 300hp with the stock heads that came on the 83 as they have pitifully small valves.

matt cook · 01-10-2002, 02:28 PM

the 83 should have the same size valves as any later 5.0...

I just took the heads off of my 82, and the valves are the same as those in an E7TE. It's just that the ports were terrible on the early 80's heads - that and 67.5cc combustion chambers. If you think that the air bump in an E7TE's exhaust port is restrictive, look at these pre-87 heads.

01-10-2002, 09:58 AM	#1
david07 Registered Member Join Date: May 2001 Location: new york, new york Posts: 5	Need help on carb for '83 5.0 Just got a rebuild on my '83 5.0. Modest: cam, 3-angle valve grind, mated to long headers and dual 2 1/2 inch exhausts. I figure I have 250-300 hp. Carb was rejetted stock and now needs replacement. What should I get?? Intake manifold? I live in New Jersey and drive so its got to pass inspection. Also: what hood should I get to better feed the K&N with the new top element?

01-10-2002, 10:13 AM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	You need to be more specific. What's the compression? What are the lift and duration numbers on the cam? Which heads, and what's been done to them? If you have a stock carb/intake/heads and a mild cam, you are no where near the horsepower you think you are. List the specifics and we'll go from there. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

01-10-2002, 02:19 PM	#4
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	I put the Edelbrock Performer intake, cam, and 600cfm 4-barrel package on my 79 pace car and it really woke it up, especially with dual exhaust. Those parts are all smog legal. If your cam is lumpier than stock but fairly mild, it should work well with the Performer intake. If you plan on changing your combo later, you may want to get a Holley instead of the Edelbrock as they seem to be a little easier to tune. Definitely get some heads if you are serious about making power. There is no way you will make even close to 300hp with the stock heads that came on the 83 as they have pitifully small valves. __________________ Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s

01-10-2002, 02:28 PM	#5
matt cook Registered Member Join Date: Dec 1998 Location: Richmond, Virginia Posts: 449	the 83 should have the same size valves as any later 5.0... I just took the heads off of my 82, and the valves are the same as those in an E7TE. It's just that the ports were terrible on the early 80's heads - that and 67.5cc combustion chambers. If you think that the air bump in an E7TE's exhaust port is restrictive, look at these pre-87 heads. __________________ 1982 Mustang GT

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01-10-2002, 10:32 AM	#3
david07 Registered Member Join Date: May 2001 Location: new york, new york Posts: 5	I'm sure you're right on the hp - wishful thinking for sure since it dies when I stab the gas! Be posting the details asap. thanks