What goes where?
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Junior User
Joined: Mar 2008
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From: Bartow, Fl
What goes where?
I just slid a 89' 302 into my 81' and now comes the hard part.
I would like to know if anyone knows if on a 81' the dizzy need full vac all the time or rpm vac. from the carb....long question short, what side of an edelbrock 600cfm carb do I hook to the dizzy? and now onto the tranny...
I have a vac line poking up behind the block from the tranny same question... I think it's for the passing gear, right? So should I use the same port ( if the carb needs it too)? I have pic's of the trans vac.
Picasa Web Albums - Sam - 302cid
and what is the big vac port in the middle of the carb used for? ( I think I'm supposed to hook it up to the intake? right?) Here's the pic for that
Picasa Web Albums - Sam - 302cid
Does any one have a vac diagram for this thing?
You guy's seem to know more than the speedshop guy's! Thanks
Don't think I would have even tried this without this fourm!
THANK YOU I loved pulling that old dog out of her house.......
I would like to know if anyone knows if on a 81' the dizzy need full vac all the time or rpm vac. from the carb....long question short, what side of an edelbrock 600cfm carb do I hook to the dizzy? and now onto the tranny...
I have a vac line poking up behind the block from the tranny same question... I think it's for the passing gear, right? So should I use the same port ( if the carb needs it too)? I have pic's of the trans vac.
Picasa Web Albums - Sam - 302cid
and what is the big vac port in the middle of the carb used for? ( I think I'm supposed to hook it up to the intake? right?) Here's the pic for that
Picasa Web Albums - Sam - 302cid
Does any one have a vac diagram for this thing?
You guy's seem to know more than the speedshop guy's! Thanks
Don't think I would have even tried this without this fourm!
THANK YOU I loved pulling that old dog out of her house.......
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From: Virginia
This line for the trans can go to the manifold vacuum tree fitting, or the plastic vacuum tree mounted on the firewall above the engine. Don't forget to hook the plastic tree up, since it has your heat and A/C controls on it.
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From: Virginia
Port #2 looks like the PCV valve port. This has a big line that goes to one of the valve covers with the PCV valve. You need to hook this up to keep the inside of the engine clean.
Plug the rest of the ports on the carb, and leave the dist line disconnected. When you get it running, and get the idle set, pull the caps off till you find one that only has vacuum when you rev the engine. That's the one you want to hook to the dist.
Thread Starter
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Junior User
Joined: Mar 2008
Posts: 53
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From: Bartow, Fl
Firing order?
ok so this 302 came out of an 89' f150 so is it the reg. firing order?
It has roller lifters in it I think
Picasa Web Albums - Sam - 302cid
so does that mean the 351 order?
It has roller lifters in it I think
Picasa Web Albums - Sam - 302cid
so does that mean the 351 order?
Cargo Master
Joined: Jan 2004
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From: Cook Forest and Irwin PA
Port #2 looks like the PCV valve port. This has a big line that goes to one of the valve covers with the PCV valve. You need to hook this up to keep the inside of the engine clean.
Plug the rest of the ports on the carb, and leave the dist line disconnected. When you get it running, and get the idle set, pull the caps off till you find one that only has vacuum when you rev the engine. That's the one you want to hook to the dist.
If this thing has to be somewhat legal...
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From: Virginia
Is that always true? Emissions of the era used vaccum like that with a chopper to not lose advance if you cob the throttle, AND they used a TVS (thermal vacuum switch) to give high vacuum at all throttle openings when hot to cool the head temps (NOx concerns)
If this thing has to be somewhat legal...
If this thing has to be somewhat legal...
On the firing order. If the 302 you installed was a non-HO engine, then it has the old 302 firing order. If it's a HO engine, then it has the 351w firing order. If someone changed camshafts, then it could be either one.
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Posting Guru
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From: Niceville, FL.
Click this link: Edelbrock.com - Carburetors & Accessories - Intro and then click on the manual link. The exploded views identify all the ports.
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From: Virginia
No, roller lifters does not make it an HO. All car 302's had roller lifters around 86-up, and I think the truck blocks had the block cast for them, but did not start using the roller lifters till a little bit later.
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The carb vaccume fitting that goes to the distributor won't have any vaccume at idle but will have high vaccume just above idle speed. It will then slowly decrease under a full load and high RPM. The big fitting you show is for the PVC valve. The transmittion must have full manifold vaccume.