Author Topic: Under Construction  (Read 2087 times)

vtgt500

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Re: Under Construction
« Reply #15 on: December 05, 2018, 02:29:08 PM »
My TX 66 notchback going back together with Group II mods.
sat in storage in Ft Worth 1984 ~ 2008

289 +0.040" going back together with 1969 351W heads, exh ports opened up, intake ports cleaned up

I too had a 70's vintage Ford Muscle Parts Stage 5 Dominator 302 build.  Included '69 351W 4V heads cut for GT40 valves,  Crane roller rockers, C90Z-9424-D intake, C7FE-6250-A LeMans cam, 12.5:1 pop up pistons, and Boss 302 balancer.  The combination worked amazingly well enjoying it for many years.  Still resides on an engine stand awaiting a Falcon restoration.  Only imagine what current cam and head designs contribute.

gt350shelb

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Re: Under Construction
« Reply #16 on: December 05, 2018, 08:51:30 PM »
this is still in the collecting parts stage ......67 289 auto originally britney blue with black deluxe  interior. I bought it from a retired d/c police officer  car has a bad 80s paint job on it . but structurally it is  very clean . the vinyl roof has rusted the roof pretty bad . SO if i have to cut the roof and 1/4s off i might as well put fast back parts back (evil grin)  back to brittney blue  and black interior  331 / 347  /427  stroker small block  manual trans . daily driver kinda day 2 car  ......non resto mod   . Something that gets used all summer  and  i can take anywhere .   
Some where some one is driving their collector car for the last time but they don't know it . Drive your car every time like it could be the last memory of it .

SNAKEBIT

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Re: Under Construction
« Reply #17 on: December 07, 2018, 11:31:07 AM »
6R07mi, I didn't know you could put 351 heads on a 289. How much hp do you think it will make when you are finished with it? Can both Windsor and Cleveland fit on that engine? What about the 351 M. What does M stand for? I was told Mitzer.
Waitin' for the day I get my first '70 Shelby convertible!

TJinSA

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Re: Under Construction
« Reply #18 on: December 07, 2018, 01:56:48 PM »
'69 351 heads had larger ports, but also larger combustion chamber requiring pop-up pistons.  In the old Muscle Parts building guides, it was the head of choice for Stage 3 & 4 builds.  I'll find the pages and post later this weekend.
Tom Kubler
6S296

Bob Gaines

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Re: Under Construction
« Reply #19 on: December 07, 2018, 02:22:58 PM »
'69 351 heads had larger ports, but also larger combustion chamber requiring pop-up pistons.  In the old Muscle Parts building guides, it was the head of choice for Stage 3 & 4 builds.  I'll find the pages and post later this weekend.
It is a advantage for early high compression engines to be able to lower their compression ratio slightly to run better on lower octane fuels and also benefit from better breathing. Not a factor back when when premium gas was 98-100 octane but now when you are lucky to find 93 octane lower compression ratios are factor on pleasure driven cars. The 351W head would be a budget minded modification now days. Of course any of the after market aluminum heads are a better performance choice over a stock 351W head.
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

6R07mi

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Re: Under Construction
« Reply #20 on: December 07, 2018, 02:46:05 PM »
6R07mi, I didn't know you could put 351 heads on a 289. How much hp do you think it will make when you are finished with it? Can both Windsor and Cleveland fit on that engine? What about the 351 M. What does M stand for? I was told Mitzer.

Snakebit, the old Ford Muscle Parts Catalog outlines the different "stage" mods for the different engine familes,
The 351W heads are a "poor mans" GT40 head upgrade, it requires different head bolts / fasteners, matching the water ports with the intake side gaskets. HP expectations are related to compression ratio, cam selection, porting, carb etc.

If competing in vintage organizations that do not allow modern aluminum heads, only period iron heads it's one option.
The fast guys are likely cheating anyway, I don't have the big budget and wanted to build a true 60's era mod motor.

Mounting a 351 C head = Boss 302, 351M ( M=Modified ) heads are not worth messing with.

regards,
jp
« Last Edit: December 07, 2018, 02:52:19 PM by 6R07mi »

SNAKEBIT

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Re: Under Construction
« Reply #21 on: December 07, 2018, 07:35:00 PM »
Thanks everyone for filling me in on the 351 head info. So, the Cleveland heads are really the only ones worth using. Ok. Thanks.
Waitin' for the day I get my first '70 Shelby convertible!

2112

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Re: Under Construction
« Reply #22 on: December 07, 2018, 09:21:31 PM »
Thanks everyone for filling me in on the 351 head info. So, the Cleveland heads are really the only ones worth using. Ok. Thanks.

Cleveland heads can be used on a Windsor block. NASCAR has been doing that for years and has been copied by the other manufacturers. They live at high RPM's.

Of the 60's Windsor iron heads, '69 351W heads are some of the better heads but not the only good Windsor head.  😎

427heaven

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Re: Under Construction
« Reply #23 on: December 07, 2018, 10:07:13 PM »
Thanks everyone for filling me in on the 351 head info. So, the Cleveland heads are really the only ones worth using. Ok. Thanks.
[/quot                                                                                                                                                                                                                     Cleveland heads flow better ,perform better, but remember you need a custom intake manifold like a BA track boss or street boss intake and you will need a competent machinist to modify the water ports. Also will need new headers it all ads up to some $$$$$ but you will like the results.