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408c stroker cam advice
#1
Hi

Im planing to stroke my 351c. 3.5 gears, 4r70w tranny(2300 stall converter) , 2v CHI Heads , Howard Roller rockers. What Roller cam should I choose ? 
Any suggestion ? Im thinking 520-530 hp and great tq should not be impossible with the heads, that flows 300 cfm.

Regards Rob

For knowing your limit you have to pass it thumb
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#2
I just dyno’d 513hp on Friday with 381 ci Cleveland and .625 inch custom hydraulic cam Speced out by Brent Lykin at Lykin Motorsports.

With heavily ported 4v heads! And SVO Torker style intake 10.3/1 compression, and 600cfm Holley.



He can have a custom billet Comp cam to your door in about 10 days.

His number is 502-759-1431
He will ask you about 100questions so have all your facts ready.





Sent from my iPhone using Tapatalk
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#3
(09-18-2019, 08:06 AM)mikeyhunts Wrote: I just dyno’d 513hp on Friday with 381 ci  Cleveland and .625 inch custom hydraulic cam Speced out by Brent Lykin at Lykin Motorsports.

With heavily  ported 4v heads! And SVO Torker style intake 10.3/1 compression, and 600cfm Holley.



He can have a custom billet Comp cam to your door in about 10 days.

His number is 502-759-1431
He will ask you about 100questions so have all your facts ready.





Sent from my iPhone using Tapatalk
Thats impressive for such a small carb!  Throw an 850 on there and see what it does.

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 044.jpg]

https://youtu.be/SoW1fhaFPzY
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#4
Because of the OD and shallow rear gear, you need to keep the cam profile reasonable. I think George Pence's custom roller cam spec would do the trick.

https://pantera.infopop.cc/topic/393c-st...mended-cam

If you want a flat tappet cam, try this one.

https://pantera.infopop.cc/topic/questio...am-profile


  Reply
#5
(09-18-2019, 08:20 AM)turtle5353 Wrote:
(09-18-2019, 08:06 AM)mikeyhunts Wrote: I just dyno’d 513hp on Friday with 381 ci  Cleveland and .625 inch custom hydraulic cam Speced out by Brent Lykin at Lykin Motorsports.

With heavily  ported 4v heads! And SVO Torker style intake 10.3/1 compression, and 600cfm Holley.



He can have a custom billet Comp cam to your door in about 10 days.

His number is 502-759-1431
He will ask you about 100questions so have all your facts ready.





Sent from my iPhone using Tapatalk
Thats impressive for such a small carb!  Throw an 850 on there and see what it does.


That was just to break in really.
I brought it home and have a super sniper and hyperspark combo for it....
Hopefully it will be the ticket.
I hope to chassis dyno it at some point...[Image: 80275a7e00b99d06b68be19a1ab3cf82.jpg][Image: ecdd5095fe95399dbddb7295b6d22752.jpg]


Sent from my iPhone using Tapatalk
[+] 1 user Likes mikeyhunts's post
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#6
(09-18-2019, 09:25 AM)mikeyhunts Wrote:
(09-18-2019, 08:20 AM)turtle5353 Wrote:
(09-18-2019, 08:06 AM)mikeyhunts Wrote: I just dyno’d 513hp on Friday with 381 ci  Cleveland and .625 inch custom hydraulic cam Speced out by Brent Lykin at Lykin Motorsports.

With heavily  ported 4v heads! And SVO Torker style intake 10.3/1 compression, and 600cfm Holley.



He can have a custom billet Comp cam to your door in about 10 days.

His number is 502-759-1431
He will ask you about 100questions so have all your facts ready.





Sent from my iPhone using Tapatalk
Thats impressive for such a small carb!  Throw an 850 on there and see what it does.


That was just to break in really.
I brought it home and have a super sniper and hyperspark combo for it....
Hopefully it will be the ticket.
I hope to chassis dyno it at some point...


Sent from my iPhone using Tapatalk
thumb VERY NICE!!!

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 044.jpg]

https://youtu.be/SoW1fhaFPzY
  Reply
#7
Robsweden- what is your static compression ratio going to be with your head/piston/gasket choice?
  Reply
#8
Hi All and thanks for your answer.

I have not yet checked out the compression or which pistons to use. Probably Diamond or JE maybe. Heads are 62cc.

Regards Rob

For knowing your limit you have to pass it thumb
  Reply
#9
The spreadsheets in these threads may help you understand the relationships and affects of the variables involved in engine building calculations:

https://www.7173mustangs.com/thread-engi...#pid199290

https://www.7173mustangs.com/thread-cams...#pid278395



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
  Reply
#10
The great question...
What came first? The chicken or the egg?

Same is true with performance engines...
What came first? Static compression ratio or camshaft?

With those small chambers on the CHI heads you will probably have to go with a pretty “spicy” camshaft to lower your dynamic compression ratio to a pump gas friendly number.

Use the tools Don posted. Make a camshaft and static compression ratio choice that suits your desired end result.
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