Thread: I need help

Tweet

Originally Posted by pat mccarthy

a 555/565 would work good but you need good heads

ok what about the camshaft?

Originally Posted by camaro76_454

ok what about the camshaft?

street / strip strip only with Nos???? how much gear how much stall and if you drive it on the street where do you want to be at for rpms how much Cr do want to run race fuel or 10 to1 pump fuel hyd roller cam engine ???? i do see you are saying street ?strip but do you want it just to drive it rarely on the street and about 80% of the time at the track? why i said the 555 or the 565 is they will not cost any more then a 540/548 the 565 is the way i would go and if you want more we have used the 4.375 crank in the short deck 9.800 block to get a 580 the pistons would be customs or i may have a set used . i do have a tall deck 571 short end i would sell it a fair price or a 598. i will be getting some 9.800 blocks soon that can go to 4.600 bore that may need some work and they would be fixed ready to go. i have a machine shop so i can and do alot of big blocks

Originally Posted by pat mccarthy

street / strip strip only with Nos???? how much gear how much stall and if you drive it on the street where do you want to be at for rpms how much Cr do want to run race fuel or 10 to1 pump fuel hyd roller cam engine ???? i do see you are saying street ?strip but do you want it just to drive it rarely on the street and about 80% of the time at the track? why i said the 555 or the 565 is they will not cost any more then a 540/548 the 565 is the way i would go and if you want more we have used the 4.375 crank in the short deck 9.800 block to get a 580 the pistons would be customs or i may have a set used . i do have a tall deck 571 short end i would sell it a fair price or a 598. i will be getting some 9.800 blocks soon that can go to 4.600 bore that may need some work and they would be fixed ready to go. i have a machine shop so i can and do alot of big blocks

yea i will use nos but not all the time ( only at the track) coz 65% of my time at the track and i dont have a tranny yet and the rear end is a 9" with 4.11 ratio. the PRM range about 2500 -6800 RPM Hyd. Roller and 11 to 1 if i can .
what im looking for is a powerful engine that makes more than 650 horses without NOS and if the tall deck is the way to go i dont mind, i can get a 572ci from World Products coz im thinking of getting one of their blocks or anywhere else . So what u think?

Originally Posted by camaro76_454

yea i will use nos but not all the time ( only at the track) coz 65% of my time at the track and i dont have a tranny yet and the rear end is a 9" with 4.11 ratio. the PRM range about 2500 -6800 RPM Hyd. Roller and 11 to 1 if i can .
what im looking for is a powerful engine that makes more than 650 horses without NOS and if the tall deck is the way to go i dont mind, i can get a 572ci from World Products coz im thinking of getting one of their blocks or anywhere else . So what u think?

On any of the low deck BBC that run on pump gas I would try to keep the port volume at 325 cc's or less to keep some of your port velocity.
If you are going to go low deck build a 565.
If you are going to run a 10.20 block build a 598.
The 632 will cost you some more money to build.
The biggest problem problem with the 598/632 is if you run a 24* head you will have to look at some good heads.
On the 598's in street car's we have run the Brodix BB-2 Xtra's that have been CNC'D with really good luck.
I would not run a hyd. roller cam in a 598 I would run a mech. roller.
The hyd. really become to mild in a big cube engine.
In a 565 with the 11. to 1 comp. ratio I would look at some of the largest hyd. cam's out there.
Keep in mind that the power bands are based on a 454 and not a 565.
I have used Crane part number 139661 in a 565.
The specs. are .632/.632 duration at .050 is 256/264 the cam is cut on a 114 l/s.
The heads are the 325 cc Dart's with some port work done to them.
The intake is a Victor with a 1 inch spacer and a flowed 1050 Dom.
This engine with a 250 shot of N20 works great.