How Much Hp Can A Stock Block Take
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turbodave231
Moderator
- Joined
- May 24, 2001
Yes, A very few have gone low 9's and even high 8's. Those blocks were extensviely reworked and reinforced (caps, girdles and other black magic). I wouldn't characterize those HP levels as typical for the limit of a 109 block.
IMO, the 109 block can easily handle 500-500 without caps or a girdle.......as long as the engine see no detonation. Add the caps and girdle, forged internals, and the same block should handle 550-650.............again with no detonation.
Detonation will destroy a 350 HP engine.
IMO, the 109 block can easily handle 500-500 without caps or a girdle.......as long as the engine see no detonation. Add the caps and girdle, forged internals, and the same block should handle 550-650.............again with no detonation.
Detonation will destroy a 350 HP engine.
turbodave231
Moderator
- Joined
- May 24, 2001
Correction: I intended to say 500-550 with all stock internals.......duh.
TurboTerry87gn
Member
- Joined
- Mar 3, 2003
Stock crank and rods
I have a 109 with a stock crank and rods with 4 billet caps and a girdle. The motor made 525 rear wheel horsepower @ 21 psi through a TH400 trans, and ran a 6.455 @ 105 in the 1/8 mile @ 24.5 psi. I'm guessing 575-600 at the rear wheels. only mods to the rods were arp rod bolts. Polished crank.
Thats very close to a 9.9999999 sec 1/4 mile!
I have a 109 with a stock crank and rods with 4 billet caps and a girdle. The motor made 525 rear wheel horsepower @ 21 psi through a TH400 trans, and ran a 6.455 @ 105 in the 1/8 mile @ 24.5 psi. I'm guessing 575-600 at the rear wheels. only mods to the rods were arp rod bolts. Polished crank.
Thats very close to a 9.9999999 sec 1/4 mile!
Mines been 6.6@ 105.76 in the 1/8 and 10.35@ 130.99 in the quarter. That was in a 3500# car with me in it. It did 460 rwhp on the dyno. It has a stock block with two center cars, APR studs and piston bolts, stock rods with polished beams, and JE pistons. Next time it comes out I want to put a girdle on it.
TurboTerry87gn
Member
- Joined
- Mar 3, 2003
Got my short block for sale.
1 of 1547:
What's a "Piston Bolt"?
You know it's in the same department as muffler bearings.
Sorry it should say rod bolts. Blonde moment. DailyDrifter
The Slow and the Curious
- Joined
- Dec 5, 2007
We have a local that went 9.68 with billet main caps. ARP main studs and
ARP "piston bolts"
however, at that HP level it's just a matter of time before
I wish people cancer, AIDS, and death............................but NEVER do I wish a blown motor on somebody
- Joined
- Aug 1, 2003
not typical nor would i say go do it but
my build is stock block, crank,rods,pistons,mains and all the bolts
no billet caps ,girdle studs or fancy bolts in the bottom , no fillied jackets
iron heads but they are held with studs
has a few low 10s at near 130 slips , most passes mid 10s 127
as for how long it would last , I can only say what it has done so far
upwards of 300 passes , almost all mid 10s and all off transbrake launching in 1.4x to mid 1.5 range
my build is stock block, crank,rods,pistons,mains and all the bolts
no billet caps ,girdle studs or fancy bolts in the bottom , no fillied jackets
iron heads but they are held with studs
has a few low 10s at near 130 slips , most passes mid 10s 127
as for how long it would last , I can only say what it has done so far
upwards of 300 passes , almost all mid 10s and all off transbrake launching in 1.4x to mid 1.5 range
