440 source hold up to Boost?

Posted By: Haibach Boys

440 source hold up to Boost? - 01/17/13 02:28 AM

how well does a 440 source crank, rods hold up in the blown world? And/or is anyone using there components in a blown application? looking at their 400/470 crank and rods in a Hampton 671 topped 400/470 stroker, and to get the 8:1 compression run a Trw Forged piston, all said it should be around 10lbs of boost. also for the gentelman/ladies running a blown application, what type of ignition are you running?

Posted By: Clanton

Re: 440 source hold up to Boost? - 01/17/13 03:00 AM

I have a 3.75 stroke 446[.030] with Eagle rods,wiseco pistons but I had the crank gone over by Moldex.900HP and counting.

Posted By: Haibach Boys

Re: 440 source hold up to Boost? - 01/17/13 03:21 AM

Wow thats alota Horse. are you using a 6 or 871? im building mine for street use and to be drivin alot, some say go bigger 871 and spin it slower. on that im undecided my car friends around here don't dable with blowers, to me it makes sence, low Compression, very tame cam, and dont need a big converter or crazy gears.

Posted By: RoadSkinner

Re: 440 source hold up to Boost? - 01/17/13 03:40 AM

im building a 528 with a procharger , ive got 440 source parts too ....well find out ...im more worried about the stock block holding 900 HP than the crank n rods .....

Posted By: Clanton

Re: 440 source hold up to Boost? - 01/17/13 05:08 AM

Quote:

Wow thats alota Horse. are you using a 6 or 871? im building mine for street use and to be drivin alot, some say go bigger 871 and spin it slower. on that im undecided my car friends around here don't dable with blowers, to me it makes sence, low Compression, very tame cam, and dont need a big converter or crazy gears.

an 8/71 at 3%OD would suit your needs.

Posted By: Haibach Boys

Re: 440 source hold up to Boost? - 01/17/13 01:21 PM

Quote:

Quote:

Wow thats alota Horse. are you using a 6 or 871? im building mine for street use and to be drivin alot, some say go bigger 871 and spin it slower. on that im undecided my car friends around here don't dable with blowers, to me it makes sence, low Compression, very tame cam, and dont need a big converter or crazy gears.

an 8/71 at 3%OD would suit your needs.

With the 871 on the street, at 3%OD, it will still run cool and not have tremendous over heating issues?...obviously with the proper cooling system too.

Posted By: joshking440

Re: 440 source hold up to Boost? - 01/17/13 01:26 PM

Im pretty sure an 871 13% percent overdriven with a street blower is safe.

Posted By: Mr.Yuck

Re: 440 source hold up to Boost? - 01/17/13 02:22 PM

?? but a stock crank and replacement cast pistons held up to 6 lbs of boost fine. Just remember to turn the fuel pump on!

Posted By: Clanton

Re: 440 source hold up to Boost? - 01/17/13 03:17 PM

Quote:

Quote:

Quote:

Wow thats alota Horse. are you using a 6 or 871? im building mine for street use and to be drivin alot, some say go bigger 871 and spin it slower. on that im undecided my car friends around here don't dable with blowers, to me it makes sence, low Compression, very tame cam, and dont need a big converter or crazy gears.

an 8/71 at 3%OD would suit your needs.

With the 871 on the street, at 3%OD, it will still run cool and not have tremendous over heating issues?...obviously with the proper cooling system too.

I ran at 3%OD for a while with a BDS stage 2 with no overheating problems and if you have some it is likely to be timing,fuel issues.