What are the 73 manifolds off of? If a small block, then yes, probably. The 70 351C manifolds won't fit- wrong block completely

 

i made a bogus boss 302 with a stock 1973 302 block, 351c pistons, and 351c 4v heads. so I need the 351c 4v exhaust manifolds. sorry for the confusion, it always finds me!! thanks, Henry

 

When you say home built 302 B2, you need to be more specific. Is it a true B2 built from B2 parts or a 289/302 with 351C heads? There use to be headers made for a B2 into 65/66 cars. The last one I saw was about 15 years ago.

 

to bad Dodgestang doesn't come around anymore he has a 65 with a 351c. You might find him on the facebook version of VMf?

 

Yes.

 

Tubular Automotive is the only place I know of that ever made 65-66 Mustang headers for a Boss 302 engine. I had a Boss in my '66 Shelby for 27 years and used custom made steel tubing headers. I did not use theirs. You can see the engine in the cover shot of Car Craft magazine July '77. No close up pictures though. I do not believe the 351C exhaust manifolds will clear the shock towers nor will the D/S clear the oil filter. If Tubular Automotive In Ma is not around , the internet is the only source for used ones. I have seen them in the past on epay.
Randy

 

One of my good friends here has a real Trans-Am prepped B2 with headers in his '66 Hertz Shelby.

 

The last Boss in my '66 Hertz car was a '69 T/A engine stroked to 351ci. It ran high tens. The block and heads are now in one of the two original '69 Shelby Team cars.

 

I've heard good things about this company, but have never personally used them :
Ford Powertrain Applications

DannyG

 

The factory Cleveland exhaust manifolds will not fit.

I have a Street Boss 302 in my '65. The block is a current production Ford Racing M-6010-BOSS302 4 bolt main block with a standard 302 crank, B2 rods and B2 pistons. It has Aussie closed chamber 302C (yes, Ford of Australia built a 302C) 2V heads and an old B&A Street Boss intake. I used the FPA headers for the small port 2V heads and he also builds them for the large port 4V heads. I had to dimple the left shock tower for the #6 primary tube, otherwise they fit perfectly. I have an old Lakewood scattershield with factory Z-bar linkage and a T10.
The FPA headers will not fit with the original '65 engine mounts. I had to switch to the '66 style mounts.

FPA headers are not cheap nor are they inexpensive. A pair of them coated and shipped will leave you enough change from a $1000 bill to take your significant other out to eat.

 

I forgot, SilverBlueBP has a new B2 in his fastback with headers. You could PM him and ask what he is using, but he is using iron 289 heads so that may not help much.

 

If it has 289 heads it's not a Boss 302. The Cleveland heads were the primary change that made a 302 into a Boss 302.

 

Didn't the boss have hipo 289 rods in it also? Didn't it also have a forged crank? If my old brain cells remember this right, a 302 with Cleveland heads on it is a Clevor and not a boss 302 unless you have the forged crank, hipo type rods and boss specific pistons. Oops forgot, 4 bolt main special block also.

 

I have a ford racing 347 which is based on a boss 302 block in my 66 fastback. I used headman 88406 which I purchased from summit, fit perfectly

 

The block is only part of what determines exhaust header fitment. The main difference is the cylinder heads.
Boss 302, Boss 351, and 351C 4v exhaust port

Windsor based Exhaust port which is what the new boss 302 based long blocks offered by Ford Racing use.

The block does matter because it effects deck height and can change how the headers fit and what they contact but the main issue is the heads.

 

My little brother bought a new 1969 Boss302, i loved that engine. so I finally got the time to build a Bogus Boss302 . Not a real Boss 302 , but it will look and sound like a Boss302, and that is what I am going for. It does not need 4-bolt mains to drive around Harlan, Iowa at 35 MPH. although it WILL be going faster on the old highway 59 north of town, my own Bonneville! Thankyou asll for the help. i did find Dodge boy or whatever his name is , and is very helpfull. Just so you guys know, i did put a 428 1966 Police Intercepter in my little brothers 1964 fairlane hardtop, with a t-10 4speed in 1969. yes I did use the gas axe, but it was sure fun waxing 428Cj mustangs asses with it.Henry.

 

Ok so we are somewhat arguing semantics here. Although Ford Performance Parts clearly denotes the 4-bolt block as a BOSS 302 block.

https://performanceparts.ford.com/part/M-6010-BOSS302

 

They also have Cobra Jet engines that clearly aren't FE blocks....ha ha

 

Ford owns the rights to the "Boss" and "Cobra Jet" names so they can stick them on anything they want to. They obviously recycle those names because of their legendary status. But IMHO it is a travesty to put those names on current production engines because, like others on this forum, I was around in the late 60's and early 70's when those names earned their reputation.
But Ford can do anything they want to without my approval.

 

I believe also there is some legal precedent to refile for trademarked names and use them to keep the claims alive. Trademarks don't live for ever.

Having said that, I am NOT a lawyer and it has been several months since I stayed in a Holiday Inn Express.

 

Some of you need a history lesson.
In 1968 Ford's small block "racing" engine was the tunnel port 302. this was a ''wedge" head like a 289-302 that had huge round ports and was a near complete failure as a race engine. In October ( after the Trans Am season ended) testing began for replacement heads. The tunnel port 302 block already had four bolt main blocks as a carry over from the GT40 and Indy engines and the same for steel cranks. Ford Engine Engineering was in the middle of developing a new engine called the 351GT as a replacement for the 351W already in production for the '69 model year. The 351GT ( later to be known as the Cleveland) featured a canted valve layout and looked like it could be "grafted" onto the 289-302 block with little effort. A few test engines were prepared along with a couple with Gurney Eagle heads to be race tested at Riverside Raceway here in California in OCT of '68. Shelby Racing company tested both engines and the Gurney Eagle engine ran the fastest lap times but internal politics9 and cost) made the "Sedan Racing 302" a reality. The Boss name had yet to be coined. A 90 day crash program was created for the 69-1/2 Boss 302 model. The 4 bolt main block was used with very minor modifications and new head castings were created along with it's special intake manifold. the 289 hi po rod had already been switched to the football headed rod bolt in '68 and the GT40/Tunnel Port 302 balancer was given the proper amount of imbalance along with a new 164 tooth flywheel. the initial plans called for a more exotic oil pan but costs led to the baffled production pan and windage tray.

The new ford Racing Boss block has little in common with the original blocks.

 

Holy crap, you guys drove this one right off the rails. The OP described exactly what he has and needs and its turned into a debate of what makes a correct Boss 302 and he still hasnt got an answer

 

Its important that people are made clear on what this guy has and what is correct. You have people suggesting that he can buy the same headers that fit a modern Ford Racing boss 302 long block with windsor based heads and have it work. Thats not a "Boss 302" to anyone that knows ford performance history. To most of us a Boss 302 is a 302 Windsor based block with 351C 4v heads, which is what a Boss 302 means to the OP as well.

 

And I was part of that derailment. Apologies to the OP. I originally posted as a offering that it could be done and that sbBP had done it as well, but then remembered that sbBP’s car has 289 heads so that might not be of benefit to his original question. I did text my friend with the Hertz, but he hasn’t replied.

 

 

Go back and read reply #6. I spelled it out pretty clearly. TUBULAR AUTOMOTIVE made a conversion header. Ford Powertrain Applications makes a tri Y which a Boss 302 head doesn't like.

 

Ford Powertrain Applications makes a tri Y which a Boss 302 head doesn't like.

Here is FPA's list of headers for Mustangs and Cougars.

Ford Powertrain Applications

Header #10 is for a '65-'70 Mustang with the Boss 302 4V or Street Boss (Semi Boss, Bogus Boss or whatever you want to call it) 2V. It is a 4 tube header. Nowhere on the list is a Tri-Y for the Boss/Cleveland heads.

 

My apology. I thought it was a tri Y. A friend has a set on a 347ci Boss I built for him in a '66. I should have remembered

 

Hey, we can't remember everything about everything! Thanks for sharing all of your expertise in Ford engines with us.

 

Silver Blue BP, Not at all on topic, but I have to ask about your signature picture, and your saying about money and happiness.

It looks like you're fogging mosquitos, and unless that display was planned, that would make me sad. I imagine after an application of talent and money, you'd be happy again though.

What's the story behind the picture?

Perry

 

Perry,

That was a dumb mistake when building the latest engine. Somehow missed the fitment of the intake to the mating block surface after all the cutting of the block and heads. All fixed now. Just had to mill the intake a little.

I did fog Hallett for everyone at the Shelby meet [emoji16]

 

When I do that , it's coming off of the tires. LOL Sorry to hear you had a problem like that , glad it wasn't worse. I keep promising Wicks I'll come back there for the drag event and one day I will. Maybe next year.

 

It wasn't a big deal, nor did it do anything bad to the motor. Lesson learned...don't try building a new engine with parts that don't initially fit while undergoing chemo treatments :grin2:

There, I've completely de-railed this thread.

 

No we already accomplished that long ago.