302 Lt1
#1
302 Lt1
Has anyone thought about using the rotating assembly (crank and rods) from an L99 (4.3L V8 from a Caprice) to build a 302CI LT1?
What do you guys think of the idea?
I'm swapping an LT1 into a Datsun 240Z and intend to Auto-X and road race it. I won't need as much low end torque in such a light car and could use the REV capability the shorter stroke would provide. I know the valve train is the weak point and I would probably end up spending alot more money upgrading it than the bottom end but would my idea even work?
As for valve train I'm thinking I'd use solid lifters with heavy duty springs to avoid float. I'd be shooting for a red-line in the 7500-8000 RPM range.
ZCarGuy
What do you guys think of the idea?
I'm swapping an LT1 into a Datsun 240Z and intend to Auto-X and road race it. I won't need as much low end torque in such a light car and could use the REV capability the shorter stroke would provide. I know the valve train is the weak point and I would probably end up spending alot more money upgrading it than the bottom end but would my idea even work?
As for valve train I'm thinking I'd use solid lifters with heavy duty springs to avoid float. I'd be shooting for a red-line in the 7500-8000 RPM range.
ZCarGuy
#3
TECH Senior Member
That's an awesome idea. I've seen a concept from GM with a 302 LS1, but never seen or heard about any destroked LT1s or LS1s besides that. I bet it'd be fun as hell revvin an LT1 that high.
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Originally Posted by zcarguy
Has anyone thought about using the rotating assembly (crank and rods) from an L99 (4.3L V8 from a Caprice) to build a 302CI LT1?
What do you guys think of the idea?
...I'd be shooting for a red-line in the 7500-8000 RPM range.
What do you guys think of the idea?
...I'd be shooting for a red-line in the 7500-8000 RPM range.
Steve...
#9
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Originally Posted by Aries
L99 = high revs.
My old motor was an L99 and reved 7k+ with ease
My old motor was an L99 and reved 7k+ with ease
The inability of the factory pcm to rev beyond 7000rpms is the biggest hurdle I see to trying this project, personally I would rather keep a 350 and not have to rev beyond the pcms limits and avoid the aftermarket engine managment costs.
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I know this thread is a bit old, but I came across the 302 LS1 enisguy was referring to. Thought you guys would like to check it out.
http://www.zlx.com/camaro/302c.htm
http://www.zlx.com/camaro/302c.htm
#12
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I had an L99 in my Camaro for a while. I got it to run 7.8's in the eigth shifting at 7200 rpm. It had a mild cam (.413/.430 lift), stock heads, intake, throttle body, factory pistons, and factory rods. That motor was a lot of fun and has a ton of potential. It's a shame that the IHRA removed fuel injection from Stock GT.
Daren
Daren