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-   -   thumpr cam (http://www.hotrodders.com/forum/thumpr-cam-216414.html)

64 fairlane 500 03-07-2012 07:51 PM

camshaft suggestions
 
he guys i just built a 390 it has stock bore with speed pro pistons iron ford heads ported an it has cobra jet valves with stock non. adjustable rockers and i have a rear end ratio of 3.50 a standard tranny i want it to be a very fast street car that i can take to the strip every once in a while any input woulb be great. thanks!!!!!! :( :mad: :embarrass :welcome: :) ;) :boxing:

DoubleVision 03-07-2012 07:55 PM

Need more info. What intake? What carb? Headers? Exhaust? Compression ratio? What ignition?

64 fairlane 500 03-07-2012 08:24 PM

reply
 
i think i will get a 750 edelbrock a performer rpm intake and the compr. ratio is like 10.1 or somthin i am not sure i got the speed pro pistons of my machine shop buddy. hope this helps thanks

64 fairlane 500 03-07-2012 08:25 PM

ow ya the ignition is mallory with a msd coil and hedman headers thanks!

JeffB 03-08-2012 01:59 AM

With what you have this will give you "good bang for the buck" http://www.summitracing.com/parts/HRS-CL250031-12/ I would advise you to get new matching valve springs.The lift is about max before you would require adjustable rockers.Before you plunk down the buck for that Edelbrock RPM you might want to do some research on Jay Brown's dyno test on FE intakes and check ebay for an Edelbrock Streetmaster you can learn a lot here http://www.network54.com/Forum/74182/search

64 fairlane 500 03-08-2012 09:39 AM

thank you does a bigger cam really gain that much horsepower? i think i will goe with something like that. and how much spring do i need?

64 fairlane 500 03-08-2012 04:49 PM

thanks
 
thanks i am not sure how to use a cam degree wheel i have one but it kinda confuses me.

painted jester 03-08-2012 10:08 PM

Quote:

Originally Posted by 64 fairlane 500
thanks i am not sure how to use a cam degree wheel i have one but it kinda confuses me.

64: Listen to fire bird hes telling you exactly what I told you in the P.M. yesterday (hes dead on) Lifter lash is set at full collapse and adjusted with lash caps or different length push rods there are no short cuts!!! Tell these guys your age!!! and experience! it will help them help you! The rpm air gap is not a good choice for F.E.side oilers the carbs. have a tendency to frost up in colder climates a good high rise for the RPM range of the engine is a better choice for the street in my opinion. If your running it at the track there are much better intakes you can run for power! You also had a 390 crank put into a 352 block you told me that yesterday! Tell these guys just exactly what your machinist did!! :thumbup:

Ill be off here for a few days!!, But I can tell fire birds is one guy to talk to By the little he said!! He knows F.E. valve train geometry (listen to him) : Gotta go :thumbup: jester

JeffB 03-09-2012 01:33 AM

352? Maybe Not!
 
Since this was brought up you should click on this: http://www.mre-books.com/interchange/interchange11.html And to learn more about FE's you should buy the book.As per this discussion http://www.network54.com/Forum/74182...borderline____ Comp Cams recommended a max of .300" lift with non-adjustable rockers multiply that times the 1.76 rocker arm ratio and you get .528" lift.You must keep in mind that FE Fords produce a ton of torque you don't need to twist them up like a SBC to make power so the cam and intake I recommended will give you low end and strong mid range power,your biggest issue at the strip will be hooking up that torque to the pavement.

64 fairlane 500 03-09-2012 09:04 AM

ok thanks guys so since my block was bored .050 over with a 390 crank is it a 390? i looked into those street master intakes and i found one on ebay. and do you guys think i should go with my 750 vac. adv. or a 650 cfm carb? i think i will go with that comp cam. thank you

64 fairlane 500 03-09-2012 09:11 AM

hey f-bird when you said 750dp do you mean double pumper? thanks

JeffB 03-09-2012 07:13 PM

Going back to your first original post you stated this is a "Street car" and the Strip once in a while,rather than tearing into a used Holley double pumper you could go this route http://www.summitracing.com/parts/SUM-M08750VS/ Since you are bent on buying a Comp Cam better read this:http://www.crankshaftcoalition.com/w...ips_and_tricks

64 fairlane 500 03-09-2012 07:42 PM

thanks this has helped me alot. also do you think my borg and warner t-18 will last?

64 fairlane 500 03-09-2012 07:43 PM

oh maybe i should have said thats my tranny

painted jester 03-09-2012 07:52 PM

Quote:

Originally Posted by 64 fairlane 500
oh maybe i should have said thats my tranny




T- 18s a heavy duty truck trans are you building a 3/4 or 1 ton truck or did you mean T-10 :confused: I thought you were building a car?

Chris


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