Concidering a 391 stroker motor and a few ?'s
Thread Starter
Supreme Member
Joined: Oct 2001
Posts: 1,648
Likes: 0
From: Olean NY USA
Car: 1985 Camaro Z28/1989 Pontiac Trans Am GTA
Engine: 305 tpi/350tpi
Transmission: 700r4
Concidering a 391 stroker motor and a few ?'s
I was thinking of a 391 stroker motor and I just need a few facts of the motor itself. What makes a 391 stroker? Am I looking at any more power out of a 391 vs a 383.
Supreme Member
iTrader: (1)
Joined: Mar 2001
Posts: 1,100
Likes: 0
From: In the corner of my mind!
Car: 1989 TTA #1240
Engine: 3.8 SFI turbo
Transmission: 2004r
Axle/Gears: 3.27
most likely it has an overbored 350 block (.030 or .040)and a specially ground crank of 3.82-3.85.special pistons to compensate for the increased stroke. Depending on the alloy used it could be quite expensive. 383's are plentiful and fairly cheap compared to a 391,396,401,etc.
Member
iTrader: (1)
Joined: Sep 2002
Posts: 148
Likes: 0
Car: 87 Formula
Engine: L98-350
Transmission: 700-R4
Axle/Gears: 3:08 Posi (Disk)
the only crank i know of it the 3.850 stroke but kit come 5.7 or 6 inch rod kits you can get them from speed-o-motive.com
Sammy
Sammy
Senior Member
Joined: Sep 2001
Posts: 968
Likes: 0
From: Montreal\Quebec|Canada
Car: Camaro Z281991 Engine: 5.7L/350 TPI Transmission: TH700R4 ··································· Car: Acura CL 1998
Engine: 3.0L/183
Transmission: 4 spd auto/OD
a 391 has the same crank as a 383, but the rod jornals are machined to accepte 327 rods, so u end up with a longer arm.
They say it revs like a smaller engine, with the torque of a 383.
sounds interesting to me !
They say it revs like a smaller engine, with the torque of a 383.
sounds interesting to me !
Thread
Thread Starter
Forum
Replies
Last Post
mhatfield 14
Tech / General Engine
5
Oct 24, 2015 07:48 AM
Mickeyruder
Engine/Drivetrain/Suspension Parts for Sale
3
Sep 2, 2015 02:45 PM
