350 4 bolt

Est ce qu'il ya quelq'un qui peut dire c'est quoi la différence entre un 350 4 bolt et un ordinaire. Et c,est quoi les # de moteur des 4 bolt.

le probleme avec ca c'est que ceux qui en ont a vendre demande toujour plus cher (un 4 bolt)

427copoz a écrit:Salut

le probleme avec ca c'est que ceux qui en ont a vendre demande toujour plus cher (un 4 bolt)

Il demande plus cher parce qu'il reste que les block 4-bolts mains sont des block
Heavy Duty aussi

Salutations

TI-LUC a écrit:

427copoz a écrit:Salut

le probleme avec ca c'est que ceux qui en ont a vendre demande toujour plus cher (un 4 bolt)

Il demande plus cher parce qu'il reste que les block 4-bolts mains sont des block
Heavy Duty aussi

Salutations

Oui d'accord avec toi cela dépend de l'application que l'on veux en faire bien sur !!
blower, nos, 600hp et plus .d'accord
300-450 hp pas sur
Salutation

This is according to several sources, none which completely agree, so I used the lower values from several sources and rounded down to be safe...

2-bolt blocks with OEM main bolts are good to 400hp
2-bolt blocks with ARP main studs are good to 550hp ++High Nickel Blocks to 700hp
4-bolt blocks with OEM main bolts are good to 475hp
4-bolt blocks with ARP main studs are good to 700hp
OEM Blocks with Splayed 4-bolt main studs are good to over 950hp
Bowtie blocks with splayed 4-bolts main studs should handle over 1500+hp!

So essentially, a 2-bolt block w/ studs should handle anything a normally aspirated small block can produce. (assuming everything is in good shape and proper tolerances are closely followed)

Engine RPM plays even a larger factor in determining safe power limits for various block/cap combos.

OEM 2-bolt blocks are good to 6000 rpm.
2-bolts with ARP studs are good to 7000 rpm.
OEM 4-bolt blocks are good to 7200 rpm.
4-bolts with ARP studs are good up to 8500 rpm.
Bowtie or OEM 4-bolt Splayed Studs and cap are good for well over 8500 rpm.

-These figures were aquired from a Super Chevy magazine, Popular Hot Rodding,
and a couple local machine shops

In the Article, it stated that a 250hp engine that was spinning at 7500rpm exerted more loading force
on the Main-caps than a 550hp engine spinning at only 5500 rpm. This means power and RPM must be considered
when selecting how much beef you need in your bottom end.

The HP figures are good references, but the RPM limit of the motor is a better way to choose your block
according to the authors of the article.