combo help
#1
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combo help
Ive got a '70 2boolt 400sbc, bored .030 over with 6.0Scat forged i-beams, Ross 95765 pistons, and a Scat cast crank. total cid is 406. i just got a weiand x-cellerator intake and a lunati solid lifter bracket master II cam. specs are 256/270 @.050 and 500/515 @.050. ive got full length headers and 1.5 roller rockers. now i just need to get some heads that will allow me to spin this puppy to 6300-6500rpm. keep in mind that im on a little bit of a budget. any help would be very appreciated. Thanks!!
#3
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thanks bud, ive looked at those and they seem like a good deal for what you get. also, ive heard that 400's dont like to rev past 6000 and ive even read that you should never rev them past 6000. for some reason i just dont believe that. maybe its true but i just dont think it makes any sense. i would like to get as much rpm out of it as i can to get the most out of the cam. anyone else have any suggestings?
#6
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Originally Posted by wills55
thanks bud, ive looked at those and they seem like a good deal for what you get. also, ive heard that 400's dont like to rev past 6000 and ive even read that you should never rev them past 6000. for some reason i just dont believe that. maybe its true but i just dont think it makes any sense. i would like to get as much rpm out of it as i can to get the most out of the cam. anyone else have any suggestings?
#7
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You definetly need to upgrade your intake too, that whimpy little excellerator is way to small for any serious power on a goodbreathing 406.
A victor jr would be more suited to your needs, or a newer team G.
The above mentioned sportsman II heads are really good pieces out of the box and are very affordable verses pricey aluminum heads and they would be complimented by the intakes I reccomended. Now as far a 400 not liking to rev past 6000????? It all depends on your bottom end being built right and the cam, intake and heads.
I've seen many SBC'S bigger than 406's wound up in the 7000 to 8000rpm range.
Goodluck, Charles
A victor jr would be more suited to your needs, or a newer team G.
The above mentioned sportsman II heads are really good pieces out of the box and are very affordable verses pricey aluminum heads and they would be complimented by the intakes I reccomended. Now as far a 400 not liking to rev past 6000????? It all depends on your bottom end being built right and the cam, intake and heads.
I've seen many SBC'S bigger than 406's wound up in the 7000 to 8000rpm range.
Goodluck, Charles
#8
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the engine in my sig (420ci sbc) can get up to 8000rpm... circle track cam runs out over 8k. Its not in the car yet so Im not sure how the cam feels but Im probably going to be shifting a little over 7k. nothing wrong with a big ci sbc for rpms, just be sure its built for the cam you choose
#9
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Originally Posted by cepx111
You definetly need to upgrade your intake too, that whimpy little excellerator is way to small for any serious power on a goodbreathing 406.