[bcubed]

hello, once again im asking advice on pro streeting my truck, Ok, i want to find a 540 block preferarably a shortblock, and build it to its maximum potential for adding a huge blower ....how big ya ask....a BDS 14-71. In another post i asked about converting my auto tranny shifter from the column to the floor....but would it be a better idea if i just went the route of a Muncie M-22 4 spd manual. or a richmond 6 spd. manual...

Unless you build the engine yourself you are gonna have to change out the pistons .. you could get a 502 crate motor and get some blower pistons and have them installed ... Big superchargers need low compression bottom ends.

 

[bcubed]

yeah you gotta run like under 8:1 dont you?

something like that, you certainly cant run a stock crate motor as they come with 9:1 and more.

 

[BadAss83C10]

i was gonna run 7:1 pistons on it

 

[fullthrottledan]

lots of boost. u should be fine with 8.1 comp, with ALL forged bottom end. if your prostreeting your truck, i would consider a 2 speed powerglide transmission with a transbrake. it will hold lots of power while being extremely consistant at the track. plus you can stay in first gear around town..just my .02

 

[BadAss83C10]

so your saying stick with an auto. and get a 2 spd....whats it run for gears internally

 

[fullthrottledan]

hhmmm, not sure, ill try to find out for you

 

[fullthrottledan]

talked to TCI and they said for their ratios, they go by your stall, and rear end ratios, but the ones they use are
low gear, 1.76, 1.82, 1.89, 1.96, 2.03, 2.11, and for high gear they are all direct drive, or 1:1 ratio

 

[BadAss83C10]

ok cool man

 

[BadAss83C10]

i was thinkin........what about a supercharged 454 instead of the other 2 blocks...