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Cam for cobrajet

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Post  hk9176251 July 4th 2023, 2:30 pm

I have  a 71 torino  cobra with 429cj 4speed manual  and 3:50
Rear gears  I want more performance  but not ready  for nor need complete  rebuild  at this time the car only has 43000 miles  im wondering  if anyone  could tell me what cam I should  install  to get the most out of the otherwise factory  set up

hk9176251

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Join date : 2012-02-11

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Post  hk9176251 July 4th 2023, 2:32 pm

Pic of my car

Cam for cobrajet  20210811Cam for cobrajet  20210811Cam for cobrajet  20210811Cam for cobrajet  20210811Cam for cobrajet  20210811

hk9176251

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Join date : 2012-02-11

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Post  69F100 July 4th 2023, 5:31 pm

Not sure on a cam but maybe Randy or Lem will chime in but you have a good looking ride
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Post  supervel45 July 4th 2023, 8:14 pm

Below is a 506HP Dynoed camshaft, when used with their heads and intake. It should make good HP with a CJ top end and compression.

Edelbrock Performer RPM. 234/244/108/.556/.581

https://www.ebay.com/itm/125129264203

Same Cam kit a little cheaper.

https://www.ebay.com/itm/285332190390?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D251363%26meid%3D6c8daa61850543ebab590b942d5eb43c%26pid%3D101195%26rk%3D1%26rkt%3D12%26sd%3D125129264203%26itm%3D285332190390%26pmt%3D1%26noa%3D0%26pg%3D4429486%26algv%3DSimplAMLv11WebTrimmedV3MskuWithLambda85KnnRecallV1V4ItemNrtInQueryAndCassiniVisualRankerAndBertRecall%26brand%3DEdelbrock&_trksid=p4429486.c101195.m1851&amdata=cksum%3A2853321903906c8daa61850543ebab590b942d5eb43c%7Cenc%3AAQAIAAABUNaJCFP3eaFlNU%252FMPxRY0TCMczVKEUB5MsBytoCwPnd71M08lfrVO4PuTCchnU42KC4W4fZqxBROE%252BM7tSL%252BgZgL1kWiIUBRsEpydVTA61DhOJDUizwNgM7HKYQEqSaBlKy3pvcoiQfXXUAskmoXKVV66xred9Q%252B13iVwKaxcUGss1n%252BE%252FhEtqKMg34EIOK6jSDIyckkapRgIjN%252FU5qISB2Hm2nPP4I%252FBN6u9p0%252BXbgNfAwiurD6y2Z6igL3GpWSNJulfNMfvmanfsfnV3h6Anz3xMfJT9ONK1ctzp9KLnErK8X4YK20yqc2y7KAdcUXI%252BQ%252Fhv80srwmgGdHBF2vAURSp6ENZcs3uYXRHy%252Bncu39H2RkBPzXOU2e8xlupHQ%252Fml2yBlnPXt7INSkYDchp0%252FSXHjYM8SCjiBUiqUVTE6QnjVwqWnKaMIVhc99162s14A%253D%253D%7Campid%3APL_CLK%7Cclp%3A4429486&epid=179099137

The problem with most of the Big Block Ford heads is around .540"/.550" lift is you have to cut the valve guides so the valve seals don't get crushed.

There are very few BBF shelf cams in stock now.

In my opinion there never were many shelf grinds under or at .540" lift that were of a big improvement over the CJ and SCJ cams, without cutting the Guides. The tighter LSA offered by the cam companies in my opinion was their strong point, especially when many owners were taking compression out of them to run on lower octane pump gas.

As said Randy can grind you a custom cam to get around the lift issue and taylor it to you setup.

Is the engine in the car and running now?

Still Original Q-Jet and Intake?

Headers?

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Post  rmcomprandy July 4th 2023, 9:00 pm

The 429CJ hydraulic cam  C9AZ-6250-C is a pretty good piece.

I personally like the CompCams "Specialty" camshaft 34-244-4 / 268AH-10 for your type requirements.
268/276 @.006" - 222/226@.050" - ,535"/.535" valve lift - 110 separation but, in this day and age, (with the unavailable core issue), you will get whatever is close that you can get.

The Howard's Cam number 240041-12 is only slightly bigger than that and is a really good cam for your type situation, also.

EDIT: I have used both of these cams with good success.
I will never recommend anything which I have not actually used although, there may be other stuff out there like it.


Last edited by rmcomprandy on July 5th 2023, 12:04 pm; edited 1 time in total

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Post  Mark Miller July 4th 2023, 10:37 pm

69F100 wrote:Not sure on a cam but maybe Randy or Lem will chime in but you have a good looking ride

X2!!

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Post  supervel45 July 4th 2023, 10:53 pm

You can get a lot out of the lower lift Stock and Super Stock type cams. The below is a 1970 Torino 429 SCJ at 12.56 in the 1/4. That is why I suggested a custom grind.

https://www.youtube.com/watch?v=s0i3PUtcHm8

Back in the day Erson had some good .545" dual pattern cams. E260520 and E26721. Same cams one had 5 degree's advance cut in. Electric page 140 Actual page 138.

http://www.pbm-erson.com/UserFiles/Documents/Catalogs/Erson-Master-Catalog-2020-web.pdf

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Post  hk9176251 July 5th 2023, 10:23 am

[
Thank you and about intake and carb Theo only thing not factory on the car at this time is protonics electronic ignition replacement for duel points



quote="supervel45"]Below is a 506HP Dynoed camshaft, when used with their heads and intake. It should make good HP with a CJ top end and compression.

Edelbrock Performer RPM. 234/244/108/.556/.581

https://www.ebay.com/itm/125129264203

Same Cam kit a little cheaper.

https://www.ebay.com/itm/285332190390?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D251363%26meid%3D6c8daa61850543ebab590b942d5eb43c%26pid%3D101195%26rk%3D1%26rkt%3D12%26sd%3D125129264203%26itm%3D285332190390%26pmt%3D1%26noa%3D0%26pg%3D4429486%26algv%3DSimplAMLv11WebTrimmedV3MskuWithLambda85KnnRecallV1V4ItemNrtInQueryAndCassiniVisualRankerAndBertRecall%26brand%3DEdelbrock&_trksid=p4429486.c101195.m1851&amdata=cksum%3A2853321903906c8daa61850543ebab590b942d5eb43c%7Cenc%3AAQAIAAABUNaJCFP3eaFlNU%252FMPxRY0TCMczVKEUB5MsBytoCwPnd71M08lfrVO4PuTCchnU42KC4W4fZqxBROE%252BM7tSL%252BgZgL1kWiIUBRsEpydVTA61DhOJDUizwNgM7HKYQEqSaBlKy3pvcoiQfXXUAskmoXKVV66xred9Q%252B13iVwKaxcUGss1n%252BE%252FhEtqKMg34EIOK6jSDIyckkapRgIjN%252FU5qISB2Hm2nPP4I%252FBN6u9p0%252BXbgNfAwiurD6y2Z6igL3GpWSNJulfNMfvmanfsfnV3h6Anz3xMfJT9ONK1ctzp9KLnErK8X4YK20yqc2y7KAdcUXI%252BQ%252Fhv80srwmgGdHBF2vAURSp6ENZcs3uYXRHy%252Bncu39H2RkBPzXOU2e8xlupHQ%252Fml2yBlnPXt7INSkYDchp0%252FSXHjYM8SCjiBUiqUVTE6QnjVwqWnKaMIVhc99162s14A%253D%253D%7Campid%3APL_CLK%7Cclp%3A4429486&epid=179099137

The problem with most of the Big Block Ford heads is around .540"/.550" lift is you have to cut the valve guides so the valve seals don't get crushed.

There are very few BBF shelf cams in stock now.

In my opinion there never were many shelf grinds under or at .540" lift that were of a big improvement over the CJ and SCJ cams, without cutting the Guides. The tighter LSA offered by the cam companies in my opinion was their strong point, especially when many owners were taking compression out of them to run on lower octane pump gas.

As said Randy can grind you a custom cam to get around the lift issue and taylor it to you setup.

Is the engine in the car and running now?

Still Original Q-Jet and Intake?

Headers?[/quote]

hk9176251

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Join date : 2012-02-11

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