302 Headers????
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Junior User
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302 Headers????
Well I recently picked up a 1976 F-100 with a 302 and a 4 speed transmission. The man i picked it up from had a mild cam put in it, an intake, and a 4bbl holley carb. Im looking to put some headers on this and an exhaust. So I was wondering if headers from mustangs would work or only trucks? Also should I put on long tube or shorty headers?
Lead Driver
Joined: Aug 2003
Posts: 6,305
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From: Boulder Creek, Ca
Understand frames same or simular, have a 65 F100 with T18 four speed and 4V 302, installed hooker long tubes and the only issue with clearance was on the passenger side at the crossmember the header flange touched slightly so to get additional clearance I took a 4" grinder and removed some material. Also installed Power Steering and Brakes and there was not problem with clearance.
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So it seems like everyone is set on long tube headers. I was wondering what size I should be getting 1 5/8", 1 1/2" or bigger. I'm thinking of going with the 1 5/8". How much HP do you think this engine will have with the mods on it and the headers added? I hear a 302 produces 195hp stock.
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I think ill go with the low end power I dont have a real need for high end hp. Does anybody have any suggestions on a type of header for me or any links. Im thinking of going with headman's from summit racing.
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Lead Driver
Joined: Aug 2003
Posts: 6,305
Likes: 18
From: Boulder Creek, Ca
As far as hedders, understand Hedman is a decent brand, I went with the Hooker because just happened to place a bid on a set on ebay and was surprise then there where no other bids, ended up costing $36 with shipping.
If intend a 'do it yourselfer' then may want to also look into the hedman offset extentions for getting around the tranny crossmember issue. Another option, posting pic where another FTE member, pro-street, modified to crossmember to solve the problem, I will likely do same with next set of mufflers.
https://www.ford-trucks.com/user_gal...=79912&width=2
If intend a 'do it yourselfer' then may want to also look into the hedman offset extentions for getting around the tranny crossmember issue. Another option, posting pic where another FTE member, pro-street, modified to crossmember to solve the problem, I will likely do same with next set of mufflers.
https://www.ford-trucks.com/user_gal...=79912&width=2
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so is this the same with the collectors 2.5" collectors for low wnd and 3" for high rpms?
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
1.5" with 2.5" collectors is PLENTY for a 5.0, resist the urge to put big pipes behind them too, a 2.5" single will produce a broad powerband with high flow components(mendrel bends and quality mufflers).
An all original '76 truck 302 would probably be a low compression motor(for the era) meaning only 9:1 vs 10:1. It's impossible to say for sure of course without knowing all the dirty details, it could have smog era heads and be only 8.3:1. But even if it does it will make good power if the cam is reasonable, should make between 225-275hp depending upon the combo.
An all original '76 truck 302 would probably be a low compression motor(for the era) meaning only 9:1 vs 10:1. It's impossible to say for sure of course without knowing all the dirty details, it could have smog era heads and be only 8.3:1. But even if it does it will make good power if the cam is reasonable, should make between 225-275hp depending upon the combo.
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Well I recently picked up a 1976 F-100 with a 302 and a 4 speed transmission. The man i picked it up from had a mild cam put in it, an intake, and a 4bbl holley carb. Im looking to put some headers on this and an exhaust. So I was wondering if headers from mustangs would work or only trucks? Also should I put on long tube or shorty headers?
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
No.. pretty much everything from '78 on had a smog pump and the later motors were 9:1. If your motor is all original it's about 8.5-8.8:1