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Junior Member
Joined: May 2006
Posts: 88
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From: Minocqua, WI
Car: 1989 Camaro RS
Engine: TBI 350 - Approx 300hp
Transmission: 700R4 (Soon to be Built)
Axle/Gears: 3.73's & Eaton Posi
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Right now i put a 350 in place of the tired 305 in my camaro and i have been doing some research, i want to know what you engine masters think of the idea of replacing the standard 3.480 stroke crank with a 3.750" crank in my 350 without boreing it out. this should give me 3.77ci. (4.000 bore and 3.750" stroke) do you think i am stupid? or might it be worth it. A cast steel crank from eagle is like $200. I could nock this whole project out in a weekend. And if i do it i can use the regular 5.7" rods correct?
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Joined: Sep 2006
Posts: 184
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From: JSS Soto, Tallil IRAQ
Car: 87 IROC-Z28
Engine: 414ci Twin Turbo
Transmission: T56
Axle/Gears: Ford 9"
You would also need pistons.
Most stroker pistons come in 0.030 over, but im pretty sure you can find them that are stock bore.
Most stroker pistons come in 0.030 over, but im pretty sure you can find them that are stock bore.
Thread Starter
Junior Member
Joined: May 2006
Posts: 88
Likes: 0
From: Minocqua, WI
Car: 1989 Camaro RS
Engine: TBI 350 - Approx 300hp
Transmission: 700R4 (Soon to be Built)
Axle/Gears: 3.73's & Eaton Posi
The 350 engine i have has only 3 thousand miles on it, so my basic plan was to just replace the crank and keep those same bearings, or would you recommend new bearing (main and rod)? And then just bolt up those same rods and pisons. I can use those same regular 5.7" rods correct?
Member
Joined: Aug 2006
Posts: 229
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From: Doghouse
Car: Pro Stadium Tough Truck
Engine: Buick V6 272 cu in
Transmission: TH350
Axle/Gears: Broken most of the time
At least one part in the equation needs to be shorter. You can't just put a larger stroke on it or the pistons will SLAM into the head. That's why the recommendation was to change the pistons and keep the same rods. Stroker pistons will have a shorter distance between the pin and the top of the piston. This will compensate for the larger stroke on the crank.
Yes, on the new bearings. I recomend you use new bearings any time new (different) parts are put together.
Yes, on the new bearings. I recomend you use new bearings any time new (different) parts are put together.
Supreme Member
Joined: Aug 2001
Posts: 1,770
Likes: 1
From: Pacific Northwest
Car: '85 IROC
Engine: LB9
Transmission: 700 R4
It's called a stroker.
A lot of guys do it.
Yes it's worth it.
It would take a miracle to do it in a weekend.
Might as well just get a complete stroker kit, balanced and all.
A lot of guys do it.
Yes it's worth it.
It would take a miracle to do it in a weekend.
Might as well just get a complete stroker kit, balanced and all.
Joined: Jan 2004
Posts: 1,761
Likes: 4
From: The "D"
Car: A Portly 85 Z28
Engine: 4.530 X 4.250 BBC
Transmission: under rated for this application
Axle/Gears: also under rated
Right now i put a 350 in place of the tired 305 in my camaro and i have been doing some research, i want to know what you engine masters think of the idea of replacing the standard 3.480 stroke crank with a 3.750" crank in my 350 without boreing it out. this should give me 3.77ci. (4.000 bore and 3.750" stroke) do you think i am stupid? or might it be worth it. A cast steel crank from eagle is like $200. I could nock this whole project out in a weekend. And if i do it i can use the regular 5.7" rods correct?
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