Posted By: robnbird
B 400 solid roller - 07/31/14 03:25 AM
I would like you opinion on a roller . or what is your set up with a 400 ? I have a 68 RR 3200lb Dana 60 4.88 , 4 link , coil over front . 727 5000 stall ...
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those are some good results Greg and thanks . I was thinking of about 650 lift and about 290ish duration . MP has one that is 300 duration and 625 , and another that is like 297 and 660 . thanks again
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those are some good results Greg and thanks . I was thinking of about 650 lift and about 290ish duration . MP has one that is 300 duration and 625 , and another that is like 297 and 660 . thanks again
For your goals of 6.0 in the 1/8 499 ci and 3200# thats Way more duration then you Want or need. You could get it done with a roller around 268 to 275 / .650 lift. 290 to 297 In. no need.
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those are some good results Greg and thanks . I was thinking of about 650 lift and about 290ish duration . MP has one that is 300 duration and 625 , and another that is like 297 and 660 . thanks again
For your goals of 6.0 in the 1/8 499 ci and 3200# thats Way more duration then you Want or need. You could get it done with a roller around 268 to 275 / .650 lift. 290 to 297 In. no need.
Are we all talking duration at .050 tappet lift?
Quote:As already mentioned, we need more information on your parts before offering a cam design suggestion Which heads,intake and carb. size, which fuel, intended or desired RPM shift point and so on
I would like you opinion on a roller . or what is your set up with a 400 ? I have a 68 RR 3200lb Dana 60 4.88 , 4 link , coil over front . 727 5000 stall ...
Quote:yes at .050Quote:Quote:
those are some good results Greg and thanks . I was thinking of about 650 lift and about 290ish duration . MP has one that is 300 duration and 625 , and another that is like 297 and 660 . thanks again
For your goals of 6.0 in the 1/8 499 ci and 3200# thats Way more duration then you Want or need. You could get it done with a roller around 268 to 275 / .650 lift. 290 to 297 In. no need.
Are we all talking duration at .050 tappet lift?
Quote:A DH around 9.970 .. compression close to 12.7 is my calculation
I am just now starting on the motor .. I ordered a 4.150 rotating kit with 6.760 rods and 1.120 CH pistons 4.375 bore ... 3200 lb car with 4link , 4.88 coil over front . 727 5000 stall . edelbrock victor max heads .. undecided on a intake and camshaft . So I am all ears
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Greg thanks .. What would your numbers be for a 650 to a 670 lift .
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Thanks Mr P I just got back and I just posted my info . except the carb and probably a 1050 dom to start with .
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Greg thanks .. What would your numbers be for a 650 to a 670 lift .
Quote:what do you think about the last 4 of these comp cams? thanksQuote:
Greg thanks .. What would your numbers be for a 650 to a 670 lift .
I have learned that if you max flow at .650 lift that
you would like about .750 lift on the cam(at the valve)
because your at the .650 lift a much longer time
(you pass the .650 lift point 2 times and all the time
between) for better filling specially at RPM when you
have a shorter time period to fill... also the .750
would be a decent starting point or higher
Quote:Quote:what do you think about the last 4 of these comp cams? thanksQuote:
Greg thanks .. What would your numbers be for a 650 to a 670 lift .
I have learned that if you max flow at .650 lift that
you would like about .750 lift on the cam(at the valve)
because your at the .650 lift a much longer time
(you pass the .650 lift point 2 times and all the time
between) for better filling specially at RPM when you
have a shorter time period to fill... also the .750
would be a decent starting point or higher
Quote:the air flow I have to guess now ,, but from what I have read it possible will be around 320ishQuote:Quote:what do you think about the last 4 of these comp cams? thanksQuote:
Greg thanks .. What would your numbers be for a 650 to a 670 lift .
I have learned that if you max flow at .650 lift that
you would like about .750 lift on the cam(at the valve)
because your at the .650 lift a much longer time
(you pass the .650 lift point 2 times and all the time
between) for better filling specially at RPM when you
have a shorter time period to fill... also the .750
would be a decent starting point or higher
The problem with those shelf cams is if you want the
lift the duration goes up with it... if you knew
the head flow and what rpm you wanted to turn would help
Quote:Quote:the air flow I have to guess now ,, but from what I have read it possible will be around 320ishQuote:Quote:what do you think about the last 4 of these comp cams? thanksQuote:
Greg thanks .. What would your numbers be for a 650 to a 670 lift .
I have learned that if you max flow at .650 lift that
you would like about .750 lift on the cam(at the valve)
because your at the .650 lift a much longer time
(you pass the .650 lift point 2 times and all the time
between) for better filling specially at RPM when you
have a shorter time period to fill... also the .750
would be a decent starting point or higher
The problem with those shelf cams is if you want the
lift the duration goes up with it... if you knew
the head flow and what rpm you wanted to turn would help
Quote:what do you think about the last 4 of these comp cams? thanks
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Quote:Quote:what do you think about the last 4 of these comp cams? thanks
[qu:
Quote:well OK I don't have the heads ported as yet but will before long and then I will post that and get opinions .. thanks for the help ... I have decided to get a indy 400-3 intake . I would like to find a used one some where .Quote:Quote:what do you think about the last 4 of these comp cams? thanks
[qu:
I think they are way to big for your combo.
Bigger isnt always faster.
Quote:Quote:well OK I don't have the heads ported as yet but will before long and then I will post that and get opinions .. thanks for the help ... I have decided to get a indy 400-3 intake . I would like to find a used one some where .Quote:Quote:what do you think about the last 4 of these comp cams? thanks
[qu:
I think they are way to big for your combo.
Bigger isnt always faster.