Cam for 3.3 Mustang

[roghax85]

Hello all.

Againg me for help.

I have ford 1966 200cid, 6 Cyl, stock

and I want to buy it: http://www.summitracing.com/parts/CCA-65-236-4/ cam

but I think maybe I need new rocker arms, to 1.7 ratio.

but I just find for 1.6 and very expensive.

where can get a set to 1.6 ratio or 1.7 but not so expensive?

I have now right non-adjustable rocker arm now right.

Thanks and sorry for my English.

 

[bubba22349]

Hi welcome to the site stock rockers were 1.5 ratio so cam lifts and duration are based on using a 1.5. Besides the 1.5 there are 1.6 and 1.65. Don't know of any 1.7 that are made for the Ford sm sixes, are they are made in Australia? Here are some links for those parts, good luck

Rocker Arms

http://www.classicinlines.com/products.asp?cat=38

Cams

http://www.classicinlines.com/products.asp?cat=117

 

[170-3tree]

Yes, the rocker arms aren't cheap, but well made. I think the cheapest option is trying to fins used ones somewhere, but that may be few and far between. But luckily, if it isn't a reground cam, the stock rockers will work fine for you, just less lift.

Welcome to the site as well.

 

[xctasy]

Its possible to add offset bushes to a down size rocker shaft to increase the rocker ratio of a stock 1.5:1 ratio to 1.69:1

An aftermarket 1.65:1 becomes 1.86:1.

The process is to down size the 20 mm rocker shaft to a solid or thick walled thinner item, and offset bush 12 rockers and the 6 pedastool shafts. I make and can sell 18 bushes and a shaft that will do the job. Its a bit exepensive, but might be what your looking for.

The rocker to valve spacing remains the same, but the rocker to pushrod spacing is decreased 12.8%. Its an easy swap, but the bushes are time consuming to fit. The kit is based on the A series 1275 Austin Healy Sprite. Mini Cooper S 970/1071/1275 kit.

I devised this kit so I could use the OHC EFI computer units on Classic Inline and iron heads. The OHC uses aggressive 1.8:1 to 2.0:1 rocker ratios, and this kit allows you to use a more modern cam profile for much more performance. Its better to use them with 1.65:1 roller rockers, and get 1.86:1 if your greedy!

 

[roghax85]

Yes, the rocker arms aren't cheap, but well made. I think the cheapest option is trying to fins used ones somewhere, but that may be few and far between. But luckily, if it isn't a reground cam, the stock rockers will work fine for you, just less lift.

Welcome to the site as well.

Thanks.

do you have video about your engine on youtube or another site?

I love the 6 inline.

I am from honduras, and all Central America the most people just know V8. 289-351.

maybe you can uploar pictures and videos.

Thanks

 

[roghax85]

Its possible to add offset bushes to a down size rocker shaft to increase the rocker ratio of a stock 1.5:1 ratio to 1.69:1

An aftermarket 1.65:1 becomes 1.86:1.

The process is to down size the 20 mm rocker shaft to a solid or thick walled thinner item, and offset bush 12 rockers and the 6 pedastool shafts. I make and can sell 18 bushes and a shaft that will do the job. Its a bit exepensive, but might be what your looking for.

The rocker to valve spacing remains the same, but the rocker to pushrod spacing is decreased 12.8%. Its an easy swap, but the bushes are time consuming to fit. The kit is based on the A series 1275 Austin Healy Sprite. Mini Cooper S 970/1071/1275 kit.

I devised this kit so I could use the OHC EFI computer units on Classic Inline and iron heads. The OHC uses aggressive 1.8:1 to 2.0:1 rocker ratios, and this kit allows you to use a more modern cam profile for much more performance. Its better to use them with 1.65:1 roller rockers, and get 1.86:1 if your greedy!

Hello, thanks

but exacly what I need to do?

because I dont understand exacly what to do about the rockers.

I am outside from USA, but I can part on USA. I am from honduras.

do you have any video about a 200cid stock head en a T5 with a cam 260?

Thanks againg.

 

[xctasy]

Hello, thanks

but exacly what I need to do?

because I dont understand exacly what to do about the rockers.

I am outside from USA, but I can part on USA. I am from honduras.

do you have any video about a 200cid stock head en a T5 with a cam 260?

Thanks againg.

Cam and valve gear are fine.

Stick with 1.5:1 rockers, that Summit cam should work real nice. The carb your using is the standard 2-bbl carb used on 3294 cc Holden Commodores with similar valve sizes from 1980 to 1985. 17.4 to 17.9 second 1/4 mile, 111 to 121 hp, and optional 5 speed gearbox with 3.36 or 3.08:1 diff with later cars. Great gearing, nice carburation, good cam and nice 1205 kilo/2650 pound car. Electronic ignition had an EST spark timing set up, which you can pinch from some GM cars too.

Meantime, good fortune with the cam swap.